2 prom programming mode, Chapter 1 general – NEC PD78214 User Manual
Page 40
11
Chapter 1 General
1
1.3.2 PROM Programming Mode (P20/NMI = 12.5 V, RESET = L)
(1) 64-pin plastic shrink DIP, 64-pin plastic QUIP, 64-pin ceramic shrink DIP with window
Caution The symbols enclosed in parentheses indicate that the corresponding pins, not used in PROM programming mode, shall be handled
as follows:
L
: Connect the corresponding pin independently to V
SS
, through a 10-k
Ω resistor.
G
: Connect the corresponding pin to V
SS
.
Open : Leave the corresponding pin unconnected.
★
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
A2
A1
A0
V
DD
V
PP
A9
P20/NMI
(Open)
D0
D1
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
A3
A4
A5
A6
A7
CE
OE
RESET
(Open)
(G)
V
SS
(L)
A14
A13
A12
A11
A10
(L)
A8
D7
D6
D5
D4
D3
D2
V
SS
(L)
(L)
(Open)
(L)
(L)
(Open)
(G)
PD78P214CW
PD78P214CW
-×××
PD78P214CW(A)
PD78P214CW(A)-
×××
PD78P214DW
PD78P214GQ-36
PD78P214GQ-
×××
-36
µ
µ
µ
µ
µ
µ
µ