EM78452
8-Bit Microcontroller
3 Pin Assignment
1
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
V ss
/IN T
O SC O
R -O SC I
VD D
P70//R ESE T
P71
2
3
D A TA
C LK
4
P 90
5
6
P72
P 91/SR D Y
P92/S D I
P93/SD O
P 94/SC K
P 95//S S
P 50
26
24
33 32 31 30
29 28 27
25
23
7
P67
P86
P85
P84
P83
P82
NC
34
35
36
37
P70//RESET
22
21
8
P66
NC
NC
9
P65
20
19
18
10
11
12
P64
NC
VDD
P63
38
39
P 51
P62
R-OSCI
17
16
15
EM78452AQ
P61
P 52
13
14
15
P81
P80
P57
P56
P55
40
41
OSCO
Vss
P60
P 53
P 54
P87
/INT
42
43
44
14
13
P 55
P 56
P 57
P 80
P 81
16
17
P86
P85
P84
P83
P82
DATA
CLK
12
11
8
9
10
1
2
3
4
5
6
7
18
19
20
Fig. 3-1a 40-pin DIP EM78452P
Fig. 3-1b 44-pin QFP EM78452AQ
Fig. 3-1 Pin Assignment
2 •
Product Specification (V1.0) 10.18.2007
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
