Freescale Semiconductor, Inc.
Technical Data — MC68HC11P2
Section 4. Parallel Input/Output
4.1 Contents
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
Port A. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74
Port B. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Port C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77
Port D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
Port E . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
Port F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
Port G. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81
4.10 Port H. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .82
4.11 Internal pull-up/pull-down resistors . . . . . . . . . . . . . . . . . . .83
4.12 System configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .84
4.2 Introduction
The MC68HC11P2 has up to 54 input/output lines and 8 input-only lines,
depending on the operating mode. To enhance the I/O functions, the
data bus of this microcontroller is nonmultiplexed. The following table is
a summary of the configuration and features of each port.
MC68HC11P2 — Rev 1.0
Technical Data
Parallel Input/Output
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