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BU9844GUL-W Datasheet(PDF) 4 Page - Rohm

Part # BU9844GUL-W
Description  WL-CSP EEPROM family I2C BUS
Download  19 Pages
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Manufacturer  ROHM [Rohm]
Direct Link  http://www.rohm.com
Logo ROHM - Rohm

BU9844GUL-W Datasheet(HTML) 4 Page - Rohm

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Technical Note
4/18
BU9844GUL-W
www.rohm.com
2010.09 - Rev.A
© 2010 ROHM Co., Ltd. All rights reserved.
●
Block diagram
●
Pin assignment and description
Land No.
Terminal name
Input/ Output
Function
A1
VCC
－
Power Supply
A2
A2
Input
Out of Use (Vcc or GND or OPEN)
B1
WP
Input
Write Protect Input
B2
GND
Input
Ground （0V）
C1
SCL
Input
Serial Clock Input
C2
SDA
Input /Output
Slave and Word Address,
Serial Data Input, Serial Data Output *1
*1 An open drain output requires a pull-up resistor.
●
Characteristic data (The following values are Typ. ones.)
Fig.2 Block diagram
SDA
SCL
WP
A2
16Kbit EEPROM array
Address
decoder
Slave – word
address register
Data
register
Control circuit
High voltage
generating circuti
Power source
voltage detection
9bit
9bit
8bit
ACK
START
STOP
VCC
GND
Fig.3 BU9844GUL-W(bottom view)
0
1
2
3
4
5
6
012
3
456
Vcc[V]
SPEC
0
1
2
3
4
5
6
01
234
56
Vcc[V]
SPEC
0
0.2
0.4
0.6
0.8
1
0
1
2345
6
IOL2[mA]
SPEC
Fig.4 H input voltage VIH1,2,3
(A2,SCL,SDA,WP)
Fig.5 L input voltage VIL1,2,3
(A2,SCL,SDA,WP)
Fig.6 L output voltage VOL2-IOL2
(VCC=1.7V)
Ta=85℃
Ta=25℃
Ta=-40℃
Ta=85℃
Ta=25℃
Ta=-40℃
Ta=85℃
Ta=25℃
Ta=-40℃
C
○○
B
○○
A
○○
12
INDEX post
A1
A2
B1
B2
C1
C2


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