Datasheet4U Logo Datasheet4U.com

34972 - Multiple Switch Detection Interface

Description

of each pin can be found in the Functional Pin Description section beginning on page 9.

Table 1.

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 34972 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. The Sleep mode provides low quiescent current, which makes the 34972 ideal for industrial products requiring low sleep-state currents. Thi.

📥 Download Datasheet

Datasheet preview – 34972

Datasheet Details

Part number 34972
Manufacturer NXP
File Size 1.75 MB
Description Multiple Switch Detection Interface
Datasheet download datasheet 34972 Datasheet
Additional preview pages of the 34972 datasheet.

📁 Similar Datasheet

  • 3490 - Linear Low Density Polyethylene (TAISOX)
  • 34901 - High-speed CAN Transceiver (Freescale Semiconductor)
  • 34903 - System Basis Chip - SBC (Freescale Semiconductor)
  • 34904 - System Basis Chip - SBC (Freescale Semiconductor)
  • 34905 - System Basis Chip - SBC (Freescale Semiconductor)
  • 34920 - Quad H-Bridge Motor Driver (Freescale Semiconductor)
  • 34921 - Configurable Motor Driver IC (Freescale Semiconductor)
  • 34923 - Full-Bridge PWM Motor Driver (Freescale Semiconductor)
  • 3493S - 1N3493S (ASI)
Other Datasheets by NXP
  • 34978 - 22-channel multiple switch detection interface
  • 34931 - 5.0A H-Bridge
  • 34932 - Dual 5.0A H-Bridge
  • 34933 - 1.4A Dual H-Bridge Driver

Full PDF Text Transcription

Click to expand full text
Freescale Semiconductor Technical Data Document Number: MC34972 Rev. 1.0, 9/2013 Multiple Switch Detection Interface with Suppressed Wake-up 34972 The 34972 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. The 34972 device has two modes of operation, Normal and Sleep.
Published: |