MC68HC912BD32CFU10 FREESCALE [Freescale Semiconductor, Inc], MC68HC912BD32CFU10 Datasheet - Page 61

• Manufacturer Part Number: MC68HC912BD32CFU10
• Description: Advance Information
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

DDRA — Port A Data Direction Register
PORTB — Port B Register
PORTA — Port A Register
3-bus
Single Chip
Single Chip
Expanded
Expanded
Exp Wide
Exp Wide
& Periph:
RESET:
& Periph:
RESET:
RESET:
Narrow
Narrow
DATA15/7
ADDR15
ADDR15
DATA15
DDA7
ADDR7
ADDR7
Bit 7
DATA7
Bit 7
PA7
Bit 7
PB7
0
–
–
DATA14/6
ADDR14
ADDR14
DATA14
DDA6
ADDR6
ADDR6
Bits PA[7:0] are associated with addresses ADDR[15:8] and
DATA[15:8]. When this port is not used for external addresses and data,
such as in single-chip mode, these pins can be used as general-purpose
I/O. DDRA determines the primary direction of each pin. This register is
not in the on-chip map in expanded and peripheral modes. Read and
write anytime.
This register determines the primary direction for each port A pin when
functioning as a general-purpose I/O port. DDRA is not in the on-chip
map in expanded and peripheral modes. Read and write anytime.
DATA6
PA6
PB6
6
0
6
–
6
–
Freescale Semiconductor, Inc.
For More Information On This Product,
0 = Associated pin is a high-impedance input
1 = Associated pin is an output
DATA13/5
ADDR13
ADDR13
DATA13
ADDR5
ADDR5
DDA5
DATA5
PA5
Bus Control and Input/Output
PB5
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5
0
5
–
5
–
DATA12/4
ADDR12
ADDR12
DATA12
ADDR4
ADDR4
DDA4
DATA4
PA4
PB4
4
–
4
0
4
–
DATA11/3
ADDR11
ADDR11
DATA11
ADDR3
ADDR3
DDA3
DATA3
PA3
PB3
3
–
3
0
3
–
DATA10/2
ADDR10
ADDR10
DATA10
ADDR2
ADDR2
DDA2
DATA2
PA2
PB2
2
–
2
0
2
–
Bus Control and Input/Output
MC68HC912BD32 Rev 1.0
DATA9/1
ADDR9
ADDR9
DATA9
ADDR1
ADDR1
DATA1
DDA1
PA1
PB1
1
–
1
0
1
–
DATA8/0
ADDR8
ADDR8
Registers
DATA8
ADDR0
ADDR0
DATA0
DDA0
Bit 0
PA0
$0002
$0001
Bit 0
Bit 0
PB0
$0000
–
0
–