參數(shù)資料
型號: MC68HC05P9AVDW
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, PDSO28
封裝: SOIC-28
文件頁數(shù): 133/158頁
文件大?。?/td> 3885K
代理商: MC68HC05P9AVDW
Parallel I/O Ports
76
Parallel I/O Ports
Port D
Port D is a 2-bit port with one I/O pin and one input-only pin. Port D
shares the input-only pin, PD7/TCAP, with the capture/compare timer.
PD7/TCAP is the timer input capture pin. The PD7/TCAP pin can always
be a general-purpose input, even if input capture interrupts are enabled.
Port D Data
Register (PORTD)
The port D data register contains a latch for each of the two port D pins.
PD7 and PD5 — Port D Data Bits
These read/write bits are software programmable. Data direction of
each port D pin is under the control of the corresponding bit in data
direction register D. Reset has no effect on port D data.
TCAP — Timer Capture
TCAP is the input capture pin for the timer.
$0003
Bit 7
654321
Bit 0
Read:
PD7
0
PD5
10000
Write:
Reset:
Unaffected by reset
Alternate
Function:
TCAP
= Unimplemented
Figure 38. Port D Data Register (PORTD)
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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