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Epson S5U1C17801T1100 15 LED/LCD Backlight Control Circuit with MFT0

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15 LED/LCD BACKLIGHT CONTROL CIRCUIT WITH MFT0

S5U1C17801T1100 HARDWARE MANUAL EPSON 37

(SOFTWARE EVALUATION TOOL FOR S1C17801)

15 LED/LCD Backlight Control Circuit with MFT0

The SVT17801 is equipped with a LED that can be controlled by MFT0. The following diagram shows how the

EEPROM is connected to the SVT17801.

DIC-152-6P

1

1

5

3

5

3

2

6

4

2

4

G V

VDD

J12 11pin

(LCD backlight)

VDD

JP3

JP3

MFT0

U20

TS5A3166

R90

470

LED3

LTW-170TK

C65

0.1µF

LCD_BL_ON

LCD_BL_PWM

D201_PWM

S1C17801

Fig. 15.1 Connection Circuit between MFT0 and LED/LCD Backlight

Pre-stage switching IC (TS5A3166) is switched by changing phase in MFT0 H/L areas, and brightness of the LED

can be changed visually by turning ON and OFF the backlight of LED and LCD panel repeatedly in accordance

with the MFT0 phase.

∗ MFT0 is an I/O port with 12 mA of drive current. A circuit shown in the figure 15.1.has a pre-stage switch IC,

which however can be replaced simply by a 470Ω resistor for direct drive. (The drive current in this case is ap-

proximately 7 mA.)

Contents

Main NOTICE SEIKO EPSON CORPORATION 2008, All rights reserved. Configuration of product number Devices S1 C 17xxx F 00E1 Development tools S5U1 C 17000 H2 1 00 Page Page Page 1 Features 2 Contents of Package 3 Name and Functions of Each Part Name of Each Part The following describes name and functions of each part: Page Page Page S5U1C17801T1100 HARDWARE MANUAL EPSON 7 Board Dimensions CPU Board Dimensions The following drawing shows dimensions of the CPU board. <Surface> <Rear Face> ICD Board Dimensions The following drawing shows dimensions of the ICD board. <Parts Side View> 4-R2 <Soldering Side View> LCD Board Dimensions The following drawing shows dimensions of the LCD board. <Surface> <Rear Face (View from Surface)> LCD Panel Board Dimensions Fig. 3.2.4.1 LCD Panel Dimensions Main Parts <CPU Board> <ICD Board> <LCD board> Functions of Each Part ICD Board ICD Board Reset Switch ICD Board LED CPU Board Page 4 BLOCK DIAGRAM 14 EPSON S5U1C17801T1100 HARDWARE MANUAL (SOFTWARE EVALUATION TOOL FOR S1C17801) 4 Block Diagram Fig. 4.2 Block Diagram for ICD Board S1C33E07 Host PC Each block diagram for the the SVT17801 CPU board and ICD board is shown below. 5 Operating Environments and Starting Procedures Software Simple Development Environments Operation under Software Simple Development Environments Operating Mode of CPU Connection and Start Installing the USB driver Page Standalone Operation of SVT17801 Standalone Operation Connection and Start ICD Board Firmware Update Procedures 6 Difference between ICD Board and ICD Mini 7 I/O Port Page 8 Jumper Switch Settings Three jumper switches are installed on the surface of the SVT17801. Each function is as follows: Setting for JP1 8 JUMPER SWITCH SETTINGS Setting for JP2 Fig. 8.2.1 JP2 Related Circuit Setting for JP3 9 Connection Circuit to External Memory SRAM, NOR Flash, NAND Flash, and EEPROM are connected to the SVT17801 as external memory modules. SRAM Connection Circuit NOR Flash Connection Circuit NAND Flash Connection Circuit EEPROM Connection Circuit 10 Power Control Circuit for Battery Backup Function Battery Backup Function Power Control Circuit for Battery Backup Function #STBY Pin WAKEUP Pin JP2 and JP3 Settings RSTO (Power Switch) and WAKEUP Pin Shifting to Standby Mode Releasing Standby Mode 11 LCD PANEL CONNECTION CIRCUIT 32 EPSON S5U1C17801T1100 HARDWARE MANUAL (SOFTWARE EVALUATION TOOL FOR S1C17801) 11 LCD Panel Connection Circuit SW For information about controlling the LCD panel, see the Application Note. Fig. 11.1 LCD Panel Module Connection Circuit Table 11.1 Name and Function of Signal on LCD Panel Module Touch Panel Controller Connection Circuit Fig. 11.1.2 Image of X-axis and Y-axis Analog Values of Touch Panel EPSON Fig. 11.1.1 Touch Panel Connection Circuit Table 11.1.1 Function of Touch Panel Control Signal 12 Key Input Circuit on CPU Board 13 Rotary Encoder Connection Circuit 14 Tri-color LED Connection Circuit 15 LED/LCD Backlight Control Circuit with MFT0 16 Infrared Emitting Diode/Receiving Module Connection Circuit Emitting and Receiving from/by Infrared Area 17 MMC (Multi-Media Card) Connection Circuit For information about controlling the MMC card using SPI mode, see the Application Note. 18 USB Connection Circuit S5U1C17801T1100 HARDWARE MANUAL EPSON 41 18 USB Connection Circuit For information about controlling USB, see the Application Note. USB Fig. 18.1 USB Connection Circuit 19 AUDIO CONNECTION CIRCUIT 19 Audio Connection Circuit Fig. 19.1.1 AudioCodec IC Connection Circuit S1C17801 Switching Audio Master Clock S1C17801 20 Exclusive Control of Ports Fig. 20.1 Switch IC Connection Circuit Power switch LCD module LCD module J8 connector S1C17801 21 Serial The S1C17801 has SPI, UART, I2C, and I2S serial ports. Each of the ports is multiplexed with GPIO. 22 Specifications For Cpu Board Connectors J6 Connector (to Connect with ICD) J7 Connector The following shows specifications of J7, a connector for expansion board. J8 Connector The following shows specifications of J8, a connector for expansion board. J12 Connector J13 Connector J18 Connector Appendix A How to Measure Current Consumption A.1 Measuring VDD Current Consumption S1C17801 A.2 Measuring AVDD Current Consumption A.3 Measuring RTCVDD Current Consumption International Sales Operations AMERICA ASIA EUROPE