The S12X family will retain the low cost, power consumption, EMC and code-size efficiency advantages currently enjoyed by users of the existing 16-bit HCS12 MCU family. Based around an enhanced HCS12 core, the S12X family is designed to deliver 2 to 5 times the performance of a 25 MHz HCS12 whilst retaining a high degree of pin and code compatibility with the HCS12. The S12X family introduces the performance boosting XGATE module. Using enhance 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. Providing up to 80MIPS of performance additional to the CPU, the XGATE can access all peripherals and the RAM block. |
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S12XA Family Members
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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)
- 16-bit HCS12X CPU
- 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
- PLL
- COP watchdog
- Real time interrupt
- Clock monitor
- Fast wake-up from STOP mode
Featured Documentation
- S12XCPUV1: S12XCPUV1 Reference Manual
- XGATECOPROCFS: XGATE Co-processor Summary Brochure
- AN2685: How to Configure and Use the XGATE on S12X Devices
- MC9S12XDP512RMV2: Data Sheet for all microcontrollers in the S12XD, S12XB and S12XA families.
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