MCZ33993EWR2

Product Summary

The MCZ33993EWR2 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. The MCZ33993EWR2 device has two modes of operation, Sleep and Normal. The Sleep mode provides low quiescent current and enables the wake-up features of the device. 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. The MCZ33993EWR2 is packaged in the 32-pin wide-body SOIC, reducing circuit board area. Low quiescent current makes the MCZ33993EWR2 ideal for automotive and industrial products requiring low sleep state currents.

Parametrics

MCZ33993EWR2 absolute maximum ratings: (1)VDD Supply Voltage: -0.3 to 7.0 VDC; (2)CS, SI, SO, SCLK, INT, AMUX: -0.3 to 7.0VDC; (3)WAKE: -0.3 to 40VDC; (4)VPWR Supply Voltage: -0.3 to 50VDC; (5)Switch Input Voltage Range: -14 to 40VDC; (6)Frequency of SPI Operation (VDD = 5.0 V): 6.0MHz; (7)Storage Temperature, TSTG: -55 to 150℃; (8)Operating Case Temperature, TC: -40 to 125℃; (9)Operating Junction Temperature, TJ: -40 to 150℃.

Features

MCZ33993EWR2 features: (1)Designed to Operate 55 V≤VPWR≤26 V; (2)Switch Input Voltage Range -14 V to VPWR, 40 V Max; (3)Interfaces Directly to Microprocessor Using 33 V / 50 V SPI Protocol; (4)Selectable Wake-Up on Change of State; (5)Selectable Wetting Current (16 mA or 20 mA); (6)8 Programmable Inputs (Switches to Battery or Ground); (7)14 Switch-to-Ground Inputs; (8)VPWR Standby Current 100 μA Typical, VDD Standby Current 20 mA Typical; (9)Active Interrupt (INT) on Change-of-Switch State; (10)Pb-Free Packaging Designated by Suffix Code EW.

Diagrams