參數(shù)資料
型號(hào)： PCA9674ATS
廠商： NXP SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： Remote 8-bit I/O expander for Fm+ I2C-bus with interrupt
中文描述： 8 I/O, PIA-GENERAL PURPOSE, PDSO20
封裝： 4.40 MM, PLASTIC, MO-152, SOT266-1, SSOP-20
文件頁(yè)數(shù)： 15/34頁(yè)
文件大?。?/td> 179K
代理商： PCA9674ATS
PCA9674_PCA9674A_2
NXP B.V. 2006. All rights reserved.
Product data sheet
Rev. 02 — 12 October 2006
15 of 34
NXP Semiconductors
PCA9674/74A
Remote 8-bit I/O expander for Fm+ I
2
C-bus with interrupt
8.4 Power-on reset
When power is applied to V
DD
, an internal Power-On Reset (POR) holds the
PCA9674/74A in a reset condition until V
DD
has reached V
POR
. At that point, the reset
condition is released and the PCA9674/74A registers and I
2
C-bus/SMBus state machine
will initialize to their default states. Thereafter V
DD
must be lowered below 0.2 V to reset
the device.
8.5 Interrupt output (INT)
The PCA9674/74A provides an open-drain interrupt (INT) which can be fed to a
corresponding input of the microcontroller (see
Figure 14
,
Figure 15
, and
Figure 16
). This
gives these chips a kind of master function which can initiate an action elsewhere in the
system.
An interrupt is generated by any rising or falling edge of the port inputs. After time t
v(D)
the
signal INT is valid.
The interrupt disappears when data on the port is changed to the original setting or data is
read from or written to the device which has generated the interrupt.
In the write mode, the interrupt may become deactivated (HIGH) on the rising edge of the
write to port pulse. On the falling edge of the write to port pulse the interrupt is definitely
deactivated (HIGH).
The interrupt is reset in the read mode on the rising edge of the read from port pulse.
During the resetting of the interrupt itself, any changes on the I/Os may not generate an
interrupt. After the interrupt is reset any change in I/Os will be detected and transmitted as
an INT.
Fig 16. Application of multiple PCA9674s with interrupt
002aac122
V
DD
MICROCOMPUTER
INT
PCA9674
INT
PCA9674
INT
device 1
device 2
PCA9674
INT
device 8
相關(guān)PDF資料
PDF描述
PCA9674N Remote 8-bit I/O expander for Fm+ I2C-bus with interrupt
PCA9674TS Remote 8-bit I/O expander for Fm+ I2C-bus with interrupt
PCA9674 Remote 8-bit I/O expander for Fm+ I2C-bus with interrupt
PCA9674A Remote 8-bit I/O expander for Fm+ I2C-bus with interrupt
PCA9675 Remote 16-bit I/O expander for Fm+ I2C-bus with interrupt
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA9674ATS,112 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
PCA9674ATS,118 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
PCA9674ATS-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
PCA9674BS,118 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
PCA9674BS-T 功能描述:接口-I/O擴(kuò)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(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*