參數(shù)資料
型號： MC68HC05K1P
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 MHz, MICROCONTROLLER, PDIP16
封裝： PLASTIC, DIP-16
文件頁數(shù)： 118/154頁
文件大?。?/td> 1585K
代理商： MC68HC05K1P
Technical Data
MC68HC05K0 MC68HC05K1 — Rev. 2.0
Parallel Input/Output (I/O)
Technical Data
7.3 Port A
Port A is an 8-bit, general-purpose, bidirectional I/O port with these
features:
Programmable pulldown devices (mask option)
8-mA current sinking capability (pins PA7–PA4)
External interrupt capability (pins PA3–PA0) (mask option)
7.3.1 Port A Data Register
The port A data register (PORTA), shown in Figure 7-1, contains a bit
for each of the port A pins. When a port A pin is programmed to be an
output, the state of its data register bit determines the state of the output
pin. When a port A pin is programmed to be an input, reading the port A
data register returns the logic state of the pin. The port A data register
may be written to while the port is either an input or an output.
PA7–PA0 — Port A Data Bits
These read/write bits are software-programmable. Data direction of
each bit is under the control of the corresponding bit in data direction
register A. Reset has no effect on port A data.
Address:
$0000
Bit 7
654321
Bit 0
Read:
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
Write:
Reset:
Unaffected by reset
Figure 7-1. Port A Data Register (PORTA)
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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MC68HC05K3CDW 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
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