M50LPW040K1 Micron Technology Inc, M50LPW040K1 Datasheet - Page 28

• Manufacturer Part Number: M50LPW040K1
• Manufacturer: Micron Technology Inc

Specifications of M50LPW040K1

• Cell Type: NOR
• Density: 4Mb
• Access Time (max): 11/50ns
• Interface Type: Parallel/Serial
• Boot Type: Top
• Address Bus: 4/11Bit
• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: 0C to 70C
• Package Type: PLCC
• Sync/async: Async/Sync
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Word Size: 8b
• Number Of Words: 512K
• Supply Current: 20mA
• Mounting: Surface Mount
• Pin Count: 32
• Lead Free Status / Rohs Status: Compliant

M50LPW040
Figure 15. Quadruple Byte Program Flowchart and Pseudo Code (A/A Mux Interface Only)
Note: 1. A Status check of b3 (V
28/36
2. If an error is found, the Status Register must be cleared before further Program/Erase Controller operations.
3. Address 1, Address 2, Address 3 and Address 4 must be consecutive addresses differing only for address bits A0 and A1.
mand 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
b7 = 1
b3 = 0
b4 = 0
Start
End
YES
YES
YES
PP
invalid) and b4 (Program Error) can be made after each Program operation by following the correct com-
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 Program/Erase
while b7 = 1
If b3 = 1, V PP invalid error:
– error handler
If b4 = 1, Program error:
– error handler
(memory enters read status state after
the Quadruple Byte Program command)
Suspend command given execute
suspend program loop
AI03982