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BU99022NUX-3 датащи(PDF) 4 Page - Rohm

номер детали BU99022NUX-3
подробное описание детали  I2C BUS 2kbit 2kbit 2ports serial EEPROM
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производитель  ROHM [Rohm]
домашняя страница  http://www.rohm.com
Logo ROHM - Rohm

BU99022NUX-3 датащи(HTML) 4 Page - Rohm

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TSZ02201-0R2R0G100010-1-2
2011.12.19
Rev.001
© 2011 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
BU99022NUX-3
Datasheet
●Block diagram
●Pin assignment and description
Pin No.
Pin Name
Input/output
Function
1
Vcc1
Connect the power source
2
GND
Reference voltage of all input/output,0V
3
SCL1
Input
Serial clock input for port1
4
SDA1
input/output
Serial data input /serial data output for port1 EEPROM
5
SDA2
input/output
Serial data input /serial data output for port2 EEPROM
6
SCL2
input
Serial clock input for port2 EEPROM
7
WP2
input
Write protect terminal for port2 EEPROM
8
Vcc2
Connect the power source
●Operating condition of port1 and port2 EEPROM
○ : operating possible
×: operating impossible
Vcc1
Vcc2
port1
port2
0V
0V
×
×
0V
Vcc
×
0V
open
×
×
Vcc
0V
×
Vcc
Vcc
Vcc
open
×
open
0V
×
×
open
Vcc
×
open
open
×
×
4
3
2
1
SDA1
SCL1
GND
Vcc1
Data
register
Word
Address register
Address
Control logic
Vcc level detect
High voltage gen.
2Kbit EEPROM array
8
7
6
5 SDA2
SCL2
WP2
Vcc2
Address
decorder
Word
Address register
Data
register
Control logic
2Kbit EEPROM array
decorder
High voltage gen.
Vcc level detect
stop
start
start
stop
8bit
8bit
8bit
8bit
Fig.4 Block Diagram
Port1 EEPROM
Port2 EEPROM


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