EM78P451S Datasheet, PDF (6/54 Pages) ELAN Microelectronics Corp – 8-Bit Microcontroller with OTP ROM

EM78P451S
8-Bit Microcontroller with OTP ROM
12 wake-up pins.
2 open-drain pins.
2 R-option pins.
32 programmable pull-high input pins.
Packages:
• 40 pin DIP 600mil: EM78P451SP .
• 40 pin SOP 450mil: EM78P451SWM
• 44 pin QFP: EM78P451SAQ.
Four types of interrupts.
• External interrupt (/INT).
• SPI transmission completed interrupt.
• TCC overflow interrupt.
• Timer1 comparator match interrupt.
3 PIN ASSIGNMENT
Vss 1
/INT 2
DATA 3
CLK 4
P90 5
P91 6
P92/SDI 7
P93/SDO 8
P94/SCK 9
P95//SS 10
P50 11
P51 12
P52 13
P53 ¹⁴
P54 15
P55 16
P56 17
P57 18
P80 19
P81 20
40 OSCO
39 R-OSCI
38 VDD
37 P70//RESET
36 P71
35 P72
34 P67
33 P66
32 P65
31 P64
30 P63
29 P62
28 P61
27 P60
26 P87
25 P86
24 P85
23 P84
22 P83
21 P82
33 32 31 30 29 28 27 26 25 24 23
P70//RESET 34
22 P86
NC 35
21 P85
NC 36
20 P84
NC 37
19 P83
VDD 38
R-OSCI 39
OSCO 40
EM78P451AQ
18 P82
17 NC
16 P81
Vss 41
15 P80
/INT 42
14 P57
DATA 43
13 P56
CLK 44
1234567
12 P55
8 9 10 11
Fig. 1 Pin Assignment
2•
Product Specification (V1.0) 06.01.2004
(This specification is subject to change without further notice)