The MC9S08RC/RD/RE/RG are members of the low-cost, high-performance HCS08 Family of 8-bit microcontroller units (MCUs). All MCUs in this family use the enhanced HCS08 core and are available with a variety of modules, memory sizes, memory types, and package types.
Features of the MC9S08RC/RD/RE/RG Family of devices
HCS08 CPU (Central Processor Unit)
Object code fully upward-compatible with M68HC05 and M68HC08 Families
HC08 instruction set with added BGND instruction
Support for up to 32 interrupt/reset sources
Power-saving modes: wait plus three stops
On-Chip Memory
On-chip in-circuit programmable FLASH memory with block protection and security option
On-chip random-access memory (RAM)
Oscillator (OSC)
Low power oscillator capable of operating from crystal or resonator from 1 to 16 MHz
8 MHz internal bus frequency
Analog Comparator (ACMP1)
On-chip analog comparator with internal reference (ACMP1)
Full rail-to-rail supply operation
Option to compare to a fixed internal bandgap reference voltage
Serial Communications Interface Module (SCI1)
Full-duplex, standard non-return-to-zero (NRZ) format
Double-buffered transmitter and receiver with separate enables
Programmable 8-bit or 9-bit character length
Programmable baud rates (13-bit modulo divider)
Serial Peripheral Interface Module (SPI1)
Master or slave mode operation
Full-duplex or single-wire bidirectional option
Programmable transmit bit rate
Double-buffered transmit and receive
Serial clock phase and polarity options
Slave select output
Selectable MSB-first or LSB-first shifting
Timer/Pulse-Width Modulator (TPM1)
2-channel, 16-bit timer/pulse-width modulator (TPM1) module that can operate as a free-running counter, a modulo counter, or an up-/down-counter when the TPM is configured for center-aligned PWM
Selectable input capture, output compare, and edge-aligned or center-aligned PWM capability on each channel
Keyboard Interrupt Ports (KBI1, KBI2)
Providing 12 keyboard interrupts
Eight with falling-edge/low-level plus four with selectable polarity
KBI1 inputs can be configured for edge-only sensitivity or edge-and-level sensitivity
Carrier Modulator Timer (CMT)
Dedicated infrared output (IRO) pin
Drives IRO pin for remote control communications
Can be disconnected from IRO pin and used as output compare timer
IRO output pin has high-current sink capability
Development Support
Background debugging system (see also the Development Support chapter)
Breakpoint capability to allow single breakpoint setting during in-circuit debugging (plus two more breakpoints in on-chip debug module)
Debug module containing two comparators and nine trigger modes. Eight deep FIFO for storing change-of-flow addresses and event-only data. Debug module supports both tag and force breakpoints.
Port Pins
Eight high-current pins (limited by maximum package dissipation)
Software selectable pullups on ports when used as input. Selection is on an individual port bit basis. During output mode, pullups are disengaged.
39 general-purpose input/output (I/O) pins, depending on package selection
Package Options
28-pin plastic dual in-line package (PDIP)
28-pin small outline integrated circuit (SOIC)
32-pin low-profile quad flat package (LQFP)
44-pin low-profile quad flat package (LQFP)
48-pin quad flat package (QFN)
System Protection
Optional computer operating properly (COP) reset
Low-voltage detection with reset or interrupt
Illegal opcode detection with reset
Illegal address detection with reset (some devices don’t have illegal addresses)
