MC68HC705C8ACFN Freescale Semiconductor, MC68HC705C8ACFN Datasheet - Page 78

• Manufacturer Part Number: MC68HC705C8ACFN
• Description: IC MCU 4MHZ 8K OTP 44-PLCC
• Manufacturer: Freescale Semiconductor
• Series: HC05r

Specifications of MC68HC705C8ACFN

• Core Processor: HC05
• Core Size: 8-Bit
• Speed: 2.1MHz
• Connectivity: SCI, SPI
• Peripherals: POR, WDT
• Number Of I /o: 24
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: OTP
• Ram Size: 304 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-PLCC
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

Parallel Input/Output (I/O)
7.3 Port A
7.3.1 Port A Data Register
Technical Data
78
Address:
Port A is an 8-bit, general-purpose, bidirectional input/output (I/O) port.
The port A data register (PORTA) shown in
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
Reset:
Read:
Write:
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.
Freescale Semiconductor, Inc.
For More Information On This Product,
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Bit 7
PA7
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Figure 7-1. Port A Data Register (PORTA)
Parallel Input/Output (I/O)
PA6
6
PA5
5
Unaffected by reset
PA4
4
PA3
3
Figure 7-1
MC68HC705C8A — Rev. 3
PA2
2
contains a data
PA1
1
MOTOROLA
Bit 0
PA0