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PCA9537 데이터 시트보기 (PDF) - Philips Electronics
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PCA9537
4-bit I2C and SMBus low power I/O port with interrupt and reset
Philips Electronics
PCA9537 Datasheet PDF : 17 Pages
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Philips Semiconductors
4-bit I
2
C and SMBus low power I/O port
with interrupt and reset
Product data sheet
PCA9537
PROTOCOL
START
CONDITION
(S)
BIT 7
MSB
(A7)
t
SU;STA
t
LOW
t
HIGH
BIT 6
(A6)
1 / f
SCL
BIT 1
(A1)
BIT 0 ACKNOWLEDGE
(R/W)
(A)
STOP
CONDITION
(S)
SCL
t
BUF
tr
tf
SDA
t
HD;STA
t
SU;DAT
t
HD;DAT
t
VD;DAT
t
VD;ACK
Figure 13. I
2
C-bus timing diagram; rise and fall times refer to V
IL
and V
IH
t
SU;STO
SW02328
START
SCL
ACK OR READ CYCLE
SDA
30%
RESET
50%
t
REC
I/Ox
50%
t
RESET
50%
t
W
Figure 14. Definition of RESET timing
t
RESET
50%
I/O configured as inputs
SW02340
2004 Nov 29
12
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