MC34978 22-Channel Switch Detection Evaluation Kit

The KIT34978EKEVB Evaluation Board (EVB) features the MC34978 - 22 Channel Switch Detection Interface with programmable wetting current. The kit is designed to detect the closing and opening of up to 22 switch contacts. The switch status, either open or closed, is transferred to the microprocessor unit (MCU) through a serial peripheral interface (SPI). The device also features a 24-to-1 analog multiplexer for reading inputs as analog.

• MC34978 device with 22 channels switch detection and status report capability
• An onboard 16-pin interface connector for the NXP® SPI-to-USB Interface Dongle (KITUSBSPIDGLEVME)
• Status LEDs to report the status of the MC34978 Interrupt (INT) and Wake-Up lines
• Double row, 100mils SGx/SPx pin connectors for easy interface with external loads
• Direct connection to battery power with optional 5 V/3.3 V LDO for VDDQ rail supply