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ST10F268 датащи(PDF) 17 Page - STMicroelectronics

номер детали ST10F268
подробное описание детали  16-BIT MCU WITH 256K BYTE FLASH MEMORY AND 8K BYTE RAM
PDF  74 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST10F268 датащи(HTML) 17 Page - STMicroelectronics

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Programming a block of data
The following code is provided as an example to program a block of data. Flash to be programmed is from
address 01’9000h to 01’9FFEh (included). Source data (data to be copied into flash) is located in external
RAM from address 05’1000h (to 05’1FFEh, implicitly) :
; code shown below assumes that flash is mapped in segment 1
; ie. bit ROMS1 = ‘1’ in SYSCON register
; Flash must be enabled, ie. bit ROMEN = ‘1’ in SYSCON.
MOV
R0, #0AA50h
; AA5xh : Multi Word programming command
OR
R0, #01h
; Selects segment 1 in Flash memory
MOV
R1, #09000h
; First Flash Segment Offset Address
MOV
R2, #09FFEh
; Last Flash Segment Offset Address
MOV
R3, #09000h
; Source data address: use DPP2 as
; data page pointer
SCXT
DPP2,#20d
; Source is in page 20 (first page of
; segment 5): save previous DPP2 value
; and load it with source page number
MOV
R4, #050d
; 50ns is 20MHz CPU clock frequency
MOV
R7, #08000h
; R7 used for Flash trigger sequence
#define FCR 08000h
EXTS
#1, #2
; Flash can be mapped in segment 0 or 1
MOV
FCR, R7
; first part
MOV
[R7], R7
; second part
NOP
; WARNING: place 2 NOP operations after
NOP
; the Unlock sequence to avoid all possible
; pipeline conflicts in STEAK programs
POP
DPP2
; restore DPP2



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