MC68HC08AS32 Datasheet, PDF (140/280 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs)

Addr.
$0007
$0008
$0009
$000C
$000D
Register Name
Data Direction Register D ^Read:
(DDRD) Write:
See page 147. _Reset:
Port E Data Register ^Read:
(PTE) Write:
See page 149. _Reset:
Port F Data Register ^Read:
(PTF) Write:
See page 151. _Reset:
Data Direction Register E ^Read:
(DDRE) Write:
See page 150. _Reset:
Data Direction Register F ^Read:
(DDRF) Write:
See page 153. _Reset:
Bit 7
0
R
0
PTE7
0
R
DDRE7
0
0
R
0
R
6
5
DDRD6 DDRD5
0
0
PTE6
PTE5
0
0
R
R
DDRE6 DDRE5
0
0
0
0
R
R
0
0
= Reserved
4
3
2
DDRD4 DDRD3 DDR2
0
0
0
PTE4
PTE3
PTE2
Unaffected by reset
0
PTF3
R
Unaffected by reset
PTF2
DDRE4 DDRE3 DDRE2
0
0
0
0
DDRF3 DDRF2
R
0
0
0
Figure 11-1. I/O Port Register Summary (Continued)
1
DDRD1
0
PTE1
PTF1
DDRE1
0
DDRF1
0
Bit 0
DDRD0
0
PTE0
PTF0
DDRE0
0
DDRF0
0
11.2 Port A
Port A is an 8-bit general-purpose bidirectional I/O port.
11.2.1 Port A Data Register
The port A data register contains a data latch for each of the eight port A pins.
Address:
Read:
Write:
Reset:
$0000
Bit 7
PTA7
6
PTA6
5
PTA5
4
3
PTA4
PTA3
Unaffected by reset
2
PTA2
1
PTA1
Bit 0
PTA0
Figure 11-2. Port A Data Register (PTA)
PTA[7:0] — Port A Data Bits
These read/write bits are software programmable. Data direction of each port A
pin is under the control of the corresponding bit in data direction register A.
Reset has no effect on port A data.
Data Sheet
140
MC68HC08AS32 — Rev. 4.1
Freescale Semiconductor