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MC68HSC705C8ACFS Datasheet(PDF) 78 Page - Freescale Semiconductor, Inc

Part # MC68HSC705C8ACFS
Description  M68HC05 Microcontrollers
PDF  222 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MC68HSC705C8ACFS Datasheet(HTML) 78 Page - Freescale Semiconductor, Inc

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Technical Data
MC68HC705C8A — Rev. 3
78
Parallel Input/Output (I/O)
Parallel Input/Output (I/O)
7.3 Port A
Port A is an 8-bit, general-purpose, bidirectional input/output (I/O) port.
7.3.1 Port A Data Register
The port A data register (PORTA) shown in Figure 7-1 contains a data
latch for each of the eight port A pins. When a port A pin is programmed
to be an output, the state of its data register bit determines the state of
the output pin. When a port A pin is programmed to be an input, reading
the port A data register returns the logic state of the pin.
PA7–PA0 — Port A Data Bits
These read/write bits are software programmable. Data direction of
each bit is under the control of the corresponding bit in data direction
register A. Reset has no effect on port A data.
Address:
$0000
Bit 7
6
54321
Bit 0
Read:
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
Write:
Reset:
Unaffected by reset
Figure 7-1. Port A Data Register (PORTA)
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com



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