MC68HC708XL36 FREESCALE [Freescale Semiconductor, Inc], MC68HC708XL36 Datasheet - Page 284

• Manufacturer Part Number: MC68HC708XL36
• Description: HCMOS Microcontroller Unit
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

I/O Ports
Introduction
MC68HC708XL36
284
Data Direction Register C (DDRC)
Data Direction Register D (DDRD)
Data Direction Register A (DDRA)
Data Direction Register B (DDRB)
Port C Data Register (PORTC)
Port D Data Register (PORTD)
Port B Data Register (PORTB)
Port E Data Register (PORTE)
Port A Data Register (PORTA)
Port F Data Register (PORTF)
Register Name
NOTE:
Fifty-four bidirectional input-output (I/O) pins form eight parallel ports. All
I/O pins are programmable as inputs or outputs.
Connect any unused I/O pins to an appropriate logic level, either V
V
operation, termination reduces excess current consumption and the
possibility of electrostatic damage.
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
SS
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
Freescale Semiconductor, Inc.
. Although the I/O ports do not require termination for proper
For More Information On This Product,
Figure 1. I/O Register Summary
DDRA7
DDRB7
DDRC7
DDRD7
Bit 7
PC7
PD7
PA7
PB7
PE7
0
0
0
0
0
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= Unimplemented
DDRA6
DDRB6
DDRC6
DDRD6
PC6
PD6
PB6
PE6
PA6
6
0
0
0
0
0
I/O Ports
DDRA5
DDRB5
DDRC5
DDRD5
PC5
PD5
PB5
PE5
PF5
PA5
5
0
0
0
0
Unaffected by Reset
Unaffected by Reset
Unaffected by Reset
Unaffected by Reset
Unaffected by Reset
Unaffected by Reset
DDRA4
DDRB4
DDRC4
DDRD4
PB4
PC4
PD4
PE4
PF4
PA4
4
0
0
0
0
DDRA3
DDRB3
DDRC3
DDRD3
PB3
PC3
PD3
PE3
PF3
PA3
3
0
0
0
0
DDRA2
DDRB2
DDRC2
DDRD2
PB2
PC2
PD2
PE2
PF2
PA2
2
0
0
0
0
DDRC1
DDRD1
DDRA1
DDRB1
PB1
PC1
PD1
PE1
PF1
PA1
1
0
0
0
0
MOTOROLA
DDRC0
DDRD0
DDRA0
DDRB0
2-ports_a
Bit 0
DD
PB0
PC0
PD0
PE0
PF0
PA0
0
0
0
0
or