IBM nec pd78p081(a2) 用户手册

IBM

209

CHAPTER 15

µ

PD78P083

15.2.2 PROM write procedure

Figure 15-2. Page Program Mode Flowchart

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