
μ
PD78P4038Y
23
6.2 PROM Write Sequence
Figure 6-1. Page Program Mode Flowchart
Remark
G = Start address
N = Program end address
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
0.1 ms program pulse
X = X + 1
Latch
No
X = 10
Yes
Verify 4 bytes
Pass
Address = N
Yes
V
DD
= 4.5-5.5 V, V
PP
= V
DD
Verify all bytes
Pass
No
All pass
Write end
Fail
Defective
Address = Address + 1
Fail