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آی سی MC33972
کاتالوگ محصول : دیتاشیت آی سی MC33972
Multiple Switch Detection Interface with Suppressed Wake-Up
The 33972 Multiple Switch Detection Interface with suppressed wake-up 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.
Features
- Designed to operate 5.5 V ≤ VPWR ≤ 26 V
- Switch input voltage range -14 V to VPWR, 40 V Max
- Interfaces directly to MPU using 3.3 V / 5.0 V SPI protocol
- Selectable wake-up on change of state
- Selectable wetting current (16 or 2.0 mA)
- 8 programmable inputs (switches to battery or ground)
- 14 switch-to-ground inputs
- Typical standby current - VPWR = 100 μA and VDD = 20 μA
- Active interrupt (INT) on change-of-switch state
| هیوندای, کیا | |
| راه انداز | |
| SSOP | |
| 32 | |
| NXP |
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