UPD78P324 Datasheet, PDF (7/80 Pages) NEC – 16-/8-Bit Single-Chip Microcomputers

(2) PROM programming mode (RESET = H, AVDD = L)
(a) 74-pin plastic QFP (20 x 20 mm); 74-pin ceramic WQFN
µPD78P324, 78P324(A)
D3
D4
D5
D6
D7
(L)
NC
(L)
VDD
(G)
74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57
56
1
55
2
54
3
53
4
52
5
51
6
50
7
49
8
48
9
47
10
46
11
45
12
44
13
43
14
42
15
41
16
40
17
39
18
38
19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
A0
(Open)
VSS
NC
(G)
(Open)
RESET
A14
A13
A12
A11
A10
A8
NC
A16
A15
PGM
CE
OE
Cautions
1. Codes marked by brackets refer to processing by pins unused in PROM programming mode.
L
: Connect to VSS individually via a resistor.
G
: Connect to VSS.
Open : Do not connect anything.
2. As a measure against noise, please connect the NC pin to VSS. (It is also possible to leave this pin
unconnected.)
7