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TMP89FM42
RA003
21.5.2.2 How to write to the flash memory by using a support program (API) of BOOTROM
This section describes how to perform an erase and a write on the flash memory by using a support pro-
gram (API) of BOOTROM in MCU mode.
Example: Case in which a sector erase is performed on 0xE000 through 0xEFFF in the data area, and then data at
0x0100 through 0x01FF is written to 0xE000 through 0xE0FF in the data area.
.BTWrite
equ 0x1010
; Write data to the flash memory
.BTEraseSec
equ 0x1012
; Sector Erase
.BTEraseChip equ 0x1014
; Chip Erase
.BTGetRP
equ 0x1016
; Check the status of the security program
.BTSetRP
equ 0x1018
; Configure the security program
main section code abs = 0xF000
; Initial setting
LD
(FLSCR1),0x50
; Set BAREA to "1" (note)
LD
(FLSCR2),0xD5
; Reflect the FLSCR1 setting
; Sector erase process (API)
LD
A,0x0E
; Specify the area to be erased (0xE000 through 0xEFFF)
LD
C,0xD5
; Enable Code
CALL
(.BTEraseSec)
; Execute sector erase
; Write process
LD
HL,0xE000
; Flash start address (address where data is written)
LD
IY,0x0100
; RAM start address
sLOOP1:
LD
C,0x00
; Address where data is written (bit 16)
LD
WA,HL
; Address where data is written (bits 15 to 0)
LD
E,(IY)
; Data to be written
LD
(SP-),0xD5
; Enable Code
CALL
(.BTWrite)
; Write data to the flash memory (1 byte)
INC
IY
; Increment flash address
INC
HL
; Increment RAM address
CMP
L,0x00
; Finish 256-byte write?
J
NZ,sLOOP1
; Return to sLOOP1 if the number of bytes is less than 256
; End process
LD
(FLSCR1),0x40
; Set BAREA to "0"
LD
(FLSCR2),0xD5
Example:
Whether the security program is enabled or disabled is checked. If it is disabled, it is enabled.
.BTWrite
equ 0x1010
; Write data to the flash memory
.BTEraseSec
equ 0x1012
; Sector Erase
.BTEraseChip equ 0x1014
; Chip Erase
.BTGetRP
equ 0x1016
; Check the status of the security program
.BTSetRP
equ 0x1018
; Enable the security program
main section code abs = 0xF000
; Initial setting
LD
(FLSCR1),0x50
; Set BAREA to "1"
LD
(FLSCR2),0xD5
; Reflect the FLSCR1 setting
; Check the status of the security program
LD
A,0xD5
; Enable Code
LD
C,0x00
; Set 0x00 (note 1)
CALL
(.BTGetRP)
; Check the status of the security program
CMP
A,0xFF
J
NZ,sSKIP
; Go to sSKIP if the security program is enabled
; Security program enable process (API)
LD
A,0xD5
; Enable Code
LD
C,0x00
; Set 0x00 (note 1)
CALL
(.BTSetRP)
; Enable the security program
sSKIP
LD
(FLSCR1),0x40
; Set BAREA to "0"
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: ......