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參數資料
| 型號： | MC68HC05P4A |
| 廠商： | Motorola, Inc. |
| 英文描述： | 28-pin MCU (microcontroller unit) based on the MC68HC05P4(28引腳、基于MC68HC05P4升級的8位微控制器單元) |
| 中文描述： | 28引腳單片機（微控制器）的基礎上MC68HC05P4（28引腳，基于MC68HC05P4升級的8位微控制器單元） |
| 文件頁數： | 20/102頁 |
| 文件大小： | 930K |
| 代理商： | MC68HC05P4A |
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Advance Information
MC68HC05P4A — Rev. 6.0
20
General Description
MOTOROLA
General Description
trigger as part of its input to improve noise immunity. Refer to
Section 3.
Central Processor Unit (CPU)
for more detail.
1.7.3 OSC1 and OSC2
These pins provide control input for an on-chip clock oscillator circuit. A
crystal, a ceramic resonator, a resistor/capacitor combination, or an
external signal connects to these pins and provides a system clock. A
mask option selects either a crystal/ceramic resonator or a
resistor/capacitor as the frequency determining element. The oscillator
frequency is two times the internal bus rate.
1.7.4 RESET
This active low pin is used to reset the MCU to a known startup state by
pulling RESET low. The RESET pin contains an internal Schmitt trigger
as part of its input to improve noise immunity.
1.7.5 TCMP
This pin provides an output for the output compare feature of the on-chip
timer system.
1.7.6 PA0–PA7
Port A is an 8-bit bidirectional port which does not share any of its pins
with other subsystems. The port A data register is at $0000, and the data
direction register is at $0004. Reset does not affect the data registers,
but clears the data direction registers, thereby returning the ports to
inputs. Writing a 1 to a data direction register (DDR) bit sets the
corresponding port bit to output mode. Port A has mask option enabled
pullup devices and interrupt capability by pin. For a detailed description
of I/O programming, refer to
1.8 Input/Output Programming
.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MC68HC05P4DW | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT |
| MC68HC05P4P | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT |
| MC68HC05P6 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT |
| MC68HC05P6_1 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT |
| MC68HC05P8 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT |
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