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Mini DS203 OSC Manual Copyright reserved by elechouse

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Intro

DS203 V2.6 is a pocket size 4 channel digital Oscilloscope for common electronic engineering tasks. It's based on ARM cortex M3 (STM32F103VCT6) 32 bits platform, providing 72MS/s sampling rate with integrated FPGA and high speed ADC. Internal 2MB USB disk could be used to store waveform, user application and upgrade firmware. Due to the palm size and handy performance, it fits in-field diagnosis, quick measurement, hobbyist projects and wherever convenience matters. Scheme and source files are also open for re-innovating. Features

      

Portable and lightweight Color display Waveform storage and playback Two 72MS/s analog channels, plus two digital channels Firmware upgradable 4 programmable space for user application program Open Source

Specification Display

Full Color 3" TFT LCD 400 X 240

Input channel

Analog: CH(A)\CH(B) Digital: CH(C)\CH(D)

Max sample rate

72MS/s, 8bit

Sample memory depth

4096 Points for each channel

Vertical Scale

20mV-10V/div(xl probe)

Vertical resolution

8 bit

Horizontal sensitivity

0.1uS/Div ~ lS/Div

Horizontal position

Adjustable

Input coupling

AC/DC

Input impedance

>800KΩ

Max input voltage

80Vpp(xl probe)

Trigger type

Auto, Normal, Single, SCAN, None

Trigger source

CH1/CH2/EXT

Signal generator

Sine/Triangle/Saw/Square,lOHz-20K Hz

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Storage

Internal 2MB USB disk, BM P, DAT file

Auto measure

Max, Min, Vbt, FPS, Vpp, Vdc, RMS

Sampling mode

Real time

Dimension

98 * 60 * 14.5 (mm)

Weight

80g (without battery)

Accessories within Pack

2 mcx oscilloscope probe/battery

Basic Operation Install the battery

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1. Push the back cover toward the Mini USB port direction. 2. Lift the back cover 3. Install the battery Operation Overview

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Buttons

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There are 2 navigators and 4 buttons on DS203 Navigator A The Navigator A is used to select/change the submenu of menu. Action "Press" Navigate in the sub-menus, While Action "Pull/ Push" changes the setting of a sub-menu (ref. menu). For example, when selecting the menu: CHA Control, with Navigator B (ref. Navigator B), Action "Pull/ Push" of Navigator A changes the setting of sub-menu1, from "CH (A)"to "HIDE". While action "Press" changes selected sub-menu, making the blink area jump to next item: DC (or AC), Still, Action "Pull/ Push" changes the setting of this sub-menu. Action "Press" of Navigator A changes the submenu of CHA Control menu as follows: Show mode (CH (A)/HIDE) -> Couple mode (AC/DC-) -> Vol sensitivity (50mV-l0V) -> YPOS Select mode. Navigator B Navigator B is used to navigate in the main menu (ref. table l), Action "Press" of Navigator B changes menus from menu Group1 to Group2 (ref. menu) and vice versa; While action “Pull/Push" changes the main menu within a Group. Run/Hold The Run/Hold is used to control working state of DS203: Working or Pause Calibrate A standard voltmeter and an adjustable voltage source is needed for calibrating the Quad. In working state, when the menu CHA Control or CHB Control is selected, pressing the Calibrate button making the Quad enter the calibration status: 1. Connect the standard voltmeter and DS203 in parallel. Input the voltage from the adjustable voltage source to both voltmeter and DS203. 2. There will some prompt in the first column, eg. "Please connect CH_A input to GND". Input voltage to DS203 as the prompt. Adjust the value to make it the same as the standard voltmeter, with Navigator A. And select different range and calibrate item with action "Press" and "Pull/Push" of Navigator B.

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3. When cursor is at the bottom, select the exit mode with Navigator A, and press the calibrate button to exit the calibration status. More calibration information will be supplied in latter pages. Preset This button is used to save your setting when using the DS203. With this function, you don't need to configure your DS203 every time you power it. For example, configure the signal generator as Square, 10kHz, and then press the Preset Button. You would find the signal generator the same as your last configuration. Save Wave Connect DS203 to PC via USB cable. Switch on the device, and then you will find it in your PC.

