PCF8575C集成电路（IC）的I/O扩展器规格书PDF中文资料

2 GENERAL DESCRIPTION

The device is a silicon CMOS circuit. It provides general purpose remote I/O expansion for most microcontroller families via the two-line bidirectional bus (I2C-bus).

The device consists of a 16-bit quasi-bidirectional port and an I2C-bus interface. The PCF8575C has a low current consumption and includes latched outputs with high current drive capability for directly driving LEDs.

FEATURES

• Operating supply voltage from 4.5 to 5.5 V

• Low standby current consumption of 10µA maximum

• I2C-bus to parallel port expander

• 400 kbits/s FAST I2C-bus

• Open-drain interrupt output

• 16-bit remote I/O port for the I2C-bus

• Compatible with most microcontrollers

• Latched outputs with high current drive capability for directly driving LEDs

• Address by 3 hardware address pins for use of up to 8 devices

• SSOP24 package.