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參數(shù)資料
| 型號(hào)： | MC68HC05P18ACP |
| 廠商： | FREESCALE SEMICONDUCTOR 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)： | 85/130頁(yè) |
| 文件大?。?/td> | 1310K |
| 代理商： | MC68HC05P18ACP |
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NON-DISCLOSURE
AGREEMENT
REQUIRED
Input/Output (I/O) Ports
Technical Data
MC68HC05P18A
Input/Output (I/O) Ports
7.5 Port C
Port C is an 8-bit bidirectional port that can share pins PC3–PC7 with the
analog-to-digital (A/D) converter subsystem. The port C data register is
located at address $0002 and its data direction register (DDR) is located
at address $0006. Reset does not affect the data registers, but clears the
DDRs, thereby setting all of the port pins to input mode. Writing a 1 to a
DDR bit sets the corresponding port pin to output mode (see
Figure 7-3). Two port C pins, PC0 and PC1, can source and sink a
higher current than a typical I/O pin. See Section 13. Electrical
Specifications regarding current specifications.
Port C may be used for general I/O applications when the A/D
subsystem is disabled. The ADON bit in the A/D status and control
register (ADSC) is used to enable/disable the A/D subsystem.
CAUTION:
Care must be exercised when using pins PC0–PC2 while the A/D
subsystem is enabled. Accidental changes to bits that affect pins
PC3–PC7 in the data or DDR registers will produce unpredictable results
in the A/D subsystem.
Figure 7-3. Port C I/O Circuitry
READ $0002
WRITE $0002
READ $0006
DATA
REGISTER BIT
I/O
PIN
OUTPUT
INTERNAL HC05
DATA BUS
RESET
(RST)
WRITE $0006
DATA DIRECTION
REGISTER BIT
HIGH CURRENT
CAPABILITY, PC0
AND PC1 ONLY
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC68HC05P18ADW | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05P18AMDW | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05P18AMP | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05P18AP | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit |
| MC68HC05P1A | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:General Release Specification |
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