BU9832GUL-W ROHM Co. Ltd., BU9832GUL-W Datasheet - Page 4

• Manufacturer Part Number: BU9832GUL-W
• Description: 1,024?8 Bit Electrically Erasable Prom
• Manufacturer: ROHM Co. Ltd.

◇PIN CONFIGURATION
◇PIN CONFIGURATION
◇PIN NAME
Land No.
HOLD
A1
A2
A3
B1
B3
C1
C2
C3
SCK
CS
WP
SO
SI
PIN NAME
HOLD
INSTRUCTION DECODE
CONTROL CLOCK
GENERATION
GND
SCK
Vcc
WP
SO
CS
SI
INSTRUCTION
REGISTER
C
B
Ｆｉｇ-3 BU9832GUL-W （bottom view）
A
OUT
I/O
－
－
IN
IN
IN
IN
IN
C1
B1
A1
1
Ground （0V）
active and is able to inhibit “Write Status Register”
Write Protect Input
When WPEN bit is high in status register, WP input pin become
Start Bit，Op.code，Address，Serial Data Input
Serial Data Output
Serial Data Clock Input
Chip Select Control
Power Suppｌｙ
Hold Input
Hold Input is able to suspend data transmission for a time.
ADDRESS
REGISTER
DATA
REGISTER
C2
A2
2
Fig.2 BLOCK DIAGRAM
WRITE
INHIBITION
C3
B3
A3
3
REV. B
DETECTION
10bit
VOLTAGE
8bit
ADDRESS
DECODER
R/W
AMP
INDEX POST
HIGH VOLTAGE
GENERATOR
FUNCTION
10bit
8bit
STATUS REGISTER
8,192 bit
EEPROM
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