T89C5115 ATMEL Corporation, T89C5115 Datasheet - Page 33

• Manufacturer Part Number: T89C5115
• Description: Low Pin Count 8-bit MCU with A/D Converter and 16-Kbytes of Flash Memory
• Manufacturer: ATMEL Corporation

Programming the Flash Spaces
User
Extra Row
4128A–8051–04/02
Figure 12. Column Latches Loading Procedure
Note:
The following procedure is used to program the User space and is summarized in
Figure 13:
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The following procedure is used to program the Extra Row space and is summarized in
Figure 13:
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Load up to one page of data in the column latches from address 0000h to 3FFFh.
Disable the interrupts.
Launch the programming by writing the data sequence 50h followed by A0h in
FCON register (only from FM1).
The end of the programming indicated by the FBUSY flag cleared.
Enable the interrupts.
Load data in the column latches from address FF80h to FFFFh.
Disable the interrupts.
Launch the programming by writing the data sequence 52h followed by A2h in
FCON register (only from FM1).
The end of the programming indicated by the FBUSY flag cleared.
Enable the interrupts.
The last page address used when loading the column latch is the one used to select the
page programming address.
Column Latches Mapping
Exec: MOVX @DPTR, A
Data memory Mapping
FCON = 00h (FPS = 0)
FCON = 08h (FPS=1)
Column Latches
Save & Disable IT
DPTR= Address
ACC= Data
Last Byte
Data Load
to load?
Restore IT
Loading
EA= 0
T89C5115
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