tmp89ch42 TOSHIBA Semiconductor CORPORATION, tmp89ch42 Datasheet - Page 26

• Manufacturer Part Number: tmp89ch42
• Description: 8 Bit Microcontroller Tlcs-870/c1 Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

2.2
Memory space
RB000
2.2.2
2.2.2.1
2.2.2.2
Data area
The data area stores the data to be accessed as sources and destinations of transfer and calculation instructions.
The SFR, the RAM and MaskROM are mapped in the data area.
in the data area after reset release.
The SFR is mapped to 0x0000 to 0x003F (SFR1), 0x0F00 to 0x0FFF (SFR2) and 0x0E40 to 0x0EFF (SFR3)
The RAM is mapped to 0x0040 to 0x083F in the data area after reset release.
SFR
RAM
Note:Don't access the reserved SFR.
Note:The contents of the RAM become unstable when the power is turned on and immediately after a reset
is released. To execute the program by using the RAM, transfer the program to be executed in the
initialization routine.
Figure 2-2 Memory Map in the Data Area
0x0EFF
0x0FFF
0xBFFF
0xC000
0xFFFF
0x0E40
0x0000
0x003F
0x0040
0x083F
0x0F00
0x1000
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(16384 bytes)
(2048 bytes)
0xFF is read
0xFF is read
(192 bytes)
(256 bytes)
Mask ROM
(64 bytes)
SFR1
SFR3
SFR2
RAM
TMP89CH42