8-bit General Purpose GT MCUs

Overview

The MC9S08GT family are 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.

Additionally, the MC9S08GT16A and MC9S08GT8A series of microcontrollers further extend the GT family to smaller memory sizes, while maintaining higher end functionality often associated with more expensive parts. MC9S08GT16A doubles the RAM of its predecessor. An additional option is offered for those customers requiring an 8 KB flash part.

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 of 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

High gain oscillator option
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 Five Programmable Channels

1 x 3 channel, 1 x 2 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
Flexible, programmable timer system

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
- Multimaster 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
Loss of clock detect (LOCD) (with option to disable for lower power consumption)

Up to 39 Input/Output (I/O) Lines

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