In order to save the wave in DS203, Template of .bmp files or .dat files must be stored into DS203 first. You can download the template: http://www.elechouse.com /elechouse/images/product/DS203/save_wave_tem.rar

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Navigate to storage menu with Navigator B. While you get Save File option, you can select the action (Save File/Load File) you want to do via Navigator A. Press Navigator A to select the file name and file format (.dat or .bmp), then press the "Save Wave" button, the wave in DS203 will be stored as the format you set.

Menu

The main menu of DS203 can be defined as 2 groups: Group 1: Menus to define user's action. Include: 8

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Menu Name:

Optional State:

CHA Control

CH(A)/HIDE

CHB Control

CH(B)/HIDE

CHC Control

CH(C)/HIDE

CHD Control

CH(D) / (A+B) / (A-B) / (C&D) / (CID) / (FILE_X)

Sync. Mode

AUTO/NORM/SINGL/NONE/SCAN

Output Mode

SINE /Triang/ Saw / Square

Trigg Mode

Trigg (Note l)

Diff between ref v1 & v2

V

Storage Manu

(Note 2)

Diff between ref T2 &T2 Back Light Control

T B.L

Voice Control

Vol

Note: 1. The color in DSO Quod v2.6 represents each channel (blue for CH(A). yellow for CH(B). purple for CH(C) and cyan for CH(D)) 2. Storage Menu is at the bottom of DS203. It shows only when selected Group2: Menus to show user the measure result

These menus could be a quick tool to check the signal characteristics and can be changed with Navigator A as users want (Ref. Navigator A). These characteristics include: Max, Min, Vbt, FPS, Vpp, Vdc, RMS. Menu Operation

CHA/CHB/CHC/CHD Control There are 4 input channels in DS203. CHA and CHB are analog inputs while the CHC and CHD are digital inputs (Table 2). Select CHA or CHB with Navigator B, Both CHA and CHB have submenus as 9

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Submenu

Function

Show mode

Show or hide related input channel

Couple mode

AC couple or DC couple

Vol sensitivity

Vol sensitivity adjust(50mV-l0V)

YPOS adjust mode

YPOS adjust

Navigate the submenus with action "press" of Navigator A, and adjust the setting with action "Pull/Push". Digital input channel CHC is a digital input channel, it only has two submenus: Show mode and YPOS adjust Mode.Digital Digital input channel CHD has something different. It can be set to math inputs (Table2). It has sub-menus as Submenu

Function

Show mode

HIDE / CH(D) / (A+B) / (A-B) / (C&D) / (C|D) / ( FILE_X)

YPOS adjust mode

YPos adjust

The results of A+B, A-B, C&D and C|D, can be set as the inputs of channel D. With this function, it is convenient for the user to observe and analyze the signal of each channel. Besides, the FILE_X can be used as the input when recalling data from .DAT file (Ref. store and Recall). Syn. Mode AUTO: Always refresh display, synchronize when triggered. Norm: Display synchronized waveform when triggered, blank if not triggering Single: Display triggered waveform and hold, blank before triggering. Scan: Repeatedly sweep waveform from screen left to right. None: Refresh unsynchronized waveform ignoring triggering. Mode

Trigger

Display

Synchronization

Application

AUTO

Yes

Always

Yes

General use

Norm

Yes

Triggered

Yes

Periodic signals

SING

Yes

Triggered

Auto-hold

Random pulse

Scan

No

Always

No

Monitoring

None

No

Always

No

Unsynchronized

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This menu also has a submenu of Horizontal sensitivity, From O.1s/div t0 1s/div. And a submenu of XPOS, Each "div" means a grid unit of the screen. You can view the full sampling buffer of a channel with the action "Push/Pull" of Navigator A. Output Mode There are two signal generator sources in the DS203, Digital source and analog source. The digital source outputs duty ratio is adjustable from 1% to 99% square wave, and frequency from 10HZ to 8MHZ. The analog outputs wave forms include: Sine wave, Triangle wave, Saw wave. Frequency form 10HZ to 20KHZ. This menu has a sub-menu as Sub-menu Output wave Frequency

Function Output wave select Set the frequency of output

Trigger Mode There are 8 trigger modes Trigger Mode

Trigger Condition

I

Falling edge of threshold

F

Rising edge of threshold

vt

Voltage lower than threshold

TL TH

 T(Ref. Time Measure) Low level pulse width longer than  T High level pulse width shorter than  T High level pulse width longer than  T

