The DS4520 is a 9-bit I2C nonvolatile I/O expander plus memory. It offers users a digitally programmable alternative to hardware jumpers and mechanical switches that are being used to control digital logic nodes.
The DS4520 is a 9-bit nonvolatile (NV) I/O expander with 64 bytes of NV user memory controlled by an I2C-compatible serial interface. It serves as a digitally programmable alternative to hardware jumpers and mechanical switches, allowing digital states to be read and configured via the serial interface. The device features open-drain outputs capable of sinking up to 12mA and powers up in the desired state without waiting for host CPU control.
| Number of I/O Pins | Nine |
|---|---|
| User Memory Size | 64 bytes |
| Interface Type | I2C-compatible serial interface |
| Max Sink Current | 12mA |
| Operating Voltage | 2.7V to 5.5V |
| Operating Temperature Range | -40°C to +85°C |
The DS4520 features nine nonvolatile input/output pins.
The maximum SCL clock frequency is 400 kHz.