UPD78P4908 Ver la hoja de datos (PDF) - NEC => Renesas Technology
Número de pieza
componentes Descripción
Fabricante
UPD78P4908 Datasheet PDF : 64 Pages
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(2) PROM programming mode
• 100-pin plastic QFP (14 × 20 mm)
µPD78P4908GF-3BA
µPD78P4908
OPEN
RESET
OPEN
VSS
VSS
OPEN
VSS
VDD
D0
D1
D2
D3
D4
D5
D6
D7
(L)
PGM
CE
100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81
1
80
2
79
3
78
4
77
5
76
6
75
7
74
8
73
9
72
10
71
11
70
12
69
13
68
14
67
15
66
16
65
17
64
18
63
19
62
20
61
21
60
22
59
23
58
24
57
25
56
26
55
27
54
28
53
29
52
30
51
31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
OPEN
VPP
OPEN
A0
A1
A2
Caution L
: Connect these pins separately to the VSS pins through 10-kΩ pull-down resistors.
VSS : To be connected to the ground.
Open : Nothing should be connected on these pins.
RESET: Set a low-level input.
A0-A16
CE
D0-D7
OE
PGM
: Address bus
: Chip enable
: Data bus
: Output enable
: Program
RESET
VDD
VPP
VSS
: Reset
: Power supply
: Programming power supply
: Ground
Data Sheet U11681EJ2V0DS00
9
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