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EM78P221/2N
8-Bit Microcontroller with OTP ROM
Product Specification (V1.0) 10.19.2007 • 3
(This specification is subject to change without further notice)
3 Pin Assignment
(1) 28-Pin DIP/SOP/SSOP
P70
VSS
P67
P57
P56/TCC
P53/OSCI
P52/OSCOVDD
P81//RESET
P72/CIN+
P73/CIN-
P71/CO/INT1
P64
P65
P66
P55
P54
P50
P77/INT0
EM78P222N
1
2
3
4
5
6
7
8
9
10
28
27
26
25
24
23
22
21
12
11
18
17
20
19
P61
P62
P63
P60
P51
P74
P75
P80
14
13
16
15
P76
Fig. 3-1 EM78P222NK/AK/M/AM
(2) 24-Pin DIP/SOP/SSOP
P70
VSS
P67
P57
P56/TCC
P53/OSCI
P52/OSCOVDD
P81//RESET
P72/CIN+
P73/CIN-
P71/CO/INT1
P64
P65
P66
P55
P54
P50
P77/INT0
EM78P221N
1
2
3
4
5
6
7
8
9
10
24
23
22
21
20
19
18
17
12
11
14
13
16
15
P61
P62
P63
P60
P51
Fig. 3-2 EM78P221NK/M/AM