BU9847GUL-W_10 Datasheet, PDF (4/19 Pages) Rohm – WL-CSP EEPROM family I2C BUS

BU9847GUL-W
●Block diagram
VCC
GND
A2
9bit
Address
decod er
4Kbit EEPROM array
Slave – word
9 bit
address register
8 bit
Data
regi ste r
START
STOP
Control circuit
ACK
High voltage
generating circuti
Power source
voltage detection
Fig.2 Block diagram
●Pin assignment and description
Technical Note
WP
SCL
SDA
○ ○ ○ ^B
B1
B2
B3
○ ○ ○ ^A
A1
A2
A3
1
2
3
Fig.3 BU9847GUL-W(bottom view)
INDEX Post
Land No.
B3
B2
B1
A3
A2
A1
Terminal name
A2
GND
SDA
Vcc
WP
SCL
Input/ Output
Input
-
Input/Output
-
Input
Input
Function
Slave address setting terminal
Reference voltage of al input / output, 0V
Slave and word address, Serial data input serial data output.
Connect the power source.
Write protect terminal
Serial clock input
●Characteristic data (The following values are Typ. ones.)
6
6
5
5
4
SPEC
3
2
Ta=85°C
1
Ta=-40°
Ta=25°C
0
0
1
2
3
4
5
6
Vcc[V]
Fig.4 H input voltage VIH1,2,3
(A2,SCL,SDA,WP)
4
3
Ta=85°C
Ta=-40°
2
Ta=25°C
1
SPEC
0
0
1
2
3
4
5
6
Vcc[V]
Fig.5 L input voltage VIL1,2,3
(A2,SCL,SDA,WP)
1
0.8
0.6
0.4
Ta=25°C
Ta=85°C
SPEC
0.2
Ta=-40°
0
0
1
2
3
4
5
6
IOL2[mA]
Fig.6 L output voltage VOL2-IOL2
(VCC=1.7V)
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4/18
2010.09 - Rev.A