MC33993
MC33993 is Multiple Switch Detection Interface manufactured by Motorola Semiconductor.
ARCHIVE INFORMATION ARCHIVE INFORMATION
Freescale Semiconductor Advance Information
Multiple Switch Detection Interface
Document Number: MC33993 Rev. 6, 5/2008
The 33993 Multiple Switch Detection Interface 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 22-to-1 analog multiplexer for reading inputs as analog. The analog input signal is buffered and provided on the AMUX output pin for the MCU to read.
MULTIPLE SWITCH DETECTION INTERFACE
The 33993 device has two modes of operation, Sleep and...
