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AN2540 bảng dữ liệu(PDF) 16 Page - STMicroelectronics

tên linh kiện AN2540
Giải thích chi tiết về linh kiện  EEPROM emulation in STR91xFxx devices
PDF  25 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN2540 bảng dữ liệu(HTML) 16 Page - STMicroelectronics

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Implementing the EEPROM emulation
AN2540 - Application note
16/25
Figure 6.
Data update flow
3.3.2
EEPROM software description
The user API function naming is the same as in the 1st method routines, the main
differences are shown in the WriteVariable flowchart given in Figure 7.
12 32
DD AA
12 45
DD AA
BC BC
AA AA
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
34
34
55 55
12 32
DD AA
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
12 32
DD AA
12 45
DD AA
BC BC
AA AA
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
Sector0 Sector1
Active sector = sector0
FF FF
FF FF
FF FF
FF FF
32 32
DD AA
22 45
DD AA
BD BD
AA AA
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
54
54
55
55
12 32
DD AA
Add var3
=1232h
Add var3
=1245h
Add var1
=BCBCh
Add var2
=6464h
Erase
sector0
Add var2 =3434h
The most recent data (Last
variable updates) are transferred
from sector0(as full sector) to
sector1 (as empty sector).
Sector0 Sector1
Active sector = sector0
Sector0 Sector1
Active sector = sector0
12
32
DD AA
12
45
DD AA
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
Sector0 Sector1
Active sector = sector0
Sector0 Sector1
Active sector = sector0
Sector0 Sector1
Active sector = sector0
Sector0 Sector1
Active sector = sector0
32 32
DD AA
22 45
DD AA
BD BD
AA AA
64 64
55 55
22 45
DD AA
BD BD
AA AA
FF FF
FF FF
FF FF
54 54
55 55
12 32
DD AA
Sector0 Sector1
Active sector = sector0
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
FF FF
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