MC9S12HZ256 Datasheet, PDF (23/692 Pages) Freescale Semiconductor, Inc – HCS12 Microcontrollers

Chapter 1 MC9S12HZ256 Device Overview
• Four stepper stall detectors (SSD)
– Full step control during return to zero
– Voltage detector and integrator / sigma delta converter circuit
– 16-bit accumulator register
– 16-bit modulus down counter
• 112-pin LQFP and 80-pin QFP packages
– 85 I/O lines with 5-V input and drive capability
– 5-V A/D converter inputs
– 8 key wake up interrupts with digital filtering and programmable rising/falling edge trigger
• Operation at 50 MHz equivalent to 25-MHz bus speed
• Development support
– Single-wire background debug™ mode (BDM)
– Debugger and on-chip hardware breakpoints
1.1.2 Modes of Operation
User modes
• Normal and emulation operating modes
– Normal single-chip mode
– Normal expanded wide mode
– Normal expanded narrow mode
– Emulation expanded wide mode
– Emulation expanded narrow mode
• Special operating mode
– Special single-chip mode with active background debug mode
Low-power modes
• Stop mode
• Pseudo stop mode
• Wait mode
MC9S12HZ256 Data Sheet, Rev. 2.04
Freescale Semiconductor
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