Datasheet

 2009-2012 Microchip Technology Inc. Preliminary DS41393B-page 37

AR1000 SERIES RESISTIVE TOUCH SCREEN CONTROLLER

9.2 AR1000 Commands

9.3 AR1000 Command Descriptions

9.3.1 GET_VERSION – 0x10

Controller will return version number and type.

Send: <0x55><0x01><0x10>

Receive: <0x55><0x05><Response><0x10><Ver-

sion High><Version Low><Type>

where <Type>

9.3.2 ENABLE_TOUCH – 0x12

Controller will send touch coordinate reports for valid

touch conditions.

Send: <0x55><0x01><0x12>

Receive: <0x55><0x02><Response><0x12>

9.3.3 DISABLE_TOUCH – 0x13

Controller will not send any touch coordinate reports. A

touch will, however, still wake-up the controller if

asleep.

Send: <0x55><0x01><0x13>

Receive: <0x55><0x02><Response><0x13>

TABLE 9-5: COMMAND SET SUMMARY

Command

Value

Command Description

0x10 GET_VERSION

0x12 ENABLE_TOUCH

0x13 DISABLE_TOUCH

0x14 CALIBRATE_MODE

0x20 REGISTER_READ

0x21 REGISTER_WRITE

0x22 REGISTER_START_ADDRESS_REQUEST

0x23 REGISTERS_WRITE_TO_EEPROM

0x28 EEPROM_READ

0x29 EEPROM_WRITE

0x2B EEPROM_WRITE_TO_REGISTERS

R/W R/W R/W R/W R/W R/W R/W R/W

RS1 RS0 TP5 TP4 TP3 TP2 TP1 TP0

bit 7 bit 0

Legend:

R = Readable bit W = Writable bit U = Unimplemented bit, read as ‘0’

bit 7-6 RS<1:0>: Resolution of Touch Coordinates bits

00 = 8-bit

01 = 10-bit

10 = 12-bit

bit 5-0 TP<5:0>: Type of Controller bits

001010 = ARA10