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M50FW080 датащи(PDF) 50 Page - STMicroelectronics

номер детали M50FW080
подробное описание детали  8 Mbit 1Mb x8, Uniform Block 3V Supply Firmware Hub Flash Memory
PDF  56 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M50FW080 датащи(HTML) 50 Page - STMicroelectronics

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Flowcharts and pseudo codes
M50FW080
50/55
Figure 19.
Quadruple Byte Program flowchart and pseudo code (A/A Mux interface
only)
1.
A Status check of 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.
3.
Address1, Address 2, Address 3 and Address 4 must be consecutive addresses differing only for address
bits A0 and A1.
AI08437B
Write Address 4
& Data 4 (3)
Read Status
Register
YES
NO
SR7 = 1
YES
NO
SR3 = 0
NO
SR4 = 0
VPP Invalid
Error (1, 2)
Program
Error (1, 2)
Quadruple Byte Program command:
– write 30h
– write Address 1 & Data 1 (3)
– write Address 2 & Data 2 (3)
– write Address 3 & Data 3 (3)
– write Address 4 & Data 4 (3)
(memory enters read status state after
the Quadruple Byte 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, VPP invalid error:
– error handler
If SR4 = 1, Program error:
– error handler
End
YES
Suspend
Suspend
Loop
NO
YES
Write 30h
Start
Write Address 1
& Data 1 (3)
Write Address 2
& Data 2 (3)
Write Address 3
& Data 3 (3)



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