Memory
Organization
00-7F
RAM, Access it via direct addressing
SFR, Access it via direct addressing
80-FF
80-FF
indirect on-chip RAM,
Access it via indirect addressing
00-FF
00-
on-chip expanded RAM (256B),
Access it via MOVX instruction
off-chip memory, enabled by setting ERAM=1
Address Space for MPC89x53A RAM
0000 ~ Program Memory
2C00-3BFF
or 3400-3BFF
or 3800-3BFF ISP program memory.
(1KB, 2KB or 4KB )
depending on OR0[5:4]
Address Space for MPC89x53A embedded Flash memory
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
-
Bit-2
Bit-1
SB
Bit-0
ISPAS1
ISPAS0
MOVCL
LOCK
Non-volatile register OR0
7
6
5
4
3
2
1
0
FZWDTCR
OSCDN
HWBS
EN6T
Non-volatile register OR1
MEGAWIN
MPC89x53A Data Sheet
9
MEGAWIN [ MEGAWIN TECHNOLOGY CO., LTD ]