Navigate to the THRESHOL to adjust the Trigger threshold. Also, the different color of this menu represents which channel is the current trigger source, Please refer to Note 1. Voltage Measure The  V menu shows user the D-value of V1 and V2. It have submenu of V1 and V2. Adjust V1 line and V2 line, with Navigator A, and the  V will show you the D-value between them. Store and Recall 11

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Waveform could be saved to the internal 2MB USB disk, with.bmp or .dat files, and then recalled as the user want. Save waveform as .bmp: 1. Copy the Filexxx.BM P to the 2M USB disk, rename the xxx as 000, 001, 002_ 2. Navigate to the save menu, select "Save file", "xxx (the one you select to use)" and ".BMP" 3. Push button "Save wave" (The forth button on DS203) 4. Reset the DS203, you will see the saved BMP in your USB disk. Save and recall .DAT 1.

Copy the Filexxx. DAT to the 2M USB disk, rename the xxx as 000, 001, 002……

2. Navigate to the save menu, select "Save file", "xxx(the one you select to use)" and ".dat" 3. Press button "Save wave" to store the data into .dat file. 4. In order to recall the data you stored in the USB disk, first navigate to the save menu, select the "load file""xxx(the one you want to recall)"and ".dat", and then press the button "Save Wave". 5. Navigate to the CHD, select the show mode as File_x(the data in which channel you stored ), and, you can get the recalled waveform. Time Measure The  T menu shows user the D-value of T1 and T2. It have submenu of T1 and T2. Adjust T1 line and T2 line, with Navigator A and the  T will show you the D-value between them. B.L& Vol B.L (backlight) and Vol can also be adjusted by Navigator A, Reducing the B.L and Vol make benefits to your battery duration. Measurement

These menus in menu group 2 are for auto-measurement. There are 9 menus in this group (ref.Figure1. Menu Group2). Users can set these 9 menus as they need. There are 7 parameters can be observed for channel A/B/C: Parameter to measure

meaning

Max

Max value of input (CHA/B/C) 12

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Min

Min value of input (CHA/B/C)

Vbt

Voltage of battry(common)

FPS

Frames per second(common)

Vpp

Vpp of input (CHA/B/C)

Vdc

Mean value of input(CHA/B/C)

RMS

Effective value of input(CHA/B/C)

Also, different color represents different channel. And, because the Vbt and FPS is common for all the channels, the back color of them is white. Firmware Upgrade

Firmware can be downloaded via this link: http://www.elechouse.com /elechouse/images/product/DS203/ DS203_firmware.rar Installation into the DS203 are shown as follows: 1. CFG_FPGA.ADR + VxxxFPGA.bin. The two files for FPGA logic, you need to install the .ADR file and then the .bin file. 2.

logo_00B.ADR + logo_001.bin. The logo files, you need to install the .ADR file and then the .bin file.

3.

APP_Bxxx.hex, the app firmware.

4.

SYS_Bxxx.hex, the sys firmware.

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The firmware of DS203 is upgradable via USB as following steps: 1. Connecting DS203 via mini USB cable to PC, Power up the DS203 while pressing ">||", you will see a virtue USB disk added on your PC and the screen of DS203 will display words “Device Firmware Upgrade Vx.xx”, “Please Copy .Hex/.Bin file to DFU virtual USB disk.”. 2. If you want to update App or Sys, copy APP_xxx.hex or SYS_xxx.hex into the USB disk. Note that only one file can be copied each time. The USB disk will auto-reset, the disk window will automatically be closed, and the file name will be changed to APP_xxx.rdy or SYS_xxx.rdy. 3. If you want to update the logo or logic in FPGA, You should first copy the logo/FPGA.ADR file into the USB disk. After the Auto-reset, the file name changes to logo/FPGA.SET. Then, copy the logo/FPGA.bin into the disk, After the Auto-reset, the file name changes to logo/FPGA.rdy. 4. Reset the DS203, the upgrade process is finished For example, you want to update the APP firmware to v2.35 to correct the calibration error, you just need to update the app to 2.35, as there is no update in the sys firmware. You should do as follows: 1. Download the APP2.35 zip from web. 2. Unzip it, you would see APP_B235.hex. 3. Connect the Quad to PC via USB, and power it with the ">||" been pressed. The screen of DS203 will display words “Device Firmware Upgrade Vx.xx”, “Please Copy .Hex/.Bin file to DFU virtual USB disk.” And you can see a virtual disk added on your PC. 4. Copy the App_B235 to the virtual disk. The virtual disk window will automatically close and change the file name to: APP_B235.RDY, it means the upgrade is successful. 5. Reset (Restart) DS203 and the upgrade is done. Calibrate the Quad as shown in the Calibrate catalogue below in this document. 14

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The issue right now in your DS203 can be seen on the screen when you power it on. Design your own logo Logo files are included in the firmware package. You can download via the link above. When you want to change the logo displayed on the screen, you may do it as follows: 1. Design your logo. The logo you designed should be a picture saved as “xxx_logo.bmp” (note the formate should be bmp and the name of the logo should be 8 characters including the “_”), and the picture should be 16 colors and in size of 64x256.The logo picture should be 8.11kB. 2. Then change the document style of the picture (namely the suffix) from “.bmp” into “.bin”. 3. Connect the Quad to PC via USB, and power it with the ">||" been pressed. The screen of DS203 will display words “Device Firmware Upgrade Vx.xx”, “Please Copy .Hex/.Bin file to DFU virtual USB disk.” And you can see a virtual disk added on your PC. 4. Copy the LOGO_00B.ADR that you downloaded into the Virtual disk. It will reset automatically and change the name into LOGO_00B.SET which means that you can put in logo file now. 5. Copy the “xxx_logo.bin” into the Virtual disk. It again will reset automatically and change the logo name into “xxx_logo.rdy” and the “LOGO_00B.ADR” into “LOGO_00B.USE” which means the logo is loaded successfully. 6. Reset (restart) DS203, you can see your logo on it, as picture below shows.

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Calibrate Calibrate the probe

When you first receive your DS203 or after a long time using, you may need to calibrate your DS203. Step1: Open the back cover, and you will see 6 adjustable capacitors.

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Step2: Connect the wave out to CHA or CHB, set the wave output: square 10Khz, and the CHA or CHB DC couple, 0.5V/div, trigger mode: auto, and 50us Step3: adjust the A1 and A2, to calibrate the CHA, B1 and B2 to calibrate CHB. To make the wave as good as you can: After calibration:

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Calibrate the DS203 (for app2.35 or above)

If you update your App to app2.35, you might need to do this calibration. A standard voltmeter and an adjustable voltage source are needed for calibrating the DS203. In working state, when the main menu CH (A) was selected, pressing the calibrate button about 2s to begin the calibration of CH (A). While main menu CH (B) was selected, pressing the calibrate button about 2s to begin the calibration of CH (B). 1. Connect the probe to ground. And, adjust the Cell “ZERO”—“50mv” to 0.00 with Navigator A. Then, press down the Navigator A to jump to the cell “DIFF”-“50mv”. Adjust this cell to 0.00(-1 or +1 can be acceptable too). Press down the Navigator A, the cursor jumps back to cell “ZERO”—“50mv”, make sure the 2 cells are 0.00(or +1 ,-1). 2. With the probe grounded. Jump to the 0.1v row with Navigator B. Adjust the cell “ZERO”-“0.1V” to 0.00. DO NOT adjust the “DIFF”-“0.1V” now, as it can not be adjusted. 3. Repeat the above operation. Now, the result should be (probe ground): CHA 50mv 0.1v 0.2v 0.5v 1v 2v 5v 10v

ZERO 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

DIFF 0.00(or +1,-1) --------------18

Voltage

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4. Press the Navigator B to jump to the “voltage” line, Set the voltage source to 250mv-300mv as the prompt (you can measure the voltage with a voltmeter to get the voltage precisely), connect it to the DSO channel you are calibrating, and adjust the “voltage” to the voltage you measured. For example, if your source was 290mv, adjust the cell”voltage”-“50mv” to 290mv. Push/pull the Navigator B to jump to the other row. 5. For the other row, repeat the operation as the prompt. For example, my voltage source for all the row was: 300mv, 600mv, 1.2v, 3v, 6v, 10v, 10v, 10v (I do not have a voltage source of 30v and 60v, so ,I use 10v for the row 5v and row 10v) . CHA 50mv 0.1v 0.2v 0.5v 1v 2v 5v 10v

ZERO 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

DIFF 0.00(or +1,-1) ---------------

Voltage 300mv 600mv 1.2v 3.00v 6.00v 10.00v 10.00v 10.00v

6. After all this have been done, push the Navigator B to the exit mode. There are 3 models: exit without calibration/exit with calibration/exit with restore defaults. Select the “exit with calibration” with Navigator A. And then press the calibrate button. 7. The DS203 shows “Save the calibration data” means you have done the calibration successfully. Assemble Step 1

Split the EVA sheet into two, stick one on the back of decorative aluminum board, and attach the other one to the surface of the shell to protect the LCD screen.

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Step 2

Note the direction when attaching it, a notch there for the square hole can help you. It is only when you finish the sticking that you can tear up the protection paper for the back-adhesive paper.

Step 3

When approaching the glass to the top shell, do not tear up the protection film and prevent dust during the installation process.

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Step 4

Stick the decorative aluminum board on the battery shell.

Step 5

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Step 6

Stick the EVA adhesive sheet on the battery shield.

Step 7

Install the battery shield

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Step 8

Install the keys

Step 9

Install the main board in the bottom shell

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Step 10

Install the main board in the bottom shell

Step 11

Install the surface shell

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Step 12

Install the surface shell

Step 13

Install the battery

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Step 14

Install the battery shield

Technique Information Please note: schematic diagram is attached on the page.

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Disclaimer and Revisions 27

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The information in this document may change without notice. Revision History Rev. A

Date May. 22nd, 2011

Author Wilson Shen

28

Description Initial version

C+ EN Vi

3V6

TC1221

105

105

105 105 105 105

XC6206P122

CS CK Q D RST WP Vss Vcc

EC0 Q1

C29 2V8 101

K1

K2 K3

K4

FUNC FIT ESC SEL RUN 1 4 CHRG 3K D10A RED R64 3V6 2V8 L9 U15 QX3406AL C35 3 R52 SW 6.8uH 4 R54 Vin 11K

R61

MINI_USB

22R

L8 CESD5V0AP

Vusb D+ FB

PWR U14 4 C30

Vcc Batt CHRG PRG

105

LTC4054

2

Gnd

3 CHRG 1 5 R50 BAT

Vbat

1

R48

C31

R51 105 3.7V

2 C32

100uF/10V

EN

FB

5

5

90K9 51R

3

Fout

CESD5V0AP

U7

D6

1

OPA354

CN5 Fout L3

2

FB

R43 1K1

3

7 5 44 43 42 41 40 39 38 37 47 REFB REFA D7A D6A D5A D4A D3A D2A D1A D0A CKA REFO NC D7B D6B D5B D4B D3B D2B D1B D0B CKB

90K9

AQ7 AQ6 AQ5 AQ4 AQ3 AQ2 AQ1 AQ0 CKA

CN7

ISP

1 2 3 4 5 6

1K1

2 2

R47 4

D10B

2

YEL+GRN

C33

2V8

X1 8MHz 7pF

U8 STM32F103VCT6

VDD VDD VDD VDD VDD VBAT VREF+ VDDA VSS VSS VSS VSS VSS VREFVSSA PB0 PA2_T23 PA3 PA5 PA6_T31 PA7_T32 PC4 PB15 PB14 PB2_BT1 PB1 PB10 PB11 PB12 PB13

C36 7pF

2V8 1V2 75 11 11 35 100 61 50 77 28 6 6 14 21 22 22 31 99 38 27 50 10 58 74 67 49 88 20 92 19 75 35 63 25 ADC_EN 72 26 71 30 69 31 68 SCK 32 66 SDA 33 65 54 Cdone 43 53 C_RST 44 37 60 36 62 ClrW 47 C_SS 49 48 C_SCK 48 51 C_SI 46 52 C_SO 45

C37

105

R55 11K

R60

I/O I/O I/O I/O I/O I/O I/O I/O I/O_GBIN I/O_GBIN I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O

