M50FLW080A STMicroelectronics, M50FLW080A Datasheet - Page 45

• Manufacturer Part Number: M50FLW080A
• Description: 8 Mbit (13 x 64KByte Blocks + 3 x 16 x 4KByte Sectors) 3V Supply Firmware Hub / Low Pin Count Flash Memory
• Manufacturer: STMicroelectronics

APPENDIX B. FLOWCHARTS AND PSEUDO CODES
Figure 22. Program Flowchart and Pseudo Code
Note: 1. A Status check of SR1 (Protected Block/Sector), SR3 (V
2. If an error is found, the Status Register must be cleared before further Program/Erase Controller operations.
FWH/LPC
eration by following the correct command sequence.
Interface
Only
Write 40h or 10h
Write Address
Read Status
and Data
Register
SR7 = 1
SR3 = 0
SR4 = 0
SR1 = 0
Start
End
YES
YES
YES
YES
NO
NO
NO
NO
Suspend
Block/Sector Error (1, 2)
Program to Protected
NO
V PP Invalid
Error (1, 2)
Error (1, 2)
Program
YES
Suspend
Loop
PP
invalid) and SR4 (Program Error) can be made after each Program op-
Program command:
– Write 40h or 10h
– Write Address and Data
do:
– Read Status Register
– If SR7=0 and a Program/Erase Suspend
If SR3 = 1,
– Enter the "V PP invalid" error handler
If SR4 = 1,
– Enter the "Program error" error handler
If SR1 = 1,
– Enter the "Program to protected
(memory enters read status state after
the Program command)
– SR7 is set to 1
– Enter suspend program loop
block/sector" error handler
command has been executed
M50FLW080A, M50FLW080B
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