Datasheet

Datasheet

5/10

TSZ02201-0Y1Y0F300060-1-2

© 2012 ROHM Co., Ltd. All rights reserved.

19.Jun.2012 Rev.001

www.rohm.com

TSZ22111・15・001

BU21021GUL

●Block Diagram

Figure 4. Block Diagram

●Description of Blocks

Screen-I/F

: 4-wire touch screen interface

ADC

: 12-bit SAR A/D converter

OSC

: 20MHz oscillator for internal block

Regulator

: Internal power supply.

DVDD can be supplied from external

Clock generator : System clock and internal timing generation

CPU

: Noise filtering, dual touch detection and touch coordinates generation

Work memory

: CPU work memory

Program memory : CPU program memory

EEPROM-I/F

: External EEPROM-I/F for CPU program memory downloads

Host-I/F

: 4-wire SPI I/F / 2-wire serial bus I/F

Filter

: Median average filter (Maximum 16 data)