MCMC68HC05L16 Freescale Semiconductor, Inc, MCMC68HC05L16 Datasheet - Page 51
MCMC68HC05L16
Manufacturer Part Number
MCMC68HC05L16
Description
M68hc05 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MCMC68HC05L16.pdf
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Chapter 6
Parallel Input/Output (I/O)
6.1 Introduction
The MCU has five parallel ports:
Most of these 39 I/O pins serve multiple purposes depending on the configuration of the MCU system.
The configuration is in turn controlled by hardware mode selection as well as internal control registers.
Freescale Semiconductor
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Port A has eight I/O pins.
Port B has eight input/only pins.
Port C has eight I/O pins.
Port D has seven output-only pins.
Port E has eight output-only pins.
LATCHED OUTPUT
MC68HC05L16 • MC68HC705L16 Data Sheet, Rev. 4.1
DATA DIRECTION
REGISTER BIT
Figure 6-1. Port I/O Circuitry for One Bit
DATA BIT
INPUT
REG
BIT
INPUT
I/O
OUTPUT
PIN
I/O
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