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| 型號(hào)： | MC68HC05F8FU |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 1.8 MHz, MICROCONTROLLER, PQFP64 |
| 封裝： | PLASTIC, QFP-64 |
| 文件頁(yè)數(shù)： | 43/126頁(yè) |
| 文件大?。?/td> | 1084K |
| 代理商： | MC68HC05F8FU |
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MC68HC05F8
MOTOROLA
2-1
PIN DESCRIPTIONS
2
PIN DESCRIPTIONS
This section provides a description of the functional pins and I/O programming of the
MC68HC05F8/
MC68HC705F8 microcontroller.
2.1
Functional Pin Descriptions
PIN NAME
56-pin SDIP
PIN No.
64-pin QFP
PIN No.
DESCRIPTION
VDD, VSS
53, 52
52, 51
Power is supplied to the MCU using these two pins.VDD is power and
VSS is ground.
IRQ1
IRQ2
10
9
2
1
IRQ1 and IRQ2 are software programmable to provide two choices of
interrupt triggering sensitivity. These options are:
1) negative edge-sensitive triggering only, or
2) both negative edge-sensitive and level sensitive triggering.
RESET
34
30
The active low RESET input is not required for start-up, but can be
used to reset the MCU internal state and provide an orderly software
start-up procedure.
TCAP
49
48
The TCAP input controls the input capture feature for the on-chip
programmable free-running timer.
TCMP
48
47
The TCMP pin provides an output for the output compare feature of
the on-chip programmable free-running timer.
OSC1, OSC2
33, 32
29, 28
These pins provide connections to the on-chip oscillator. The crystal
frequency is 3.579545MHz. OSC1 may be driven by an external
oscillator if an external crystal circuit is not used.
PA0-PA7
(PA4-PA7 only)
14-11
10-3
These eight I/O lines comprise port A. The state of any pin is software
programmable. All port A lines are congured as input during power
on or external reset. Port A can also be programmed as keyboard
interrupts. PA0 to PA3 are not bonded out on the 56-pin package.
PB0-PB7
22-15
18-11
These eight I/O lines comprise port B. The state of any pin is software
programmable. All port B lines are congured as input during power
on or external reset.
PC0-PC7
5-1, 56-54
60-53
These eight I/O lines comprise port C. The state of any pin is software
programmable. All port C lines are congured as input during power
on or external reset. Each port C pins also has the ability to sink a
maximum current of 10mA with a maximum saturation of 1V.
TPG
21
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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