Freescale Semiconductor, Inc.
Registers
Address
$0000
$0001
$0002
$0003
Bit 7
6
5
4
3
2
1
Bit 0
PA0
Name
PORTA(1)
PORTB(1)
DDRA(1)
DDRB(1)
PA7
PB7
PA6
PA5
PA4
PA3
PA2
PA1
PB6
PB5
PB4
PB3
PB2
PB1
PB0
DDA7
DDB7
DDA6
DDB6
DDA5
DDB5
DDA4
DDB4
DDA3
DDB3
DDA2
DDB2
DDA1
DDB1
DDA0
DDB0
$0004-
$0007
Reserved(3)
0
0
0
0
0
0
0
0
PORTE(2)
DDRE(2)
$0008
$0009
$000A
PE7
PE6
DDE6
CGMTE
MODB
PUPJ
RDPJ
0
PE5
DDE5
PIPOE
MODA
PUPH
RDPH
0
PE4
DDE4
NECLK
ESTR
PUPE
RDPE
0
PE3
DDE3
LSTRE
IVIS
0
PE2
PE1
0
PE0
0
DDE7
NDBE
DDE2
PEAR(3)
RDWE
CALE
EMK
PUPB
RDPB
0
DBENE
EME
PUPA
RDPA
0
MODE(3)
PUCR(3)
$000B SMODN
EBSWAI
$000C
$000D
$000E
PUPK
RDPK
0
0
0
0
RDRIV(3)
Reserved(3)
0
0
Reserved(3)
INITRM
INITRG
INITEE
MISC
$000F
$0010
$0011
$0012
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
RAM15
REG15
EE15
RAM14
REG14
EE14
RAM13
REG13
EE13
0
REG11
0
REG12
EE12
MMSWAI
EEON
$0013 ROMTST NDRF
RFSTR1 RFSTR0 EXSTR1 EXSTR0 ROMHM ROMON
$0014
$0015
$0016
$0017
$0018
$0019
$001A
$001B
$001C
$001D
$001E
$001F
$0020
$0021
$0022
$0023
$0024
RTIE
RTIF
CME
Bit 7
ITE6
ITD6
ITC6
ITB6
0
RSWAI
0
RSBCK Reserved RTBYP
RTR2
0
RTR1
0
RTR0
0
RTICTL
RTIFLG
COPCTL
COPRST
ITST0
0
0
0
DISR
3
FCME FCMCOP WCOP
CR2
2
CR1
1
CR0
Bit 0
ITF4
ITE4
ITD4
ITC4
0
6
ITE8
ITD8
ITC8
ITB8
0
5
ITEA
ITDA
ITCA
ITBA
0
4
ITEC
ITDC
ITCC
ITBC
0
ITEE
ITDE
ITCE
ITBE
0
ITF0
ITE0
ITD0
ITC0
0
ITF2
ITE2
ITD2
ITC2
0
ITST1
ITST2
ITST3
Reserved
Reserved
INTCR
0
0
0
0
0
0
0
0
IRQE
1
IRQEN
PSEL6
BKEN0
BKDBE
14
DLY
PSEL5
BKPM
BKMBH
13
0
0
0
0
0
PSEL4
0
PSEL3
PSEL2
PSEL1
0
0
HPRIO
BKEN1
0
BK1ALE BK0ALE
0
BRKCT0
BRKCT1
BRKAH
BRKAL
BRKDH
BKMBL BK1RWE BK1RW BK0RWE BK0RW
Bit 15
Bit 7
Bit 15
12
4
11
3
10
2
9
1
9
Bit 8
Bit 0
Bit 8
6
5
14
13
12
11
10
Table 4-1. Register Map (Sheet 1 of 10)
Technical Data
MC68HC912DG128 — Rev 3.0
Registers
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