
MC68HC08AB16A — Rev. 2.1
Technical Data
Freescale Semiconductor
31
51 general-purpose input/output (I/O) pins:
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30 shared-function I/O pins
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5-bit keyboard wakeup port
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Selectable pullups on inputs on port D and port F
System protection features
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Optional computer operating properly (COP) reset
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Low-voltage detection with optional reset
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Illegal opcode detection with optional reset
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Illegal address detection with optional reset
64-pin quad flat pack (QFP)
Features of the CPU08 include the following:
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
1.4 MCU Block Diagram
Figure 1-1 shows the structure of the MC68HC08AB16A.