BU21024FV-M_14 Datasheet, PDF (8/20 Pages) Rohm – Resistive Type Touch Screen Controller ICs

BU210243FGVU-LM BU21023MUV BU21024FV-M
EEPROM I/F
(SCL=ECL , SDA=EDA )
BU21024 controllers include an EEPROM interface for firmware download.
Device address of EEPROM is set via register 0x51(EEPROM_ADDR).
Timing Chart
SDA
SCL
t_HD;STA
t_SU;DAT
Address
Read
/Write
ACK
Data
ACK
Datasheet
t_HD;DAT
t_SU;STO
Data
ACK
Parameter
SCL Clock Frequency
START Hold Time
SCL ”L” Width
SCL ”H” Width
Data Hold Time
Data Setup Time
STOP Setup Time
Symbol
f_SCL
t_HD:STA
t_LOW
t_HIGH
t_HD:DAT
t_SU:DAT
t_SU:STO
Min
270
0.7
1.4
1.4
0.7
0.7
0.7
Protocol
*IC does not support the write command.
*IC supports the following read command.
Limit
Typ
310
-
-
-
-
-
-
Unit
Max
350
kHz
0.9
µs
1.8
µs
1.8
µs
0.9
µs
0.9
µs
0.9
µs
Condition
www.rohm.com
© 2014 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
8/16
TSZ02201-0L5L0F300190-1-2
31.Mar.2014 Rev.003