DS4520 Description
The DS4520 is a 9-bit nonvolatile (NV) I/O expander with 64 bytes of NV user memory controlled by an I2Cpatible serial interface. The DS4520 offers users a digitally programmable alternative to hardware jumpers and mechanical switches that are being used to control digital logic nodes. Furthermore, the digital state of each pin can be read through the serial interface.
DS4520 Key Features
- Programmable Replacement for Mechanical Jumpers and Switches
- Nine NV Input/Output Pins
- 64-Byte NV User Memory (EEPROM)
- I2C-patible Serial Interface
- Up to 8 Devices Can be Multidropped on the Same I2C Bus
- Open-Drain Outputs with Configurable Pullups
- Outputs Capable of Sinking 12mA
- Low Power Consumption
- Wide Operating Voltage (2.7V to 5.5V)
- Operating Temperature Range: -40°C to +85°C
DS4520 Applications
- RAM-Based FPGA Bank Switching for Multiple Profiles