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EM78P447SBWM 参数 Datasheet PDF下载

EM78P447SBWM图片预览
型号: EM78P447SBWM
PDF下载: 下载PDF文件 查看货源
内容描述: 8位微控制器 [8-BIT MICRO-CONTROLLER]
分类和应用: 微控制器外围集成电路光电二极管可编程只读存储器
文件页数/大小: 55 页 / 1601 K
品牌: ELAN [ ELAN MICROELECTRONICS CORP ]
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EM78P447S  
OTP ROM  
3. PIN ASSIGNMENT  
P55  
P54  
1
32  
31  
30  
29  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
P56  
2
P57  
/RESET  
OSCI  
OSCO  
P77  
TCC  
VDD  
NC  
3
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
/RESET  
OSCI  
OSCO  
P77  
Vss  
TCC  
VDD  
/INT  
P50  
28  
27  
26  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
/RESET  
OSCI  
OSCO  
P77  
TCC  
VDD  
NC  
1
2
1
2
4
5
3
3
Vss  
6
Vss  
4
4
P76  
/INT  
P50  
7
/INT  
P50  
P51  
P52  
P53  
P60  
P61  
P62  
P63  
P64  
5
P76  
5
P76  
P75  
8
P51  
6
P75  
6
P75  
P74  
P51  
9
7
P74  
7
P74  
P52  
10  
11  
12  
13  
14  
15  
16  
P73  
P72  
P71  
P70  
P67  
P66  
P65  
P52  
8
8
P73  
P73  
P53  
9
9
P53  
P60  
P61  
P62  
P63  
P64  
P60  
P72  
P72  
10  
11  
12  
13  
14  
10  
11  
12  
13  
14  
P61  
P71  
P71  
P62  
P70  
P70  
P63  
P67  
P67  
P64  
Vss  
P66  
P66  
P65  
P65  
Fig. 1 Pin Assignment  
Table 1 EM78P447SAP and EM78P447SAM Pin Description  
Symbol Pin No.  
Type  
-
Function  
VDD  
2
* Power supply.  
* XTAL type: Crystal input terminal or external clock input pin.  
* RC type: RC oscillator input pin.  
* XTAL type: Output terminal for crystal oscillator or external clock input pin.  
* RC type: Instruction clock output.  
OSCI  
27  
I
I/O  
I
OSCO  
26  
* External clock signal input.  
* The real time clock/counter (with Schmitt trigger input pin) must be tied to  
VDD or VSS if not in use.  
TCC  
1
* Input pin with Schmitt trigger. If this pin remains at logic low, the controller  
will also remain in reset condition.  
/RESET  
28  
I
P50~P53 6~9  
P60~P67 10~17  
I/O  
I/O  
* P50~P53 are bi-directional I/O pins.  
* P60~P67 are bi-directional I/O pins. These can be pulled-high internally  
by software control.  
* 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.  
* External interrupt pin triggered by falling edge.  
* Ground.  
P70~P77 18~25  
I/O  
/INT  
VSS  
NC  
5
4
3
I
-
-
* No connection.  
This specification is subject to change without prior notice.  
6
06.25.2003 (V1.1)  
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