8-bit General Purpose GB MCUs

S08GB Not Recommended for New Designs
  • This page contains information on a product that is not recommended for new designs.

The MC9S08GB family are members of the cost-effective, high-performance S08 general purpose 8-bit microcontrollers. All MCUs in the family use the enhanced S08 core and are available with a variety of modules, memory sizes, memory types and package types.

The S08 family is an extension of the HC08 family, offering extended battery life with maximum performance down to 1.8-volt, high-performance flash and innovative development support.

Block Diagram

Freescale S08GB Microcontroller Block Diagram

Freescale S08GB Microcontroller Block Diagram
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Features

8-bit HCS08 CPU Core

  • Low-power technology
    • Multiple power management modes, including 20 nA powerdown
    • Optional autowake-up from Stop 2 or Stop 3 modes with internal timer typically requires only 300 nA additional current
    • 1.8V operation
  • High performance when needed
    • 50 ns minimum instruction cycle time down to 2.1V at 20 MHz bus
    • 125 ns minimum instruction cycle time down to 1.8V at 8 MHz bus
  • C-optimized architecture with multiply and divide instructions

On-Chip Debug Interface

  • Single-wire background debug mode
  • On-chip trace buffer with nine flexible trigger modes and multiple hardware breakpoints
  • Nonintrusive emulation

Integrated Third-Generation Flash Memory

  • In-application reprogrammable
  • Self-timed, fast programming
    • Can program 8 bits in 20 µs
    • Fast Flash page erase
      • 20 ms (512B)
  • 10K write/erase cycles minimum, 100K typical
  • 15-year minimum data retention, 100 years typical
  • Internal program/erase voltage generation
  • Fine Flash granularity—512B Flash erase/1B Flash program
  • Flexible block protection and enhanced security

Internal Clock Generator

  • Programmable frequency-locked loop (FLL) generates 8 MHz to 40 MHz (for bus rates up to 20 MHz)
  • Post-FLL divider gives one of eight bus rate dividers
  • Trimmable with temperature and voltage compensation (<2 percent drift)
  • Provides multiple options for clock sources and in-application clock switching
    • 32 kHz to 16 MHz external crystal/resonator
    • Internal clock generator
    • External clock

10-bit Analog-to-Digital Converter (ADC)

  • Eight-channel ADC
  • 14 µs, 10-bit single conversion time

Timer with Eight Programmable Channels

  • Three-channel and five-channel, 16-bit timer systems
  • Each channel programmable for
    • Input capture, output compare or buffered pulse-width modulator (PWM)
    • PWM can be edge-or center-aligned
  • 16-bit free-running or up/down (CPWM) count operation

Extensive Serial Communications

  • Dual asynchronous SCIs
    • Flexible 13-bit module-based baud rate generators
    • Double-buffered receive and transmit
  • Synchronous SPI
    • Up to 5 Mbps
  • Inter-IC (I²C) bus
    • Multicontroller operation
    • 256 clock options

System Protection

  • Selectable low-voltage detect/reset at nominal 1.8V
  • Low-battery warning at nominal 2.4V or 2.1V
  • COP watchdog timer

56 Input/Output (I/O) Lines

  • Programmable pull-ups
  • High-current drivers
  • Eight keyboard interrupts
  • Controlled rise/fall times minimize noise

Documentation

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Compact List

Application Note (27)
Application Note Software (13)
Brochure (1)
Data Sheet (4)
Errata (8)
Fact Sheet (2)
Product Numbering Scheme (1)
Reference Manual (2)
Reliability and Quality Information (3)
Technical Notes (8)
User Guide (2)

Design Files

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Hardware

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Software

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