tmp89cm42 TOSHIBA Semiconductor CORPORATION, tmp89cm42 Datasheet - Page 25

• Manufacturer Part Number: tmp89cm42
• Description: 8 Bit Microcontroller Tlcs-870/c1 Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

RB000
System control status register 4
(0x0FDF)
SYSSR4
2.2.1.2
Note:Bits 7 to 3 of SYSSR4 are read as "0".
TRANS_RAM:
Example: Program transfer (Transfer the program saved in the data area to the RAM.)
RAREAS
RVCTRS
Read/Write
Bit Symbol
After reset
The MaskROM is mapped to 0x8000 to 0xFFFF in the code area after reset release.
MaskROM
LD
LD
LD
LD
LD
INC
INC
DEC
J
Status of mapping of the RAM in the
code area
Status of mapping of the vector ad-
dress in the area
R
7
0
HL, TRANSFER_START_ADDRESS
DE, PROGRAM_START_ADDRESS
BC, BYTE_OF_PROGRAM
A, (DE)
(HL), A
HL
DE
BC
F, TRANS_RAM
-
R
6
0
-
R
5
0
-
0 :
1 :
0 :
1 :
Page 11
The enabled SYSCR3<RAREA> data is "0".
The enabled SYSCR3<RAREA> data is "1".
The enabled SYSCR3<RVCTR> data is "0".
The enabled SYSCR3<RVCTR> data is "1".
;Destination RAM address
;Source ROM address
;Number of bytes of the program to be executed -1
;Reading the program to be transferred
;Writing the program to be transferred
;Destination address increment
;Source address increment
;Have all the programs been transferred?
R
4
0
-
R
0
3
-
RVCTRS
R
2
0
RAREAS
R
1
0
TMP89CM42
(RSTDIS)
R
0
0