PCA9670PW中文资料带有复位的Fm I²C总线远程8位I/O扩展器数据手册恩XP规格书

描述 Description

The PCA9670 provides general-purpose remote I/O expansion via the two-wirebidirectional I²C‑bus (serial clock (SCL), serial data (SDA)).
The devices consist of eight quasi-bidirectional ports, 1 MHz 30 mA drive I²C‑businterface, three hardware address inputs and a reset input operating between 2.3 V and5.5 V. 1 MHz I²C‑bus Fast‑mode Plus (Fm+) can support PWM dimming of LEDs, andhigher I²C‑bus drive 30 mA allows more devices to be on the bus without the need for busbuffers. The quasi-bidirectional port can be independently assigned as an input to monitorinterrupt status or keypads, or as an output to activate indicator devices such as LEDs.The system master can read from the input port or write to the output port through a singleregister
The low current consumption of 2.5 μA (typical, static) is great for mobile applications andthe latched output ports have 25 mA high current sink drive capability for directly drivingLEDs.
The PCA9670 has three hardware address pins and allows up to 64 of these PCA9670I/O expanders on the same I²C‑bus without the need for bus buffers, supporting up to512 I/Os (for example, 512 LEDs).
The internal Power-On Reset (POR) and active LOW hardware reset pin (RESET)initialize the I/Os as inputs with a weak internal pull-up 100 μA current source.

特性 Features

I²C‑bus to parallel port expander
1 MHz I²C‑bus interface (Fast-mode Plus I²C‑buss)
SDA with 30 mA sink capability for 4000 pF buses
Operating supply voltage 2.3 V to 5.5 V with 5.5 V tolerant I/Os held to VDD with 100 μA current source
8-bit remote I/O pins that default to inputs at power-up
Latched outputs with 25 mA sink capability for directly driving LEDs
Total package sink capability of 200 mA
Active LOW reset input
Sixty-four programmable slave addresses using three address pins
Readable device ID (manufacturer, device type, and revision)
Software reset
Low standby current (2.5 μA typical)
-40 °C to + 85 °C operation
ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22‑C101
Latch-up testing is done to JEDEC standard JESD78 which exceeds 100 mA
Packages offered: SO16, TSSOP16, HVQFN16

应用 Application

LED标志和显示
服务器
工业控制
医疗设备
PLC
蜂窝电话
赌博机
仪器和测试测量