MC68HC908KX2 MOTOROLA [Motorola, Inc], MC68HC908KX2 Datasheet - Page 150

• Manufacturer Part Number: MC68HC908KX2
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Input/Output (I/O) Ports
10.3 Port A
Technical Data
150
$000D
$0000
$0001
$0004
$0005
Addr.
Port A Input Pullup Enable
Data Direction Register A
Data Direction Register B
Register Name
Port A Data Register
Port B Data Register
Register (PTAPUE)
See page 151.
See page 155.
See page 152.
See page 156.
See page 154.
(DDRA)
(DDRB)
(PTA)
(PTB)
Port A is a 5-bit special function port on the MC68HC908KX8 that shares
all of its pins with the keyboard interrupt module (KBI) and the 2-channel
timer. Port A contains software programmable pullup resistors enabled
when a port pin is used as a general-function input. Port A pins are also
high-current port pins with 15-mA source/15-mA sink capabilities.
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Write:
Read:
Write:
Read:
Write:
Read:
Write:
Read:
Write:
Figure 10-1. I/O Port Register Summary
DDRB7
PTB7
Bit 7
0
0
0
0
0
0
Input/Output (I/O) Ports
= Unimplemented
DDRB6
MC68HC908KX8 • MC68HC908KX2 • MC68HC08KX8 — Rev. 1.0
PTB6
6
0
0
0
0
0
0
DDRB5
PTB5
5
0
0
0
0
0
0
PTAPUE4 PTAPUE3 PTAPUE2 PTAPUE1 PTAPUE0
Unaffected by reset
Unaffected by reset
DDRA4
DDRB4
PTA4
PTB4
4
0
0
0
DDRA3
DDRB3
PTA3
PTB3
3
0
0
0
DDRA2
DDRB2
PTA2
PTB2
2
0
0
0
DDRA1
DDRB1
PTA1
PTB1
1
0
0
0
MOTOROLA
DDRB0
DDRA0
PTA0
PTB0
Bit 0
0
0
0