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AT89C5130A-RDTUM датащи(PDF) 37 Page - ATMEL Corporation

номер детали AT89C5130A-RDTUM
подробное описание детали  8-bit Flash Microcontroller with Full Speed USB Device
PDF  188 Pages
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производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89C5130A-RDTUM датащи(HTML) 37 Page - ATMEL Corporation

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37
4337K–USB–04/08
AT89C5130A/31A-M
8.3.7.3
Hardware Security
The following procedure is used to read the Hardware Security space and is summarized in
Figure 8-8:
• Map the Hardware Security space by writing 04h in FCON register.
• Read the byte in Accumulator by executing MOVC A, @A+DPTR with A = 0 & DPTR =
0000h.
Figure 8-8.
Reading Procedure
8.4
Registers
Table 8-4.
FCON (S:D1h)
Flash Control Register
Reset Value = 0000 0000b
Flash Spaces Reading
Flash Spaces Mapping
FCON = 00000xx0b
Data Read
DPTR = Address
ACC = 0
Exec: MOVC A, @A+DPTR
Erase Mode
FCON = 00h
7
6
5
4
3
2
1
0
FPL3
FPL2
FPL1
FPL0
FPS
FMOD1
FMOD0
FBUSY
Bit Number
Bit
Mnemonic Description
7-4
FPL3:0
Programming Launch Command Bits
Write 5Xh followed by AXh to launch the programming according to FMOD1:0.
(see Table 8-3.)
3
FPS
Flash Map Program Space
Set to map the column latch space in the data memory space.
Clear to re-map the data memory space.
2-1
FMOD1:0
Flash Mode
See Table 8-2 or Table 8-3.
0
FBUSY
Flash Busy
Set by hardware when programming is in progress.
Clear by hardware when programming is done.
Can not be cleared by software.



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