MC68HC12 Datasheet, PDF (68/478 Pages) Motorola, Inc – The MC68HC912DT128A microcontroller unit (MCU) is a 16-bit device composed of standard on-chip peripherals including a 16-bit central processing unit

Registers
Address Bit 7
$0000 PA7
$0001 PB7
$0002 DDA7
$0003 DDB7
$0004-
$0007
0
$0008 PE7
$0009 DDE7
$000A NDBE
$000B SMODN
$000C PUPK
$000D RDPK
$000E
0
$000F
$0010
$0011
$0012
$0013
$0014
$0015
$0016
$0017
$0018
$0019
$001A
$001B
$001C
$001D
$001E
$001F
$0020
$0021
$0022
$0023
0
RAM15
REG15
EE15
ROMTST
RTIE
RTIF
CME
Bit 7
ITE6
ITD6
ITC6
ITB6
ITA6
0
IRQE
1
BKEN1
0
Bit 15
Bit 7
6
PA6
PB6
DDA6
DDB6
0
PE6
DDE6
CGMTE
MODB
PUPJ
RDPJ
0
0
RAM14
REG14
EE14
NDRF
RSWAI
0
FCME
6
ITE8
ITD8
ITC8
ITB8
ITA8
0
IRQEN
PSEL6
BKEN0
BKDBE
14
6
5
PA5
PB5
DDA5
DDB5
4
PA4
PB4
DDA4
DDB4
3
PA3
PB3
DDA3
DDB3
0
0
0
PE5
PE4
PE3
DDE5 DDE4 DDE3
PIPOE NECLK LSTRE
MODA ESTR
IVIS
PUPH PUPE
0
RDPH RDPE
0
0
0
0
0
0
0
RAM13
0
0
REG13 REG12 REG11
EE13 EE12
0
RFSTR1 RFSTR0 EXSTR1
RSBCK Reserved RTBYP
0
0
0
FCMCOP WCOP DISR
5
4
3
ITEA
ITEC
ITEE
ITDA
ITDC
ITDE
ITCA
ITCC
ITCE
ITBA
ITBC
ITBE
ITAA
ITAC
ITAE
0
0
0
DLY
0
0
PSEL5 PSEL4 PSEL3
BKPM
0
BK1ALE
BKMBH BKMBL BK1RWE
13
12
11
5
4
3
2
PA2
PB2
DDA2
DDB2
0
PE2
DDE2
RDWE
EBSWAI
0
0
0
0
0
0
0
EXSTR0
RTR2
0
CR2
2
ITF0
ITE0
ITD0
ITC0
ITB0
0
0
PSEL2
BK0ALE
BK1RW
10
2
1
PA1
PB1
DDA1
DDB1
Bit 0
PA0
PB0
DDA0
DDB0
Name
PORTA⁽¹⁾
PORTB⁽¹⁾
DDRA⁽¹⁾
DDRB⁽¹⁾
0
0
Reserved⁽³⁾
PE1
PE0
PORTE⁽²⁾
0
0
DDRE⁽²⁾
CALE DBENE _PEAR⁽³⁾
EMK
EME
MODE⁽³⁾
PUPB
PUPA
PUCR⁽³⁾
RDPB RDPA _RDRIV⁽³⁾
0
0
Reserved⁽³⁾
0
0
Reserved⁽³⁾
0
0
INITRM
0
MMSWAI INITRG
0
EEON INITEE
ROMHM ROMON MISC
RTR1 RTR0 RTICTL
0
0
RTIFLG
CR1
CR0 COPCTL
1
Bit 0 COPRST
ITF2
ITF4
ITST0
ITE2
ITE4
ITST1
ITD2
ITD4
ITST2
ITC2
ITC4
ITST3
ITB2
ITB4
ITST4
0
0
Reserved
0
0
INTCR
PSEL1
0
HPRIO
0
0
BRKCT0
BK0RWE BK0RW BRKCT1
9
Bit 8
BRKAH
1
Bit 0
BRKAL
Table 4-1. Register Map (Sheet 1 of 11)
Technical Data
68
Registers
MC68HC912DT128A — Rev 4.0
MOTOROLA