CD1030 - NXP

CD1030 33-channel multiple switch detection interface

The CD1030 is designed to detect the closing and opening of up to 33 switch contacts. The switch status, either open or closed, is transferred to the microprocessor unit (MCU) through a serial peripheral interface (SPI). This SMARTMOS device also features a 35-to-1 analog multiplexer for reading the input channels as analog inputs. The analog selected input .

Features

• Fully functional operation from 4.5 V to 36 V
• Full parametric operation from 6.0 V to 28 V
• Low-power mode current IBATP = 50 μA and IDDQ = 10 μA
• 33 switch detection channels
  – 21 switch-to-Ground (SG) inputs with configurable pull-up current sources
  – 12 programmable switch (SP) inputs
  – Switch-to-Ground (SG) or Switch-to-Battery (SB)
  – Operating switch input voltage range from -1.0 V to 36 V
  – Selectable wetting current (2.0, 6.0, 8.0, 10, 12, 14, 16, or 20 mA)
  – Programmable wetting operation (Pulse or continuous)
  – Selectable wake-up on change of state
• 35 to 1 Analog Multiplexer
  –.