M50FLW040AK1 STMicroelectronics, M50FLW040AK1 Datasheet - Page 46
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M50FLW040AK1
Manufacturer Part Number
M50FLW040AK1
Description
4 Mbit (5 x 64KByte Blocks + 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory
Manufacturer
STMicroelectronics
Datasheet
1.M50FLW040AK1.pdf
(52 pages)
- Current page: 46 of 52
- Download datasheet (454Kb)
M50FLW040A, M50FLW040B
Figure 24. Quadruple Byte Program Flowchart and Pseudo Code (A/A Mux Interface Only)
Note: 1. A Status check of SR3 (V
46/52
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.
command sequence.
Write Address 1
Write Address 2
Write Address 3
Write Address 4
Read Status
& Data 1 (3)
& Data 2 (3)
& Data 3 (3)
& Data 4 (3)
Write 30h
Register
SR7 = 1
SR3 = 0
SR4 = 0
Start
End
YES
YES
YES
PP
invalid) and SR4 (Program Error) can be made after each Program operation by following the correct
NO
NO
NO
Suspend
NO
V PP Invalid
Error (1, 2)
Error (1, 2)
Program
YES
Suspend
Loop
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)
do:
– Read Status Register
– If SR7=0 and a Program/Erase Suspend
If SR3 = 1, V PP invalid error:
– error handler
If SR4 = 1, Program error:
– error handler
(memory enters read status state after
the Quadruple Byte Program command)
– SR7 is set to 1
– Enter suspend program loop
command has been executed
AI08437B
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