mc68hc908lb8 Freescale Semiconductor, Inc, mc68hc908lb8 Datasheet - Page 27

• Manufacturer Part Number: mc68hc908lb8
• 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 A Data Register
Port B Data Register
See page 134.
See page 136.
See page 138.
See page 135.
See page 137.
Figure 2-2. Control, Status, and Data Registers (Sheet 1 of 8)
Reserved
(DDRA)
(DDRB)
(PTC)
(PTA)
(PTB)
$FFFF
$FFDD
$FFDE
$FE20
$FF7D
$FF7E
$FF7F
$FFBF
$FFC0
$FFC1
1. Attempts to execute code from addresses in these ranges will
2. $FFF6–$FFFD used for eight security bytes
↓
↓
↓
↓
generate an illegal address reset.
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Read:
(2)
Write:
Write:
Write:
Write:
Write:
Figure 2-1. Memory Map (Continued)
DDRB7
PTB7
Bit 7
Bold
MC68HC908LB8 Data Sheet, Rev. 1
0
0
0
0
0
FLASH BLOCK PROTECT REGISTER (FLBPR)
= Unimplemented
= Buffered
INTERNAL OSCILLATOR TRIM VALUE
DDRA6
DDRB6
PTA6
PTB6
6
0
0
0
0
UNIMPLEMENTED
UNIMPLEMENTED
FLASH VECTORS
MONITOR ROM
DDRA5
DDRB5
350 BYTES
34 BYTES
PTA5
PTB5
5
0
0
0
0
U = Unaffected
DDRA4
DDRB4
Unaffected by reset
Unaffected by reset
PTA4
PTB4
R
4
0
0
0
0
Reserved
= Reserved
DDRA3
DDRB3
PTA3
PTB3
3
0
0
0
0
DDRA2
DDRB2
PTC2
PTA2
PTB2
2
0
0
0
DDRA1
DDRB1
PTA1
PTB1
PTC1
Register Section
1
0
0
0
DDRA0
DDRB0
PTA0
PTB0
PTC0
Bit 0
0
0
0
27