
TMS320F243, TMS320F241
DSP CONTROLLERS
SPRS064B – DECEMBER 1997 – REVISED FEBRUARY 1999
20
POST OFFICE BOX 1443 
 HOUSTON, TEXAS 77251–1443
memory maps (continued)
Peripheral Memory-
Mapped Registers
(System,WD, ADC,
SCI, SPI, CAN, I/O,
Interrupts)
Peripheral
Memory-Mapped
Registers
(Event Manager)
On-Chip DARAM
(B0)
 (CNF = 0)
Reserved (CNF = 1)
Mode Register
Reserved
Unused
Illegal
Illegal
0000
Interrupts
002F
0030
Hex
Program
1FFF
2000
Reserved
 (CNF = 1)
External (CNF = 0)
FEFF
FF00
0000
005F
0060
01FF
0200
02FF
0300
03FF
0400
7000
73FF
7400
743F
7440
Data
Hex
007F
0080
8000
Reserved
FFFF
7FFF
Memory-Mapped
Registers/Reserved
Addresses
On-Chip
DARAM B2
On-Chip
DARAM (B1)
§
6FFF
Illegal
FDFF
FE00
On-Chip DARAM
B0
 (CNF = 1)
External (CNF = 0)
FFFF
On-Chip FLASH memory, (8K) – if MP/MC = 0
External Program Memory       – if MP/MC = 1
When CNF = 1, addresses FE00h–FEFFh and FF00h–FFFFh are mapped to the same physical block (B0) in program-memory space. For
example, a write to FE00h will have the same effect as a write to FF00h. For simplicity, addresses FE00h–FEFFh are referred to as reserved
when CNF = 1.
When CNF = 0, addresses 0100h–01FFh and 0200h–02FFh are mapped to the same physical block (B0) in data-memory space. For example,
a write to 0100h will have the same effect as a write to 0200h. For simplicity, addresses 0100h–01FFh are referred to as reserved.
§Addresses 0300h–03FFh and 0400h–04FFh are mapped to the same physical block (B1) in data-memory space. For example, a write to 0400h
has the same effect as a write to 0300h. For simplicity, addresses 0400h–04FFh are referred to as reserved.
NOTE A: There is no external memory space for program, data, or I/O in the ’F241.
0000
FF0E
I/O
Hex
FFFF
FF10
FF0F
Figure 2. TMS320F241 Memory Map