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Bosch Semiconductors for Automotive

CY327

System basis IC for engine or transmission control units

Application & Technical Summary

CY327

System supply and communication interfaces combined in one chip.

A configurable pre-regulator keeps the ECU running until as low as 3V. A switched mode buck converter for the microcontroller core reduces the power dissipation of your ECU by up to 4W.

Product benefits

  • Integrated CAN and LIN interface
  • VDA E-gas compliant
  • 3 level Watchdog for VDA 2.0 compliance

Suitable for many microcontrollers

Switched mode μC core supply, adjustable from 0.9V to 1.525V

Technical Features

Type
System basis IC
Package

  • TQFP64_ePad
  • TQFP100_ePad

Features

  • Buck / boost pre-regulator switched mode supply for µC core voltage
  • Advanced 3 level watchdog operating range 3 V to 40 V
  • Stop counter functions
  • very quiescent current

Output voltages

  • System: 5 V / 450 mA, 3.3 V / 300 mA, 5 or 3.3 V / 250 mA
  • Core supply 0.9 – 1,525 V / 1.2 A switch-mode
  • Sensors: 3 x 5 V

Interfaces

  • SPI, 16-bit (3.3V)
  • 1 x CAN
  • 1 x LIN

Inputs

  • Ignition
  • 3 wake up pins
  • Wake up on CAN

Outputs
Main relay control: 1 x LSPS
VDD typ. [V]
14
Tj min [°C]
-40°C
Tj max [°C]
150°C

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Product information

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