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M50FLW040A датащи(PDF) 49 Page - STMicroelectronics

номер детали M50FLW040A
подробное описание детали  4 Mbit (5 x 64KByte Blocks 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory
PDF  52 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M50FLW040A датащи(HTML) 49 Page - STMicroelectronics

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M50FLW040A, M50FLW040B
Figure 27. Sector/Block Erase Flowchart and Pseudo Code
Note: 1. If an error is found, the Status Register must be cleared before further Program/Erase Controller operations.
Write 20h/32h
AI08424B
Start
Write Block
Address and D0h
Read Status
Register
YES
NO
SR7 = 1
YES
NO
SR3 = 0
NO
SR4, SR5 = 0
VPP Invalid
Error (1)
Command
Sequence Error (1)
Block Erase command:
– Write 20h/32h
– Write block Address and D0h
(memory enters read Status Register after
the Block Erase command)
do:
– Read Status Register
– If SR7=0 and a Program/Erase Suspend
command has been executed
– SR7 is set to 1
– Enter suspend program loop
If SR3 = 1,
– Enter the "VPP invalid" error handler
If SR4, SR5 = 1,
– Enter the "Command sequence"error handler
YES
NO
SR5 = 0
Erase Error (1)
YES
NO
Suspend
Suspend
Loop
If SR5 = 1,
– Enter the "Erase Error" error handler
End
YES
NO
SR1 = 0
Erase to Protected
Block Error (1)
If SR1 = 1,
– Enter the "Erase to protected block"
error handler
YES
FWH/LPC
Interface
Only



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