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
