參數(shù)資料
型號： PCA9674PW,112
廠商： NXP Semiconductors
文件頁數(shù)： 14/40頁
文件大?。?/td> 0K
描述： IC I/O EXPANDER I2C 8B 16TSSOP
標準包裝： 96
接口： I²C
輸入/輸出數(shù)： 8
中斷輸出： 是
頻率 - 時鐘： 1MHz
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： 935282735112
PCA9674PW
PCA9674PW-ND
PCA9674_PCA9674A
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 7 — 30 May 2013
21 of 40
NXP Semiconductors
PCA9674; PCA9674A
Remote 8-bit I/O expander for Fm+ I2C-bus with interrupt
while (INT == 1);
//Monitor the interrupt pin. If INT = 1 do nothing
//When INT = 0 then read input ports
<S> <slave address read> <ACK> <1010 0010> <NACK> <P> //Read PCA9674 data
If (P0 == 0)
//Temperature sensor activated
{
// write to PCA9674 with data 0010 1011b to turn on LED (P7), on Switch (P3)
and keep P[1:0] as input ports.
<S> <0100 0000> <ACK> <0010 1011> <ACK> <P> // Write to PCA9674
}
10.3 High current-drive load applications
The GPIO has a minimum guaranteed sinking current of 25 mA per bit at 5 V. In
applications requiring additional drive, two port pins may be connected together to sink up
to 50 mA current. Both bits must then always be turned on or off together. Up to 8 pins can
be connected together to drive 200 mA, which is the device recommended total limit.
Each pin needs its own limiting resistor as shown in Figure 21 to prevent damage to the
device should all ports not be turned on at the same time.
10.4 Migration path
NXP offers newer, more capable drop-in replacements for the PCF8574/74A in newer
space-saving packages.
PCA9670 replaces interrupt output of the PCA9674 with hardware reset input to retain the
maximum number of addresses. PCA9672 replaces address A2 of the PCA9674 with
hardware reset input to retain the interrupt, but limit the number of addresses.
Fig 21. High current-drive load application
002aah758
VDD
P0
P1
P2
P3
P4
P5
P6
P7
VDD
SDA
SCL
INT
AD0
AD1
AD2
CORE
PROCESSOR
VDD
LOAD
Table 6.
Migration path
Type number
I2C-bus
frequency
Voltage range
Number of
addresses
per device
Interrupt
Reset
Total package
sink current
PCF8574/74A
100 kHz
2.5 V to 6 V
8
yes
no
80 mA
PCA8574/74A
400 kHz
2.3 V to 5.5 V
8
yes
no
200 mA
PCA9674/74A
1 MHz Fm+
2.3 V to 5.5 V
64
yes
no
200 mA
PCA9670
1 MHz Fm+
2.3 V to 5.5 V
64
no
yes
200 mA
PCA9672
1 MHz Fm+
2.3 V to 5.5 V
16
yes
200 mA
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA9674PW-T 功能描述:接口-I/O擴展器 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 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA9674TS 功能描述:接口-I/O擴展器 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 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA9674TS,112 功能描述:接口-I/O擴展器 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 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA9674TS,118 功能描述:接口-I/O擴展器 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 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
PCA9674TS-T 功能描述:接口-I/O擴展器 8-BIT I2C FM+ QB GPIO RST 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 安裝風格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
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