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EM78P447NAM Datasheet(PDF) 6 Page - ELAN Microelectronics Corp

Part No. EM78P447NAM
Description  8-BIT MICRO-CONTROLLER
Download  57 Pages
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Manufacturer  EMC [ELAN Microelectronics Corp]
Direct Link  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM78P447NAM Datasheet(HTML) 6 Page - ELAN Microelectronics Corp

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EM78P447N
OTP ROM
3. PIN ASSIGNMENT
TCC
VDD
NC
Vss
/INT
P50
P51
P53
P60
P61
P62
P63
P64
P52
/RESET
OSCI
OSCO
P77
P76
P75
P74
P72
P71
P70
P67
P66
P65
P73
1
2
3
4
5
6
7
8
9
10
11
12
14
13
26
25
24
23
22
21
20
19
18
17
16
15
27
28
DIP
SOP
TCC
VDD
Vss
/INT
P50
P51
P53
P60
P61
P62
P63
P64
P52
/RESET
OSCI
OSCO
P77
P76
P75
P74
P72
P71
P70
P67
P66
P65
P73
1
2
3
4
5
6
7
8
9
10
11
12
14
13
26
25
24
23
22
21
20
19
18
17
16
15
27
28
Vss
SSOP
TCC
VDD
NC
Vss
/INT
P50
P51
P53
P60
P61
P62
P63
P64
P52
/RESET
OSCI
OSCO
P77
P76
P75
P74
P72
P71
P70
P67
P66
P65
P73
1
2
3
4
5
6
7
8
9
10
11
12
14
13
26
25
24
23
22
21
20
19
18
17
29
30
27
28
P55
P54
P56
P57
15
16
31
32
DIP
SOP
Fig. 1 Pin Assignment
Table 1 EM78P447NAP and EM78P447NAM Pin Description
Symbol Pin No.
Type
Function
VDD
2
-
* Power supply.
OSCI
27
I
* XTAL type: Crystal input terminal or external clock input pin.
* RC type: RC oscillator input pin.
OSCO
26
I/O
* XTAL type: Output terminal for crystal oscillator or external clock input pin.
* RC type: Instruction clock output.
* External clock signal input.
TCC
1
I
* The real time clock/counter (with Schmitt trigger input pin) must be tied to
VDD or VSS if not in use.
/RESET
28
I
* Input pin with Schmitt trigger. If this pin remains at logic low, the controller
will also remain in reset condition.
P50~P53
6~9
I/O
* P50~P53 are bi-directional I/O pins.
P60~P67 10~17
I/O
* P60~P67 are bi-directional I/O pins. These can be pulled-high internally
by software control.
P70~P77 18~25
I/O
* P70~P77 are bi-directional I/O pins.
* P74~P75 can be pulled-high internally by software control.
* P76~P77 can have open-drain output by software control.
* P70 and P71 can also be defined as the R-option pins.
This specification is subject to change without prior notice.
10.21.2004 (V1.0)
6


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