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Freescale delivers cost-effective, small footprint 8-bit microcontroller for automotive body electronics applications

Freescale » MC9S08SC4

Freescale Semiconductor announced today the S08SC4, the newest addition to its embedded 8-bit microcontroller (MCU) portfolio for the automotive industry. Offering 4k FLASH memory in conjunction with a highly integrated peripheral feature set in a small footprint package, the S08SC4 is ideally suited for cost sensitive and space constrained applications such as pushbutton control, simple lighting, mirror dimming and basic motor control.

Freescale S08SC4

Some of the key features include an embedded serial communications interface supporting entry level Local Interconnect Networking communication and an internal clock source eliminating the need for an external crystal, thus reducing overall system cost. In addition, the S08SC4 is pin and software compatible with the S08SG family; providing users with an easy migration path to larger memory size products should requirements change.


  • 8-Bit HCS08 Central Processor Unit (CPU)
    • Up to 40 MHz HCS08 CPU (central processor unit);
    • up to 20 MHz bus frequency
    • HC08 instruction set with added BGND instruction
  • On-Chip Memory
    • 4 KB of FLASH with read/program/erase over full operating voltage and temperature
    • 256 bytes of Random-access memory (RAM)
  • Power-Saving Modes
    • Two very low power stop modes
    • Reduced power wait mode
  • Clock Source Options
    • Oscillator (XOSC) — Loop-control Pierce oscillator; Crystal or ceramic resonator range of 32 kHz to 38.4 kHz or 1 MHz to 16 MHz
    • Internal Clock Source (ICS) — Internal clock sourcemodule containing a frequency-locked loop (FLL)controlled by internal or external reference; precisiontrimming of internal reference allows 0.2 % resolutionand 2.0 % deviation over temperature and voltage;supports bus frequencies from 2 MHz to 20 MHz.
  • System Protection
    • Watchdog computer operating properly (COP) reset with option to run from dedicated 1 kHz internal clock source or bus clock
    • Low-voltage detection with reset or interrupt; selectabletrip points
    • Illegal opcode detection with reset
    • Illegal address detection with reset
    • FLASH block protect
    • Reset on loss of clock
  • Development Support
    • Single-wire background debug interface
    • Breakpoint capability to allow single breakpoint setting during in-circuit debugging
  • Peripherals
    • SCI — Serial Communication Interface
      • Full-duplex non-return to zero (NRZ)
      • LIN master extended break generation
      • LIN slave extended break detection
      • Wake-up on active edge
    • TPMx — Two 2-channel Timer/PWM modules (TPM1 and TPM2)
      • 16-bit modulus or up/down counters
      • Input capture, output compare, buffered edge-aligned or center-aligned PWM
    • ADC — Analog to Digital Converter
      • 8-channel, 10-bit resolution
      • 2.5 μs conversion time
      • Automatic compare function
      • Temperature sensor
      • Internal bandgap reference channel
  • Input/Output
    • 12 general purpose I/O pins (GPIOs)
    • 8 interrupt pins with selectable polarity
    • Hysteresis and configurable pull-up device on all input pins; Configurable slew rate and drive strength on alloutput pins.
  • Package Options
    • 16-TSSOP
  • Operating Parameters
    • 4.5-5.5 V operation

Comprehensive development support
The S08SC4 family leverages and expands on the extensive suite of hardware and software development tools available today for the S08 families. The cost effective DEMO9S08SC4 demonstration board is available for the creation of embedded designs.The CodeWarrior Development Tool Suite and a wide range of third-party development software tools are available to help ease and accelerate application development.

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