mc68hc908gr16 Freescale Semiconductor, Inc, mc68hc908gr16 Datasheet - Page 29

• Manufacturer Part Number: mc68hc908gr16
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
$0000
$0001
$0002
$0003
$0004
$0005
Addr.
Data Direction Register A
Data Direction Register B
Register Name
Port C Data Register
Port D Data Register
Port A Data Register
Port B Data Register
See page 124.
See page 126.
See page 128.
See page 130.
See page 124.
See page 126.
Figure 2-2. Control, Status, and Data Registers (Sheet 1 of 8)
(DDRA)
(DDRB)
(PTC)
(PTD)
(PTA)
(PTB)
1. $FFF6–$FFFD used for eight security bytes
$FFFF
$FE10
$FE1F
$FE20
$FF7D
$FF7E
$FF7F
$FFD3
$FFD4
↓
↓
↓
↓
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Read:
Read:
(1)
Write:
Write:
Write:
Write:
Write:
Write:
Figure 2-1. Memory Map (Continued)
DDRA7
DDRB7
PTD7
MC68HC908GR16 Data Sheet, Rev. 5.0
PTA7
PTB7
Bit 7
RESERVED FOR COMPATIBILITY WITH MONITOR CODE
0
0
0
FLASH BLOCK PROTECT REGISTER (FLBPR)
= Unimplemented
DDRA6
DDRB6
PTA6
PTB6
PTC6
PTD6
6
0
0
FOR A-FAMILY PART
UNIMPLEMENTED
UNIMPLEMENTED
FLASH VECTORS
MONITOR ROM
DDRA5
DDRB5
350 BYTES
16 BYTES
85 BYTES
44 BYTES
PTA5
PTB5
PTC5
PTD5
5
0
0
DDRA4
DDRB4
Unaffected by reset
Unaffected by reset
Unaffected by reset
Unaffected by reset
PTA4
PTB4
PTC4
PTD4
R
4
0
0
= Reserved
DDRA3
DDRB3
PTD3
PTA3
PTB3
PTC3
3
0
0
DDRA2
DDRB2
PTC2
PTD2
PTA2
PTB2
U = Unaffected
Input/Output (I/O) Section
2
0
0
DDRA1
DDRB1
PTA1
PTB1
PTC1
PTD1
1
0
0
DDRA0
DDRB0
PTA0
PTB0
PTC0
PTD0
Bit 0
0
0
29