PCA9560 is a 20-pin CMOS device that can be used to replace DIP switches and jumper systems. It has 3 presets to set the performance of processor operating voltage, deep sleep mode, and ultra-deep sleep mode.
The PCA9560 is a 20‑pin CMOS device that integrates two 6‑bit non‑volatile EEPROM registers, five hardware input pins and a 5‑channel 3‑to‑1 multiplexer with a latch. It replaces traditional DIP switches and jumpers, allowing configuration via I²C/SMBus without power‑down.
The chip operates from 3.0 V to 3.6 V, supports up to 400 kHz I²C clock, and includes ESD protection up to 2000 V HBM. It is packaged in SO‑20 or TSSOP‑20 variants and is suited for server, telecom, and networking applications where version tracking, performance monitoring, and fault diagnosis are required. This manual is written in Chinese.
| Pin count | 20 pins |
|---|---|
| EEPROM registers | 2 × 6‑bit non‑volatile registers |
| Hardware input pins | 5 pins |
| Multiplexed channels | 5 channels (3‑to‑1) |
| Operating voltage | 3.0 V – 3.6 V |
| I/O voltage range | 2.5 V – 5 V |
| I²C clock frequency | 0 – 400 kHz |
| Address pins | 2 pins, allowing 4 devices on one bus |
| ESD protection | Up to 2000 V HBM (JESD22‑A114) |
Up to four PCA9560 devices can share a single I²C/SMBus line using the two address pins.
The chip operates from 3.0 V to 3.6 V.
It contains two 6‑bit non‑volatile EEPROM registers.
Pin 1 is SCL (serial clock) and pin 2 is SDA (serial data).