參數(shù)資料
型號(hào): PCA8574ATS,112
廠商: NXP Semiconductors
文件頁(yè)數(shù): 29/32頁(yè)
文件大小: 0K
描述: IC I/O EXPANDER I2C 8B 20SSOP
標(biāo)準(zhǔn)包裝: 75
接口: I²C
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(lèi)型: 表面貼裝
封裝/外殼: 20-LSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 20-SSOP
包裝: 管件
包括: POR
產(chǎn)品目錄頁(yè)面: 824 (CN2011-ZH PDF)
其它名稱(chēng): 568-4238-5
935283491112
PCA8574ATS
PCA8574_PCA8574A
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 3 — 3 June 2013
6 of 32
NXP Semiconductors
PCA8574; PCA8574A
Remote 8-bit I/O expander for I2C-bus with interrupt
The last bit of the first byte defines the operation to be performed. When set to logic 1 a
read is selected, while a logic 0 selects a write operation (write operation is shown in
7.1.1 Address maps
The PCA8574 and PCA8574A are functionally the same, but have a different fixed portion
(A6 to A3) of the slave address. This allows eight of the PCA8574 and eight of the
PCA8574A to be on the same I2C-bus without address conflict.
Table 4.
PCA8574 address map
Pin connectivity
Address of PCA8574
Address byte value
7-bit
hexadecimal
address
without R/W
A2
A1
A0
A6 A5 A4 A3 A2 A1 A0 R/W
Write
Read
VSS
0100
000
-
40h
41h
20h
VSS
VDD
0100
001
-
42h
43h
21h
VSS
VDD
VSS
0100
010
-
44h
45h
22h
VSS
VDD
0100
011
-
46h
47h
23h
VDD
VSS
0100
100
-
48h
49h
24h
VDD
VSS
VDD
0100
101
-
4Ah
4Bh
25h
VDD
VSS
0100
110
-
4Ch
4Dh
26h
VDD
0100
111
-
4Eh
4Fh
27h
Table 5.
PCA8574A address map
Pin connectivity
Address of PCA8574A
Address byte value
7-bit
hexadecimal
address
without R/W
A2
A1
A0
A6 A5 A4 A3 A2 A1 A0 R/W
Write
Read
VSS
011
10
00
-
70h
71h
38h
VSS
VDD
011
10
01
-
72h
73h
39h
VSS
VDD
VSS
011
10
-
74h
75h
3Ah
VSS
VDD
011
10
11
-
76h
77h
3Bh
VDD
VSS
011
11
00
-
78h
79h
3Ch
VDD
VSS
VDD
011
11
01
-
7Ah
7Bh
3Dh
VDD
VSS
011
11
10
-
7Ch
7Dh
3Eh
VDD
011
11
-
7Eh
7Fh
3Fh
相關(guān)PDF資料
PDF描述
PCA9670PW,118 IC I/O EXPANDER I2C 8B 16TSSOP
PCA9674TS,118 IC I/O EXPANDER I2C 8B 20SSOP
PCA9674ATS,118 IC I/O EXPANDER I2C 8B 20SSOP
PCA9674PW,112 IC I/O EXPANDER I2C 8B 16TSSOP
PCA9554D,118 IC I/O EXPANDER I2C 8B 16SOIC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA8574ATS-T 功能描述:接口-I/O擴(kuò)展器 8-BIT I2C FM QB GPIO INT PU RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA8574D 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:Remote 8-bit I/O expander for I2C-bus with interrupt
PCA8574D,512 功能描述:接口-I/O擴(kuò)展器 8-BIT I2C FM QB GPIO INT PU RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA8574D,518 功能描述:接口-I/O擴(kuò)展器 8-BIT I2C FM QB RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA8574D-T 功能描述:接口-I/O擴(kuò)展器 8-BIT I2C FM QB GPIO INT PU RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel