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參數(shù)資料
| 型號(hào)： | MC68HC05P9AVP |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP28 |
| 封裝： | PLASTIC, DIP-28 |
| 文件頁(yè)數(shù)： | 7/90頁(yè) |
| 文件大小： | 285K |
| 代理商： | MC68HC05P9AVP |
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GENERAL RELEASE SPECIFICATION
MC68HC05P9A
GENERAL DESCRIPTION
MOTOROLA
Rev. 2.0
1-5
1.5.3 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.
1.5.4 RESET
This active low pin is used to reset the MCU to a known start-up state by pulling
RESET low. The RESET pin contains an internal Schmitt trigger as part of its
input to improve noise immunity.
1.5.5 TCMP
This pin provides an output for the output compare feature of the on-chip timer
system.
1.5.6 PA0 through 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 one to a 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 1.6 Input/Output Programming.
Figure 1-3. Port A Pullup Option
PA0
VDD
DDR Bit
Normal Port
From all other Port A pins
IRQ
Schmitt
Trigger
To Interrupt
Logic
Mask Option
Circuitry
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| MC68HC05P9AP | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP28 |
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| MC68HC05P9P | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP28 |
| MC68HC05P9CDW | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC05P9DW | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT |
| MC68HC05P9P | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT |
| MC68HC05PV8 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Techinal Data - rev 1.9 |
| MC68HC05PV8A | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Techinal Data - rev 1.9 |
| MC68HC05RC16 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:General Release Specification |
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