S12XA Automotive and Industrial Microcontrollers (MCUs)

S12XA

The S12X MCU family retains the cost-effective, power consumption, electromagnetic compatibility and code-size efficiency advantages currently enjoyed by users of the existing 16-bit HCS12 MCU family.

Based on an enhanced HCS12 core, the S12X family gives you two to five times the performance of a 25 MHz HCS12 while retaining a high degree of pin and code compatibility with the HCS12.

The S12X family introduces the performance-boosting XGATE module. Using enhanced DMA functionality, this parallel processing module offloads the CPU by providing high-speed data processing and transfer between peripheral modules, RAM and I/O ports.

Product Details

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Block Diagram

S12XA Microcontroller Block Diagram

S12XA Microcontroller Block Diagram
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Features

HCS12X Core

  • 16-bit HCS12X CPU
    • Upward compatible with HCS12 instruction set
    • Interrupt stacking and programmer's model identical to HCS12
    • Instruction queue
    • Enhanced indexed addressing
    • Enhanced instruction set
  • EBI (external bus interface)
  • MMC (module mapping control)
  • INT (interrupt controller)
  • DBG (debug module to monitor HCS12X CPU and XGATE bus activity)
  • BDM (background debug mode)

XGATE

  • Peripheral co-processor
  • Parallel processing module offloads the CPU by providing high-speed data processing transfer between peripheral modules, RAM and I/O ports
  • Data transfer between flash EEPROM, peripheral modules and I/O ports

PIT (periodic interrupt timer)

  • Four timers with independent time-out periods
  • Time-out periods selectable between 1 and 224 bus clock cycles

CRG

  • Low noise/low power Pierce oscillator
  • Phase-lock look (PLL)
  • COP watchdog
  • Real-time interrupt
  • Clock monitor
  • Fast wake-up from stop mode

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