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M50FLW080A Datenblatt(PDF) 56 Page - STMicroelectronics

Teilenummer M50FLW080A
Bauteilbeschribung  8 Mbit (13 x 64KByte Blocks 3 x 16 x 4KByte Sectors), 3V Supply Firmware Hub / Low Pin Count Flash Memory
PDF  64 Pages
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Hersteller  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M50FLW080A Datenblatt(HTML) 56 Page - STMicroelectronics

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Flowcharts and pseudo codes
M50FLW080A, M50FLW080B
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Appendix B
Flowcharts and pseudo codes
Figure 21.
Program flowchart and pseudo code
1.
A Status check of SR1 (Protected Block/Sector), SR3 (VPP invalid) and SR4 (Program Error) can be made
after each Program operation by following the correct command sequence.
2.
If an error is found, the Status Register must be cleared before further Program/Erase Controller
operations.
Write 40h or 10h
AI09092
Start
Write Address
and Data
Read Status
Register
YES
NO
SR7 = 1
YES
NO
SR3 = 0
NO
SR4 = 0
VPP Invalid
Error (1, 2)
Program
Error (1, 2)
Program command:
– Write 40h or 10h
– Write Address and Data
(memory enters read status state after
the Program 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 = 1,
– Enter the "Program error" error handler
YES
End
YES
NO
SR1 = 0
Program to Protected
Block/Sector Error (1, 2)
If SR1 = 1,
– Enter the "Program to protected
block/sector" error handler
Suspend
Suspend
Loop
NO
YES
FWH/LPC
Interface
Only



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