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參數(shù)資料
| 型號： | 935275672118 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8 I/O, PIA-GENERAL PURPOSE, PDSO20 |
| 封裝： | 4.40 MM, PLASTIC, MO-152, SOT-266-1, SSOP-20 |
| 文件頁數(shù)： | 18/33頁 |
| 文件大小： | 316K |
| 代理商： | 935275672118 |
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Philips Semiconductors - PIP - PCF8574; Remote 8-bit I/O expander for I2C-bus
PCF8574; Remote 8-bit I/O
expander for IC-bus
Information as of 2004-09-01
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informed
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datasheet
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General description
The PCF8574 is a silicon CMOS circuit. It provides general purpose remote I/O expansion for most microcontroller families via the two-line
bidirectional bus (IC-bus).
The device consists of an 8-bit quasi-bidirectional port and an IC-bus interface. The PCF8574 has a low current consumption and includes latched
outputs with high current drive capability for directly driving LEDs. It also possesses an interrupt line (INT) which can be connected to the interrupt
logic of the microcontroller. By sending an interrupt signal on this line, the remote I/O can inform the microcontroller if there is incoming data on
its ports without having to communicate via the IC-bus. This means that the PCF8574 can remain a simple slave device.
The PCF8574 and PCF8574A versions differ only in their slave address as shown in Fig.10.
Features
q
Operating supply voltage 2.5 to 6 V
q
Low standby current consumption of 10 uA maximum
q
IC-bus to parallel port expander
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Open-drain interrupt output
q
8-bit remote I/O port for the IC-bus
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Compatible with most microcontrollers
q
Latched outputs with high current drive capability for directly driving LEDs
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Address by 3 hardware address pins for use of up to 8 devices (up to 16 with PCF8574A)
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DIP16, or space-saving SO16 or SSOP20 packages.
http://www.semiconductors.philips.com/pip/PCF8574P.html (1 of 7) [9/3/2004 4:31:22 PM]
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| 933851660112 | 8 I/O, PIA-GENERAL PURPOSE, PDSO16 |
| 935275581518 | 8 I/O, PIA-GENERAL PURPOSE, PDSO16 |
| 935271753118 | 8 I/O, PIA-GENERAL PURPOSE, PDSO20 |
| 935275581112 | 8 I/O, PIA-GENERAL PURPOSE, PDSO16 |
| 0672.300 | Circular Connector; Body Material:Aluminum; Series:PT06; No. of Contacts:55; Connector Shell Size:22; Connecting Termination:Solder; Circular Shell Style:Straight Plug; Circular Contact Gender:Socket; Insert Arrangement:22-55 |
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