BU9832GUL-W Datasheet, PDF (4/14 Pages) Rohm – Silicon Monolithic Integrated Circuit

◇PIN CONFIGURATION
CS
SCK
SI
HOLD
WP
SO
INSTRUCTION DECODE
CONTROL CLOCK
GENERATION
VOLTAGE
DETECTION
WRITE
INHIBITION
HIGH VOLTAGE
GENERATOR
INSTRUCTION
REGISTER
ADDRESS
ADDRESS
10bit
REGISTER
DECODER
DATA
8bit
REGISTER
R/W
AMP
Fig.2 BLOCK DIAGRAM
STATUS REGISTER
10bit
8bit
8,192 bit
EEPROM
4/13
◇PIN CONFIGURATION
C1 C2 C3
C
B1
B3
B
A1 A2 A3
A
INDEX POST
◇PIN NAME
1 23
Ｆｉｇ-3 BU9832GUL-W （bottom view）
Land No. PIN NAME
A1
WP
A2
GND
A3
SI
B1
SO
B3
SCK
C1
CS
C2
Vcc
C3
HOLD
I/O
IN
－
IN
OUT
IN
IN
－
IN
FUNCTION
Write Protect Input
When WPEN bit is high in status register, WP input pin become
active and is able to inhibit “Write Status Register”
Ground （0V）
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.
REV. B