參數(shù)資料
型號: MC68HC05P18A
廠商: Motorola, Inc.
英文描述: Low Cost HCMOS Microcontroller(低成本、8位HCMOS微控制器)
中文描述: 低成本HCMOS微控制器(低成本,8位HCMOS微控制器)
文件頁數(shù): 55/130頁
文件大?。?/td> 1200K
代理商: MC68HC05P18A
MC68HC05P18A
Technical Data
MOTOROLA
Input/Output (I/O) Ports
55
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Technical Data — MC68HC05P18A
Section 7. Input/Output (I/O) Ports
7.1 Contents
7.2
7.3
7.4
7.5
7.6
7.7
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Port A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
Port B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Port C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Port D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
I/O Port Programming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
7.2 Introduction
In user mode, 20 bidirectional input/output (I/O) lines are arranged as:
Two 8-bit I/O ports, port A and port C
One 3-bit I/O port, port B
One 1-bit I/O port, port D
These ports are programmable as either inputs or outputs under
software control of the data direction registers (DDRs). There is also an
input-only pin associated with port D.
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