MC68HC08JK1 Datasheet, PDF (30/198 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Memory
Freescale Semiconductor, Inc.
Addr.
$0000
$0001
$0002
Register Name
Read:
Port A Data Register
(PTA)
Write:
Reset:
Read:
Port B Data Register
(PTB)
Write:
Reset:
Read:
Unimplemented Write:
Bit 7
0
PTB7
6
PTA6
PTB6
5
4
3
2
PTA5 PTA4 PTA3 PTA2
Unaffected by reset
PTB5 PTB4 PTB3 PTB2
Unaffected by reset
1
PTA1
PTB1
Bit 0
PTA0
PTB0
$0003
Read:
Port D Data Register
(PTD)
Write:
Reset:
PTD7
Read: 0
$0004
Data Direction Register A
(DDRA)
Write:
Reset: 0
Read:
$0005
Data Direction Register B
(DDRB)
Write:
Reset:
DDRB7
0
Read:
$0006
Unimplemented Write:
PTD6
DDRA6
0
DDRB6
0
PTD5
DDRA5
0
DDRB5
0
PTD4 PTD3
Unaffected by reset
DDRA4 DDRA3
0
0
DDRB4 DDRB3
0
0
PTD2
DDRA2
0
DDRB2
0
PTD1
DDRA1
0
DDRB1
0
PTD0
DDRA0
0
DDRB0
0
Read:
$0007
Data Direction Register D
(DDRD)
Write:
Reset:
DDRD7
0
$0008
↓
$0009
Read:
Unimplemented Write:
DDRD6
0
DDRD5
0
DDRD4
0
DDRD3
0
DDRD2
0
DDRD1
0
DDRD0
0
Read: 0
$000A
Port D Control Register
(PDCR)
Write:
Reset: 0
0
0
0
0
= Unimplemented
0
SLOWD7 SLOWD6 PTDPU7 PTDPU6
0
0
0
0
0
R = Reserved
Figure 2-2. Control, Status, and Data Registers (Sheet 1 of 5)
Technical Data
30
Memory
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Go to: www.freescale.com
MC68H(R)C08JL3 — Rev. 4
MOTOROLA