m29dw256g Numonyx, m29dw256g Datasheet - Page 25

• Manufacturer Part Number: m29dw256g
• Description: 256-mbit X16, Multiple Bank, Page, Dual Boot 3 V Supply Flash Memory
• Manufacturer: Numonyx

Figure 6.
1. PD is the programmed data (see
2. The lock register can only be programmed once.
Device returned
to Read mode
Lock register program flowchart
Write Lock Register Exit command:
Add Dont' care, Data 90h
Add Dont' care, Data 00h
Table 8: Lock register
PASS:
Enter Lock Register command set:
Program Lock Register Data:
Add Dont' care (1) , Data PDh
YES
Add Dont' care, Data A0h
Write Unlock cycles:
Add 555h, Data AAh
Add 2AAh, Data 55h
Add 555h, Data 40h
Polling algorithm
bits).
DQ5 = 1
START
Write
Done
NO
YES
NO
the device to Read mode
Unlock cycle 1
unlock cycle 2
Reset
FAIL
to return
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