MC9S12XA512CAA  Description

The MC9S12XD family will retain the low cost, power consumption, EMC, and code-size efficiency advantages currently enjoyed by users of Freescale's existing 16-Bit MC9S12 MCU Family. Based on an enhanced S12 core, the MC9S12XD family will deliver 2 to 5 times the performance of a 25-MHz S12 whilst retaining a high degree of pin and code compatibility with the S12. The MC9S12XD 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, Flash EEPROM, and I/O ports. Providing up to 80 MIPS of performance added to the CPU, the XGATE can access all peripherals, Flash EEPROM, and the RAM block.

MC9S12XA512CAA  Features

HCS12X Core

— 16-bit HCS12X CPU

– Upward compatible with MC9S12 instruction set

– Interrupt stacking and programmer’s model identical to MC9S12

– 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 coprocessor)

— Parallel processing module offloads the CPU by providing high-speed data processing and

transfer

— Data transfer between Flash EEPROM, RAM, 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