BU9897GUL-W (128Kbit)
● Block Diagram
Datasheet
A0 1
14bit
128Kbit EEPROM array
8bit
8
Vcc
A1 2
Adddress
decoder
14bit
Slave - word
address register
Data
register
7
WP
START
STOP
A2
3
Control circuit
6
SCL
ACK
GND
4
High voltage
generating circuit
Power source
voltage detection
5
SDA
● Pin Configuration
(BOTTOM VIEW)
C
VSS
A2
A1
VSS
B
A
SDA
A0
VSS
SCL
1
WP
2
Vcc
3
VSS
4
● Pin Descriptions
Land No.
C4
C3
C2
C1
B4
B3
B1
A4
A3
A2
A1
Terminal
name
GND
A1
A2
GND
GND
A0
SDA
GND
Vcc
WP
SCL
Input / output
-
Input
input
-
-
input
Input / output
-
-
input
input
Function
Please set this OPEN. Please don’t connect this GND.
Slave address
Slave address
Reference voltage of all input / output
Please set this OPEN. Please don’t connect this GND.
Slave address
Slave and word address, Serial data input serial data output
Please set this OPEN. Please don’t connect this GND.
Power Supply
Write protect terminal
Serial clock input
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? 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111 ? 15 ? 001
4/22
TSZ02201-0R2R0G100500-1-2
4.SEP.2012 Rev.001
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