Datasheet
Chapter 1 MC9S12C and MC9S12GC Device Overview (MC9S12C128)
Freescale Semiconductor MC9S12C-Family / MC9S12GC-Family 27
Rev 01.24
1.2.2 Detailed Register Map
The detailed register map of the MC9S12C128
is listed in address order below.
0x0000–0x000F MEBI Map 1 of 3 (HCS12 Multiplexed External Bus Interface)
Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0x0000 PORTA
Read:
Bit 7 6 5 4 3 2 1 Bit 0
Write:
0x0001 PORTB
Read:
Bit 7 6 5 4 3 2 1 Bit 0
Write:
0x0002 DDRA
Read:
Bit 7 6 5 4 3 2 1 Bit 0
Write:
0x0003 DDRB
Read:
Bit 7 6 5 4 3 2 1 Bit 0
Write:
0x0004 Reserved
Read: 0 0 0 0 0 0 0 0
Write:
0x0005 Reserved
Read: 0 0 0 0 0 0 0 0
Write:
0x0006 Reserved
Read: 0 0 0 0 0 0 0 0
Write:
0x0007 Reserved
Read: 0 0 0 0 0 0 0 0
Write:
0x0008 PORTE
Read:
Bit 7 6 5 4 3 2
Bit 1 Bit 0
Write:
0x0009 DDRE
Read:
Bit 7 6 5 4 3 Bit 2
00
Write:
0x000A PEAR
Read:
NOACCE
0
PIPOE NECLK LSTRE RDWE
00
Write:
0x000B MODE
Read:
MODC MODB MODA
0
IVIS
0
EMK EME
Write:
0x000C PUCR
Read:
PUPKE
00
PUPEE
00
PUPBE PUPAE
Write:
0x000D RDRIV
Read:
RDPK
00
RDPE
00
RDPB RDPA
Write:
0x000E EBICTL
Read: 0 0 0 0 0 0 0
ESTR
Write:
0x000F Reserved
Read: 0 0 0 0 0 0 0 0
Write: