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參數(shù)資料
型號: PCA9502BS,157
廠商: NXP Semiconductors
文件頁數(shù): 2/25頁
文件大小: 0K
描述: IC I/O EXPANDER I2C/SPI 24HVQFN
標準包裝: 2,450
接口: I²C,SPI
輸入/輸出數(shù): 8
中斷輸出:
頻率 - 時鐘: 400kHz
電源電壓: 2.3 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 24-VFQFN 裸露焊盤
供應商設(shè)備封裝: 24-HVQFN(4x4)
包裝: 托盤
其它名稱: 935281363157
PCA9502BS
PCA9502BS-ND
PCA9502_3
NXP B.V. 2006. All rights reserved.
Product data sheet
Rev. 03 — 13 October 2006
10 of 25
NXP Semiconductors
PCA9502
8-bit I/O expander with I2C-bus/SPI interface
Fig 9.
I2C-bus data formats
002aab458
DATA
SLAVE ADDRESS
master write:
S
W
A
DATA
A
P
data transferred
(n bytes + acknowledge)
START condition
STOP condition
acknowledge
write
DATA
SLAVE ADDRESS
master read:
S
R
A
DATA
A
NA
P
data transferred
(n bytes + acknowledge)
START condition
STOP condition
acknowledge
not
acknowledge
read
DATA
SLAVE ADDRESS
combined
formats:
S
R/W
A
DATA
A
P
data transferred
(n bytes + acknowledge)
START condition
STOP condition
acknowledge
read or
write
SLAVE ADDRESS
Sr
R/W
A
repeated
START condition
acknowledge
read or
write
direction of transfer
may change at this point
data transferred
(n bytes + acknowledge)
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