參數(shù)資料
型號： T89C51RC2-RLTIM
廠商： ATMEL CORP
元件分類： 微控制器/微處理器
英文描述： 8-bit Microcontroller with 16 Kbytes/ 32 Kbytes FLASH
中文描述： 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP44
封裝： VQFP-44
文件頁數(shù)： 42/170頁
文件大?。?/td> 1927K
代理商： T89C51RC2-RLTIM
42
A/T89C51CC01
4129L–CAN–08/05
Figure 21.
Column Latches Loading Procedure
Note:
The last page address used when loading the column latch is the one used to select the
page programming address.
Programming the Flash Spaces
User
The following procedure is used to program the User space and is summarized in
Figure 22:
Load up to one page of data in the column latches from address 0000h to 7FFFh.
Save then 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.
Restore the interrupts.
Extra Row
The following procedure is used to program the Extra Row space and is summarized in
Figure 22:
Load data in the column latches from address FF80h to FFFFh.
Save then disable the interrupts.
Launch the programming by writing the data sequence 52h followed by A2h in
FCON register. This step of the procedure must be executed from FM1. The end of
the programming indicated by the FBUSY flag cleared.
The end of the programming indicated by the FBUSY flag cleared.
Restore the interrupts.
Column Latches
Loading
Data Load
DPTR = Address
ACC = Data
Exec: MOVX @DPTR, A
Last Byte
to load
Column Latches Mapping
FCON = 08h (FPS=1)
Data memory Mapping
FCON = 00h (FPS = 0)
Save and Disable IT
EA = 0
Restore IT
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