Freescale Semiconductor, Inc.
General Description
• Serial interfaces
– Two asynchronous serial communications interfaces (SCI)
– Inter IC bus interface (I2C)
– Synchronous serial peripheral interface (SPI)
• LIM (lite integration module)
– WCR (windowed COP watchdog, real time interrupt, clock
monitor)
– ROC (reset and clocks)
– MEBI (multiplexed external bus interface)
– MBI (internal bus interface and memory map)
– INT (interrupt control)
• Two 8-bit ports with key wake-up interrupt
• Clock generation
– Phase-locked loop clock frequency multiplier
– Limp home mode in absence of external clock
– Slow mode divider
– Low power 0.5 to 16 MHz crystal oscillator reference clock
• 112-Pin TQFP package
– Up to 66 general-purpose I/O lines, plus up to 18 input-only
lines
• 8MHz operation at 5V
• Development support
– Single-wire background debug™ mode (BDM)
– On-chip hardware breakpoints
Technical Data
MC68HC912DG128 — Rev 3.0
General Description
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