The MC9S12XD256CAL is a 16-bit Microcontroller based on enhanced HCS12X CPU (40MHz bus) with CISC architecture operates at a maximum frequency of 80MHz. The device incorporates 256kB internal flash, 14kB internal RAM, 4kB EEPROM, 16-channel 10-bit A/D converter and 91 general-purpose I/O pins. This device also features peripherals like one inter-integrated circuit (IIC) bus module, three multi-scalable controller area networks (MSCAN) CAN 2.0 A/B software compatible modules, four serial communications interface (SCI) and three serial peripheral interface modules (SPI). The MC9S12XD family features the performance boosting XGATE co-processor. The XGATE, which is programmable in C language, has an instruction set which is optimized for data movement, logic and bit manipulation instructions. It runs at twice the bus frequency of the S12X and off-loads the CPU by providing high speed data transfer between any peripheral module, RAM and I/O ports.
Upward compatible with MC9S12 instruction set
Interrupt stacking and programmer"s model identical to MC9S12
Instruction queue
Enhanced indexed addressing
Enhanced instruction set
External bus interface (EBI)
Module mapping control (MMC)
Interrupt controller (INT)
Debug module to monitor HCS12X CPU and XGATE bus activity
Background debug mode (BDM)
Periodic interrupt timer (PIT)
Clock and reset generator (CRG)
Low noise/low power Pierce oscillator
Enhanced capture timer - 16-bit main counter with 7-bit prescaler
8 PWM (pulse-width modulator) channels
On-chip voltage regulator
Low-voltage detect (LVD) with low-voltage interrupt (LVI)
