s71ws256nc0bawa30 Meet Spansion Inc., s71ws256nc0bawa30 Datasheet - Page 63

• Manufacturer Part Number: s71ws256nc0bawa30
• Description: Stacked Multi-chip Product Mcp 256/512/128 Megabit 32m/16m/8m X 16 Bit Cmos 1.8 Volt-only Simultaneous Read/write, Burst-mode Flash Memory With 128/64megabit 8m/4m X 16-bit Psram.
• Manufacturer: Meet Spansion Inc.

September 15, 2005 S71WS-N_01_A4
Device returns to reading array.
PASS. Write Lock Register
Address XXXh, Data 90h
Address XXXh, Data 00h
Exit Command:
Yes
Enter Lock Register Command:
A d v a n c e
Program Lock Register Data
Address XXXh, Data A0h
Perform Polling Algorithm
Address 555h, Data 40h
(see Write Operation Status
Address 555h, Data AAh
Address 2AAh, Data 55h
Address 77h*, Data PD
Write Unlock Cycles:
(Recommended)
DQ5 = 1?
flowchart)
Wait 4 µs
Write
Done?
Figure 11.3 Lock Register Program Algorithm
No
Yes
I n f o r m a t i o n
to return to reading array.
S71WS-Nx0 Based MCPs
FAIL. Write rest command
No
XXXh = Address don’t care
* Not on future devices
Program Data (PD): See text for Lock Register
definitions
Caution:
once.
Unlock Cycle 1
Unlock Cycle 2
Error condition (Exceeded Timing Limits)
Lock register can only be progammed
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