MC68HC05P1ADW FREESCALE [Freescale Semiconductor, Inc], MC68HC05P1ADW Datasheet - Page 55

• Manufacturer Part Number: MC68HC05P1ADW
• Description: General Release Specification
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

General Release Specification — MC68HC05P1A
7.1 Contents
7.2 Introduction
MC68HC05P1A
—
Rev. 3.0
7.2
7.3
7.4
7.5
7.6
7.7
In the single-chip mode, 20 bidirectional input/output (I/O) lines are
arranged as two 8-bit I/O ports (ports A and C), one 3-bit I/O port (port
B), and 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). An input-only pin is associated with port D.
Freescale Semiconductor, Inc.
For More Information On This Product,
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Port A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
Port B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
Port C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Port D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
I/O Port Programming. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
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Input/Output Ports
Section 7. Input/Output Ports
General Release Specification