
Operating Modes and On-Chip Memory
Data Sheet
M68HC11E Family — Rev. 5
38
Operating Modes and On-Chip Memory
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MOTOROLA
Figure 2-6. Memory Map for MC68HC811E2
FFC0
FFFF
NORMAL
MODES
INTERRUPT
VECTORS
64-BYTE REGISTER BLOCK
256 BYTES RAM
SINGLE
CHIP
BOOTSTRAP
SPECIAL
TEST
EXT
$0000
$1000
$F800
$FFFF
0000
1000
103F
BF00
EXPANDED
F800
FFFF
BFFF
BFC0
BFFF
SPECIAL MODES
INTERRUPT
VECTORS
2048 BYTES EEPROM
BOOT
ROM
EXT
EXT
00FF
EXT
Addr.
Register Name
Bit 7
6
5
4
3
2
1
Bit 0
$1000
Port A Data Register
(PORTA)
See page 110.
Read:
Write:
Reset:
PA7
PA6
PA5
PA4
PA3
PA2
PA1
PA0
I
0
R
0
R
0
R
I
I
I
I
$1001
Reserved
R
R
R
R
R
$1002
Parallel I/O Control Register
(PIOC)
See page 115.
Read:
Write:
Reset:
Read:
Write:
Reset:
Read:
Write:
Reset:
STAF
STAI
CWOM
HNDS
OIN
PLS
EGA
INVB
0
0
0
0
0
U
1
1
$1003
Port C Data Register
(PORTC)
See page 111.
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
Indeterminate after reset
$1004
Port B Data Register
(PORTB)
See page 111.
PB7
PB6
PB5
PB4
PB3
PB2
PB1
PB0
0
0
0
0
R
0
0
0
0
= Unimplemented
= Reserved
U = Unaffected
I = Indeterminate after reset
Figure 2-7. Register and Control Bit Assignments (Sheet 1 of 6)
F
Freescale Semiconductor, Inc.
n
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