General Description
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Timebase module
Serial communications interface module 1 (SCI)
Serial communications interface module 2 (SCI) with infrared (IR) encoder/decoder
Serial peripheral interface module (SPI)
System management bus (SMBus), version 1.0/1.1 (multi-master IIC bus)
8-channel, 10-bit analog-to-digital converter (ADC)
IRQ1 external interrupt pin with integrated pullup
IRQ2 external interrupt pin with programmable pullup
8-bit keyboard wakeup port with integrated pullup
32 general-purpose input/output (I/O) pins:
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31 shared-function I/O pins
8 LED drivers (sink)
6 × 25mA open-drain I/O with pullup
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Low-power design (fully static with stop and wait modes)
Master reset pin (with integrated pullup) and power-on reset
System protection features
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Optional computer operating properly (COP) reset, driven by internal RC oscillator
Low-voltage detection with optional reset or interrupt
Illegal opcode detection with reset
Illegal address detection with reset
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48-pin low quad flat pack (LQFP), 44-pin quad flat pack (QFP), and 42-pin shrink dual-in-line
package (SDIP)
Specific features of the MC68HC908AP64 in 42-pin SDIP are:
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30 general-purpose l/Os only
External interrupt on IRQ1 only
Features of the CPU08 include the following:
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Enhanced HC05 programming model
Extensive loop control functions
16 addressing modes (eight more than the HC05)
16-bit Index register and stack pointer
Memory-to-memory data transfers
Fast 8 × 8 multiply instruction
Fast 16/8 divide instruction
Binary-coded decimal (BCD) instructions
Optimization for controller applications
Efficient C language support
1.3 MCU Block Diagram
Figure 1-1 shows the structure of the MC68HC908AP64.
MC68HC908AP Family Data Sheet, Rev. 4
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Freescale Semiconductor
FREESCALE [ Freescale ]
