Page 11
TMP89FM42
RA001
Note: Bits 7 to 3 of SYSSR4 are read as "0".
2.2.1.2
BOOTROM
The BOOTROM is not mapped in the code area or the data area after reset release.
Note 1: When the BOOTROM is not mapped in the code area, an instruction is fetched from the Flash or an
SWI instruction is fetched, depending on the capacity of the internal Flash.
Note 2: Only the first 2 Kbytes of the BOOTROM are mapped in the memory map, except in the serial PROM
mode.
Note: The flash memory control register 1 has a double-buffer structure comprised of the register FLSCR1 and a shift register.
Writing "0xD5" to the register FLSCR2 allows a register setting to be reflected and take effect in the shift register. This
means that a register setting value does not take effect until "0xD5" is written to the register FLSCR2. The value of the shift
register can be checked by reading the register FLSCRM.
System control status register 4
SYSSR4
(0x0FDF)
7
6
5
4
3
2
1
0
Bit Symbol
-
-
-
-
-
RVCTRS
RAREAS
(RSTDIS)
Read/Write
R
R
R
R
R
R
R
R
After reset
0
0
0
0
0
0
0
0
RAREAS
Status of mapping of the RAM in the
code area
0 :
1 :
The enabled SYSCR3<RAREA> data is "0".
The enabled SYSCR3<RAREA> data is "1".
RVCTRS
Status of mapping of the vector
address in the area
0 :
1 :
The enabled SYSCR3<RVCTR> data is "0".
The enabled SYSCR3<RVCTR> data is "1".
Example: Program transfer (Transfer the program saved in the data area to the RAM.)
LD
HL, TRANSFER_START_ADDRESS
; Destination RAM address
LD
DE, PROGRAM_START_ADDRESS
; Source ROM address
LD
BC, BYTE_OF_PROGRAM
; Number of bytes of the program to be executed -1
TRANS_RAM:
LD
A, (DE)
; Reading the program to be transferred
LD
(HL), A
; Writing the program to be transferred
INC
HL
; Destination address increment
INC
DE
; Source address increment
DEC
BC
; Have all the programs been transferred?
JRS
F, TRANS_RAM
Setting FLSMD<BAREA> to "1" maps the BOOTROM to 0x1000 to 0x17FF in the code area and to
0x1000 to 0x17FF in the data area. The BOOTROM can be easily written into the Flash by using the Ap-
plication Programming Interface (API) integrated in the BOOTROM.
Flash memory control register 1
FLSCR1
(0x0FD0)
7
6
5
4
3
2
1
0
Bit Symbol
(FLSMD)
BAREA
(FAREA)
(ROMSEL)
Read/Write
R/W
R/W
R/W
R/W
After reset
0
1
0
0
0
0
0
0
BAREA
Specifies mapping of the
BOOTROM in the code and data
areas
0 :
1 :
The BOOTROM is not mapped to 0x1000 to 0x17FF in the code area and
to 0x1000 to 0x17FF in the data area.
The BOOTROM is mapped to 0x1000 to 0x17FF in the code area and to
0x1000 to 0x17FF in the data area.
Summary of Contents for TLCS-870/C1 Series
Page 1: ...8 Bit Microcontroller TLCS 870 C1 Series TMP89FM42 查询TMP89FM42供应商 捷多邦 专业PCB打样工厂 24小时加急出货 ...
Page 3: ...Revision History Date Revision 2007 10 25 1 First Release 2007 11 3 2 Contents Revised ...
Page 4: ......
Page 14: ......
Page 18: ...1 3 Block Diagram TMP89FM42 1 3 Block Diagram Figure 1 2 Block Diagram ...
Page 22: ...1 4 Pin Names and Functions TMP89FM42 ...
Page 60: ...2 CPU Core 2 5 Revision History TMP89FM42 ...
Page 76: ...3 Interrupt Control Circuit 3 8 Revision History TMP89FM42 ...
Page 86: ...4 External Interrupt control circuit 4 3 Function TMP89FM42 ...
Page 102: ...7 Voltage Detection Circuit 7 5 Revision History TMP89FM42 ...
Page 126: ...8 I O Ports 8 3 I O Port Registers TMP89FM42 Note 2 i 0 to 1 ...
Page 136: ...8 I O Ports 8 5 Revision History TMP89FM42 ...
Page 142: ...9 Special Function Registers 9 3 SFR3 0x0E40 to 0x0EFF TMP89FM42 ...
Page 146: ...10 Low Power Consumption Function for Peripherals TMP89FM42 ...
Page 149: ...TMP89FM42 11 3 Revision History Rev Description RA001 Deleted SLEEP2 description ...
Page 150: ...11 Divider Output DVO 11 3 Revision History TMP89FM42 ...
Page 220: ...15 Real Time Clock RTC 15 4 Real Time Clock Operation TMP89FM42 ...
Page 250: ...16 Asynchronous Serial Interface UART 16 15 Revision History TMP89FM42 ...
Page 302: ...18 Serial Bus Interface SBI 18 7 Revision History TMP89FM42 ...
Page 338: ...21 Flash Memory 21 4 Toggle Bit D6 TMP89FM42 ...
Page 384: ...22 Serial PROM Mode 22 15 Revision History TMP89FM42 ...
Page 388: ...24 Input Output Circuit 24 1 Control Pins TMP89FM42 ...
Page 404: ...25 Electrical Characteristics 25 11 Revision History TMP89FM42 ...
Page 406: ...26 Package Dimensions TMP89FM42 ...
Page 408: ......