BU9891GUL-W_12 Datasheet, PDF (4/26 Pages) Rohm – WLCSP EEPROM

BU9891GUL-W (4Kbit)
●Block Diagram
CS
Command decode
Control
SK
Clock generation
DI
Command
register
DO
Dummy bit
Datasheet
Power source voltage detection
Write
prohibition
High voltage occurrence
Address
buffer
Data
register
Address
8bit
decoder
16bit
R/W
amplifier
8bit
16bit
4,096 bit
EEPROM
●Pin Configuration
(BOTTOM VIEW)
B
B1
B2
B3
(SK)
(GND)
(CS)
A
A1
A2
A3
(DI)
(DO)
(Vcc)
1
2
3
●Pin Descriptions
Land No.
Pin Name
A1
DI
A2
DO
A3
Vcc
B1
SK
B2
GND
B3
CS
I/O
INPUT
OUTPUT
-
INPUT
-
INPUT
Function
Start Bit, Op.code, Address, Serial Data Input
Serial Data Output, _Ready/Busy Status Output
Power Supply
Serial Data Clock Input
Grand (0V)
Chip Select
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TSZ22111・15・001
4/22
TSZ02201-0R2R0G100440-1-2
3.SEP.2012 Rev.001