
General Description
Data Sheet
MC68HC08GP8A
20
General Description
MOTOROLA
BREAK module (BRK) to allow single breakpoint setting during
in-circuit debugging
Internal pullups on IRQ and RST to reduce customer system cost
Clock generator module with on-chip 32-kHz crystal compatible PLL
(phase-lock loop)
Up to 33 general-purpose input/output (I/O) pins, including:
–
26 shared-function I/O pins
–
Five or seven dedicated I/O pins, depending on package choice
Selectable pullups on inputs only on ports A, C, and D. Selection is on an
individual port bit basis. During output mode, pullups are disengaged.
High current 10-mA sink/10-mA source capability on all port pins
Higher current 15-mA sink/source capability on PTC0–PTC4
Timebase module with clock prescaler circuitry for eight user selectable
periodic real-time interrupts with optional active clock source during stop
mode for periodic wakeup from stop using an external 32-kHz crystal
8-bit keyboard wakeup port
5-mA maximum current injection on all port pins to maintain input protection
Available packages:
–
42-pin shrink dual-in-line package (SDIP)
–
44-pin quad flat pack (QFP)
Specific features of the MC68HC08GP16A in 42-pin SDIP are:
–
Port C is only 5 bits: PTC0–PTC4
Specific features of the MC68HC08GP16A in 44-pin QFP are:
–
Port C is 7 bits: PTC0–PTC6
1.2.2 Features of the CPU08
Features of the CPU08 include:
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 MC68HC08GP16A. Text in parentheses
within a module block indicates the module name. Text in parentheses next to a
signal indicates the module which uses the signal.
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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