NEC PD78052 - PROM Write Procedure; Page Program Mode Flowchart

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CHAPTER 26 µ PD78P054, 78P058
Start
Address = G
V
DD = 6.5 V, V PP = 12.5 V
X = 0
Latch
Address = Address + 1
Latch
Address = Address + 1
Latch
Address = Address + 1
Latch
X = X + 1
0.1-ms program pulse
Verify 4 Bytes
Pass
Address = N?
No
Pass
V
DD = 4.5 to 5.5 V, V PP = V DD
All bytes verified?
End of write
Address = Address + 1
No
Yes
X = 10?
Fail
Fail
Yes
All Pass
Defective product
Remark:
G = Start address
N = Last address of program
26.4.2 PROM write procedure
Figure 26-4. Page Program Mode Flowchart