參數(shù)資料
型號(hào): PCA9538PW,112
廠商: NXP Semiconductors
文件頁數(shù): 4/34頁
文件大小: 0K
描述: IC I/O EXPANDER I2C 8B 16TSSOP
標(biāo)準(zhǔn)包裝: 96
接口: I²C,SM 總線
輸入/輸出數(shù): 8
中斷輸出:
頻率 - 時(shí)鐘: 400kHz
電源電壓: 2.3 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 16-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 16-TSSOP
包裝: 管件
包括: POR
其它名稱: 935277419112
PCA9538PW
PCA9538PW-ND
PCA9538
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 6 — 6 February 2013
12 of 34
NXP Semiconductors
PCA9538
8-bit I2C-bus and SMBus low power I/O port with interrupt and reset
7.
Application design-in information
Device address is 1110 000x for this example.
IO0, IO2, IO3 configured as outputs.
IO1, IO4, IO5 configured as inputs.
IO6, IO7 are not used and need 100 k
pull-up resistors to protect them from floating.
Fig 11. Typical application
PCA9538
IO0
IO1
SCL
SDA
VDD
(5 V)
MASTER
CONTROLLER
SCL
SDA
INT
IO2
VDD
VSS
INT
10 k
Ω
SUB-SYSTEM 1
(e.g., temp sensor)
IO3
INT
SUB-SYSTEM 2
(e.g., counter)
RESET
controlled
switch
(e.g., CBT device)
A
B
enable
VSS
002aae712
10 k
Ω
10 k
Ω
2 k
Ω
100 k
Ω
(
× 3)
RESET
10 k
Ω
IO4
IO5
IO6
IO7
A1
A0
SUB-SYSTEM 3
(e.g., alarm system)
ALARM
VDD
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