KIT34978EKEVB

KIT34978EKEVB is an 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 analogue multiplexer for reading inputs as analogue. The analogue input signal is buffered and provided on the AMUX output pin to be read by an external MCU. The MC34978 device has two modes of operation, Normal and Sleep. Normal Mode allows programming of the device and supplies switch contacts with pull-up or pull-down current as it monitors switch change-of-state, while the sleep mode provide switch status detection with maximum power saving. KIT34978EKEVB can be controlled through a USB/SPI dongle (KITUSBSPIDGLEVME) connected to the PC’s USB port.

• An onboard 16-pin interface connector for the NXP SPI-to-USB interface dongle (KITUSBSPIDGLEVME)
• Double row, 100 mils SGx/SPx pin connectors for easy interface with external loads
• Direct connection to battery power with optional 5V/3.3V LDO for VDDQ rail supply
• Status LEDs to report the status of the MC34978 Interrupt (INT) and wake-up lines