MC9S08QE128CLH                            Description

A microcontroller (MCU for microcontroller unit) is a small computer on a single VLSI integrated circuit (IC) chip. A microcontroller contains one or more CPUs (processor cores) along with memory and programmable input/output peripherals.

MC9S08QE128CLH                          Features

? 8-Bit HCS08 Central Processor Unit (CPU)

– Up to 50.33-MHz HCS08 CPU above 2.4V, 40-MHz

CPU above 2.1V, and 20-MHz CPU above 1.8V, across

temperature range

– HC08 instruction set with added BGND instruction

– Support for up to 32 interrupt/reset sources

? On-Chip Memory

– Flash read/program/erase over full operating voltage

and temperature

– Random-access memory (RAM)

– Security circuitry to prevent unauthorized access to

RAM and flash contents

? Power-Saving Modes

– Two low power stop modes; reduced power wait mode

– Peripheral clock enable register can disable clocks to

unused modules, reducing currents; allows clocks to

remain enabled to specific peripherals in stop3 mode

– Very low power external oscillator can be used in stop3

mode to provide accurate clock to active peripherals

– Very low power real time counter for use in run, wait,

and stop modes with internal and external clock sources

– 6 μs typical wake up time from stop modes

? Clock Source Options

– Oscillator (XOSC) — Loop-control Pierce oscillator;

Crystal or ceramic resonator range of 31.25 kHz to

38.4 kHz or 1 MHz to 16 MHz

– Internal Clock Source (ICS) — FLL controlled by

internal or external reference; precision trimming of

internal reference allows 0.2% resolution and 2%

deviation; supports CPU freq. from 2 to 50.33 MHz

? System Protection

– Watchdog computer operating properly (COP) reset

with option to run from dedicated 1-kHz internal clock

source or bus clock

– Low-voltage detection with reset or interrupt; selectable

trip points

– Illegal opcode detection with reset

– Flash block protection

? Development Support

– Single-wire background debug interface

– Breakpoint capability to allow single breakpoint setting

during in-circuit debugging (plus two more breakpoints)

– On-chip in-circuit emulator (ICE) debug module

containing two comparators and nine trigger modes.

MC9S08QE128CLH                      Applications

? Analog and digital sensor systems

? Data loggers

? Connectivity to USB hosts