mc68hc912bc32 Freescale Semiconductor, Inc, mc68hc912bc32 Datasheet - Page 40

• Manufacturer Part Number: mc68hc912bc32
• Description: M68hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Register Block
2.2 Registers
40
Addr.
$000C
$000D
$0000
$0001
$0002
$0003
$0004
$0007
$0008
$0009
$000A
$000B
$000E
$000F
Notes:
↓
1. Available only on MC68HC912B32 and MC68HC912BC32 devices.
2. Available only on MC68HC912B32 and MC68HC12BE32 devices.
3. Available only on MC68HC(9)12BC32 devices.
Port E Assignment Register
Register Name
Data Direction Register A
Data Direction Register B
Data Direction Register E
Reduced Drive Register
Pullup Control Register
Port A Data Register
Port B Data Register
Port E Data Register
Mode Register
See page 86.
See page 87.
See page 86.
See page 87.
See page 88.
See page 88.
See page 89.
See page 78.
See page 91.
See page 92.
Reserved
Reserved
Reserved
Reserved
(PORTA)
(PORTB)
(PORTE)
(RDRIV)
(MODE)
(DDRA)
(DDRB)
(DDRE)
(PUCR)
(PEAR)
Figure 2-1. Register Map (Sheet 1 of 19)
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Reset:
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Read:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
Write:
M68HC12B Family Data Sheet, Rev. 9.1
SMODN
NDBE
DDA7
DDB7
DDE7
Bit 7
PA7
PB7
PE7
U
U
R
R
R
R
0
0
0
0
1
0
0
0
0
0
= Unimplemented
CGMTE
MODB
DDA6
DDB6
DDE6
PA6
PB6
PE6
U
U
R
R
R
R
6
0
0
0
0
0
0
0
0
0
0
PIPOE
MODA
DDA5
DDB5
DDE5
PA5
PB5
PE5
U
U
R
R
R
R
5
0
0
0
0
0
0
0
0
0
0
NECLK
DDA4
DDB4
DDE4
ESTR
PUPE
PA4
PB4
PD4
U
U
R
R
R
R
R
4
0
0
0
0
1
1
1
0
0
= Reserved
LSTRE
DDA3
DDB3
DDE3
RDPE
PA3
PB3
PD3
IVIS
U
U
R
R
R
R
3
0
0
0
1
0
1
0
0
0
EBSWAI
RDWE
DDA2
DDB2
DDE2
PA2
PB2
PD2
U
U
R
R
R
R
2
0
0
0
0
0
0
0
0
0
0
Freescale Semiconductor
U = Unaffected
RDPB
DDA1
DDB1
PUPB
PA1
PB1
PD1
U
U
R
R
R
R
1
0
0
0
0
0
0
0
0
0
0
0
RDPA
DDA0
DDB0
PUPA
Bit 0
EME
PD0
PA0
PB0
U
U
R
R
R
R
0
0
0
0
0
0
0
1
0
0