BOOT0 PB3_SCK PB4_SIMO PB5_MOSI PD11_A16 PD12_A17 PA10_RX PA9_TX PC6_T81 PC7_T82 PA14 PA13 PC8 PC9 PC10 PC11 PC12 PA15 PD6 NC

PC3 PC5 PA8_MCO PB6 PA4_DAC1 PB7_T42 PC0_AIN10 PC1_AIN11 PD13_A18 PD3 PA0_T51 PA1_T52 PE0 PE4 PC2_AIN12 PD2 PA12_D+ PA11_DPE3 PE5 PE6 PC13 PB8_T43 PB9_T44 PE2 PC14 PC15 PE1 OSC0 OSC1

VCC VCC VCC VCC VIO VIO VIO VIO VIO SPI_VCC VIO VIO VIO VIO VPP_2V5 I/O_GBIN I/O I/O I/O I/O I/O I/O CDONE C_RST I/O I/O_GBIN SPI_SS SPI_SCK SPI_SI SPI_SO

2v8

22pF

Gnd

3K

2V8

2K

SW

11K

R57 D8

11K

1 2 3 4 5 G

R49

D-

22R

2K

CN8

VB R56

11K

L7 FB

U19 FDFMA2P853 6 2 3

11K

LN2300

1 5 4

V1 V2 AC1 Ax0 Vbat Vusb D+ DAx5 AC2 Bx1 Bx0 EC1 CHRG Ax1 Ax2 Bx2 Bx5 ITEM

K9 K10 K8

K5 K7 K6

K4

K3

BZ

6 5 3 8

K2

2V8 K1

U13

M25PE16

2

2 3 T 1

C26

COut Gnd

CN4 Din

2V8

FB

R53

C34 100uF/10V

U9 ICE65L04F_VQ100

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I/O I/O I/O I/O I/O I/O I/O I/O_CS1 I/O_CS0 I/O I/O I/O I/O I/O I/O I/O I/O I/O I/O_GBIN I/O_GBIN

1V2

1 2 7 4

6 5 2

U11 Vo Vi

3

2 3 T 1

22uF/6.3V

3 1 4

C41 C64 C63 C62 C61

C49

105 105 105

MSCK MOSI

105

U12

105 105 105 105 105 105 105

BZ

3V6

SLEEP RST MISO EECS

C25

R38

R42

L10

1 27 28 29 36 37 40 42 41 51 52 53 54 56 57 59 20 30 33 34

105 105 105

100uH

L6

CESD5V0AP

Mode NE1 WR RD DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

105

L4

C53 22uF/6.3V 22uF/6.3V

Fout EECS Ai Bi SLEEP K9

C54 C55 C56 C57 C58 C59 C60

18 34 67 92 29 93 15 16 60 84 23 24 97 3 17 83 71 70 2 4 5 7 95 96 1 8 9 98 13 12

11K

C27 C28 C45 C46 C47 C48

C70 105

100uH

1K1

C74 33pF

PD7_NE1 PD4_NOE PD5_NWE PD10_D15 PD9_D14 PD8_D13 PE15_D12 PE14_D11 PE13_D10 PE12_D9 PE11_D8 PE10_D7 PE9_D6 PE8_D5 PE7_D4 PD1_D3 PD0_D2 PD15_D1 PD14_D0 NRST

100uH

105 105

C72 22uF/6.3V C38

C69 105

C24

2V8

L5

1

105 105 105 105 105 105 105 105

C68 105

R58

R26

88 85 86 57 56 55 46 45 44 43 42 41 40 39 38 82 81 62 61 14

VDDA

C71 C23 C39 C40 C42 C43 C44 C50 C51 C52

C67 105

Mode H/L MCO

3.0" 240*400 TFT LCD

V+

C66 105

V+

R40

R37

11K

SLEEP

R34 #51R

NE1 RD WR DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 RST

LCD-ID NC FMARK NC GND GND NC LED+ NC VCC IOVCC NC CS RST RS WR RD DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

