參數資料
型號: PCA9671
廠商: NXP Semiconductors N.V.
英文描述: Remote 16-bit I/O expander for Fm+ I2C-bus with reset
中文描述: 遠程16位I / O擴展調頻的I2C總線與復位
文件頁數: 13/34頁
文件大?。?/td> 183K
代理商: PCA9671
PCA9671_1
NXP B.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 20 December 2006
13 of 34
NXP Semiconductors
PCA9671
Remote 16-bit I/O expander for Fm+ I
2
C-bus with reset
8.3 Reading from a port (Input mode)
All ports programmed as input should be set to logic 1. To read, the master
(microcontroller) first addresses the slave device after it receives the interrupt. By setting
the last bit of the byte containing the slave address to logic 1 the Read mode is entered.
The data bytes that follow on the SDA are the values on the ports.
If the data on the input port changes faster than the master can read, this data may be
lost.
Fig 16. Write mode (output)
A5 A4 A3 A2 A1 A0
0
A
S A6
slave address
START condition
R/W
acknowledge
from slave
002aac250
P
06
1
P
07
data to port 0
A
acknowledge
from slave
1
2
3
4
5
6
7
8
SCL
9
SDA
A
acknowledge
from slave
write to port
data output from port
t
v(Q)
P05
data to port 1
data A0 and B0 valid
P16 output voltage
I
trt(pu)
I
OH
P16 pull-up ouput current
P
04
P
03
P
02
P
01
P
00
P
17
P
14
P
13
P
12
P
11
P
10
1
P16
P
15
t
v(Q)
DATA A0 AND B0 VALID
P05 output voltage
I
trt(pu)
I
OH
P05 pull-up ouput current
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PCA9671DB Remote 16-bit I/O expander for Fm+ I2C-bus with reset
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相關代理商/技術參數
參數描述
PCA9671BQ,118 功能描述:接口-I/O擴展器 REMOTE 16BIT GPIO RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數量: 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 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA9671BQ-T 功能描述:接口-I/O擴展器 REMOTE 16BIT GPIO FM+I2C-RESET RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數量: 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 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA9671BS,118 功能描述:接口-I/O擴展器 REMOTE 16BIT GPIO RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數量: 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 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA9671BS-T 功能描述:接口-I/O擴展器 REMOTE 16BIT GPIO FM+I2C-RESET RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數量: 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 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA9671D 功能描述:接口-I/O擴展器 16-BIT I2C FM+ QB GPIO RST PU RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數量: 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 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel