Integrated circuits, Transistor, Semiconductors Free Datasheet Search and Download Site

33975_08

  

Datasheet

Match, Like N/A
Start with N/A
End N/A
Included N/A
View Details    
33975_08 [Multiple Switch Detection Interface with Suppressed Wake-up and 32mA Wetting Current ]

other parts : 33975A_08  MC33975EKR2  MC33975EK/R2  MCZ33975EKR2  MCZ33975EK/R2  MCZ33975AEKR2  MCZ33975AEK/R2 

Freescale
Freescale Semiconductor

The 33975 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 33975 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 the switch change of state. The Sleep Mode provides low quiescent current, which makes the 33975 ideal for automotive and industrial products requiring low sleep state currents.
Improvements are a programmable interrupt timer for Sleep Mode that can be disabled, switch detection currents of 32mA and 4.0mA for switch-to-ground inputs, and an interrupt bit that can be reset.

Features
• Designed to operate from 5.5V ≤ VPWR ≤ 28V
• Switch input voltage: (33975: -14 to 38V) (33975A: -14 to 40V)
• Interfaces to microprocessor using 3.3V/5.0V SPI protocol
• Selectable wake-up on change of state
• 14 switch-to-ground inputs
• 8 programmable inputs (switches to battery or ground)
• Selectable wetting current (32mA or 4.0mA for switch-to-ground
   inputs)
• Sleep State current VPWR 100μA, Vdd 20μA
• Pb-free packaging designated by suffix code EK

View
1
Share Link : 

HOME




Language : 한국어     日本語     русский     简体中文     español
@ 2015 - 2018  [ Home ][ Privacy Policy ] [ Request Datasheet ] [ Contact Us ]