LED1LED2LED3LED4-

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C65 105

OPA354

#1K1

DTr

U18 1

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LCM

U10 QX5239B-20mA 8 33 Gnd Led1 7 34 NC Led2 6 35 EN Led3 5 36 Vdd Led4

D9 SSA34

3 R28 4

MSCK MISO MOSI CLR RS RX TX BL BZ K1 K5 K4 K3 K2 K7 K6 K8 K10

11K BT0

105

S1 NC NC NC VDD VDD VDD VDD VD VD VD VD S2

AD9288-40

94 89 90 91 58 59 69 68 63 64 76 72 65 66 78 79 80 77 87 73

R59

C22

12K R32

1K1 R24

NE1 CLR RS WR RD DB15 DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0

2V8

22uF/6.3V

V2

-3V

1 5 9 37 31 6 4 32 3 8 7 2 10 30 11 12 13 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14

BL

3V6

4 1 2 3

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74HC4052PW V+

S4 CPC1017 3V6

C20 105

C21

AIN AIN GND DFS GND GND GND GND GND GND GND BIN BIN

8 nPD 26 36 35 2V8 46 33 28 15 48 31 30 13 9 VDDA

6 25 17 18 19 20 21 22 23 24 14

22K

3K3

74HC4052PW

R20

C_SO

Option

D5

R39

BT0 RST RX TX

Bx0 V+

C18 105 12K R30

Cdone

Mode

8

R16

R31 12K

2 3 1 4 12 16 27 29 32 34 45 10 11

11K

100 CKB 99 BQ7 97 BQ6 96 BQ5 95 BQ4 94 BQ3 93 BQ2 91 BQ0 90 BQ1 89 87 AQ3 86 AQ4 85 AQ6 83 AQ7 82 AQ5 81 CKA 80 AQ1 79 AQ0 78 AQ2 74

0.5V

1K1 R36

3K3

22K 10p

C73 33pF

CN3 Cin

R41

CTr

U6

C17 105

11 14 15 13 3 2 5 4

X0 X3 Gnd X1 CS X2 B X A Y V- Y2 V+ Y1 Y0 Y3

Ai

BQ7 BQ6 BQ5 BQ4 BQ3 BQ2 BQ1 BQ0 CKB

7

12 8 6 9 Bx0 10 Bx1 7 16 1

R25

1

1K1

5

C10

27K

U2B OPA2354

12 8 6 9 Bx5 10 Bx2 7 16 1

U17 OPA354

C19 105

U16

X3 X0 X1 Gnd X2 CS X B Y A Y2 VY1 V+ Y3 Y0

4 R27 3

5

R2A 180K

6

11 14 15 13 3 2 5 4

10p

R12 R4

U4

R33 #51R

V+

R29 12K

74HC4052PW

12K

C6A 5/30pF

V1

R22

C12

R14

4 5 2 3 13 15 14 11

Y0 Y3 V+ Y1 V- Y2 A Y B X CS X2 Gnd X1 X0 X3

12K

5K1

22K

4 -3V

1 16 7 10 Ax1 9 Ax0 6 8 12

74HC4052PW

5K1

OPA2354

2 R4A

1K1 R62

27K

3K

R18 R10

1R8

U5 1 16 7 10 Ax2 9 Ax5 6 8 12

Y3 Y0 Y1 V+ Y2 VY A X B X2 CS X1 Gnd X3 X0

R21

22K

271

U2A 3K

101

C8

620K R2

10p

R9

27K

C8A

3/10pF C4A

AC2 S2 CPC1017

3

10V

180K

105/100V C2

1 R7

OPA2354

C11

R17

R6A 4K7

C2A 5/30pF

CN2

U1A

3

10V

4K7 R5A

R6 3K3

Bin

2

-3V

U3

10p

R13

V+

4 5 2 3 13 15 14 11

C9

R11 -3V

12K

L2 FB

R19

R3A

271

C7A 101

3K3 R5

L1 FB

R3

3K

C1A 5/30pF

7

3K

C7

U1B 27K

C5A 5/30pF

R15

OPA2354

6

R23 1K1

V+

5

0.5V

180K

12K

C3A 3/10pF

CN1 Ain

R1A

Ax0

4

R1 620K C1 105/100V

R35

1K1

180K

R63

Bi

S3 CPC1017 1K1

8

S1 CPC1017 AC1

DS203V2.6_SCH

64 H/L 15 MCO 24 CTr 25 DTr 3 4 9 8 7 26 21 19 18 16 13 12 10 2 nPD 73 76 5 17 23 32 39 47 55 70 84 98