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BU21077MUV データシート(PDF) 5 Page - Rohm

部品番号 BU21077MUV
部品情報  Capacitive Switch Controller IC
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メーカー  ROHM [Rohm]
ホームページ  http://www.rohm.com
Logo ROHM - Rohm

BU21077MUV データシート(HTML) 5 Page - Rohm

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BU21077MUV
TSZ02201-0L5L0F300820-1-2
© 2013 ROHM Co., Ltd. All rights reserved.
14.Jul.2016 Rev.002
www.rohm.com
TSZ22111・15・001
Host Interface
BU21077MUV has 2-wire serial bus interface. It is compatible with I2C protocol and BU21077MUV is a slave device.
Slave address of BU21077MUV is 5Ch (Shown 7-bit). And it supports Standard-mode (100 KHz) and Fast-mode (400
kHz). It has sequential read for reduce access time.
S
1-7
8
9
P
1-7
8
9
1-7
8
9
Figure 7. 2-wire Serial Bus Interface Data Format
SDA
tLOW
tHD;STA
SCL
repeated
START
condition
tHD;DAT
tHIGH
tHD;STA
tSU;STA
tSU;DAT
tBUF
tSU;STO
STOP
condition
START
condition
START
condition
Figure 8. 2-wire Serial Bus Interface Timing Chart
Parameter
Symbol
Standard-mode
Fast-mode
Unit
Min
Max
Min
Max
SCL Clock Frequency
fSCL
0
100
0
400
kHz
Hold Time for ( Repeated ) START Condition
tHD;STA
4.0
-
0.6
-
μs
Low Period of SCL
tLOW
4.7
-
1.3
-
μs
High Period of SCL
tHIGH
4.0
-
0.6
-
μs
Data Hold Time
tHD;DAT
0.1
3.45
0.1
0.9
μs
Data Setup Time
tSU;DAT
0.25
-
0.1
-
μs
Setup Time for Repeated Start Condition
tSU;STA
4.7
-
0.6
-
μs
Setup Time for STOP Condition
tSU;STO
4.0
-
0.6
-
μs
Bus Free Time Between STOP and START Condition
tBUF
4.7
-
1.3
-
μs
SDA
SCL
START
Address
ACK
Data
Data
ACK
STOP
NACK
/ ACK
R/W


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