68HC908MR24 Datasheet, PDF (323/406 Pages) Freescale Semiconductor, Inc – Microcontrollers

Input/Output (I/O) Ports
Addr.
$0003
$0004
$0005
$0006
$0008
$0009
Register Name
Port D Data Register
(PTD)
See page 330.
Data Direction Register A
(DDRA)
See page 324.
Data Direction Register B
(DDRB)
See page 326.
Data Direction Register C
(DDRC)
See page 328.
Port E Data Register
(PTE)
See page 331.
Port F Data Register
(PTF)
See page 333.
Bit 7
6
5
4
3
2
1
Bit 0
Read: 0
PTD6 PTD5 PTD4 PTD3 PTD2 PTD1 PTD0
Write: R
R
R
R
R
R
R
R
Reset:
Unaffected by reset
Read:
DDRA7 DDRA6 DDRA5 DDRA4 DDRA3 DDRA2 DDRA1 DDRA0
Write:
Reset: 0
0
0
0
0
0
0
0
Read:
DDRB7 DDRB6 DDRB5 DDRB4 DDRB3 DDRB2 DDRB1 DDRB0
Write:
Reset: 0
0
0
0
0
0
0
0
Read: 0
Write: R
DDRC6 DDRC5 DDRC4 DDRC3 DDRC2 DDRC1 DDRC0
Reset: 0
0
0
0
0
0
0
0
Read:
PTE7
Write:
PTE6
PTE5
PTE4
PTE3
PTE2
PTE1
PTE0
Reset:
Unaffected by reset
Read: 0
Write: R
0
PTF5 PTF4 PTF3 PTF2 PTF1 PTF0
R
Reset:
Unaffected by reset
$000A
Unimplemented
$000B
Unimplemented
$000C
$000D
Data Direction Register E
(DDRE)
See page 332.
Data Direction Register F
(DDRF)
See page 334.
Read:
DDRE7 DDRE6 DDRE5 DDRE4 DDRE3 DDRE2 DDRE1 DDRE0
Write:
Reset: 0
0
0
0
0
0
0
0
Read: 0
Write: R
0
DDRF5 DDRF4 DDRF3 DDRF2 DDRF1 DDRF0
R
Reset:
0
0
0
0
0
0
R = Reserved
Figure 15-1. I/O Port Register Summary (Continued)
MC68HC908MR24 — Rev. 4.1
Freescale Semiconductor
Input/Output (I/O) Ports
Advance Information
323