欢迎访问ic37.com |
会员登录 免费注册
发布采购

ST7920 参数 Datasheet PDF下载

ST7920图片预览
型号: ST7920
PDF下载: 下载PDF文件 查看货源
内容描述: 中国字体内置LCD控制器/驱动器 [Chinese Fonts built in LCD controller/driver]
分类和应用: 驱动器控制器
文件页数/大小: 49 页 / 694 K
品牌: SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
 浏览型号ST7920的Datasheet PDF文件第4页浏览型号ST7920的Datasheet PDF文件第5页浏览型号ST7920的Datasheet PDF文件第6页浏览型号ST7920的Datasheet PDF文件第7页浏览型号ST7920的Datasheet PDF文件第9页浏览型号ST7920的Datasheet PDF文件第10页浏览型号ST7920的Datasheet PDF文件第11页浏览型号ST7920的Datasheet PDF文件第12页  
ST7920  
Pin Description (continued)  
Name  
No.  
I/O  
Connects to  
Description  
CAP3M  
CAP1P  
CAP1M  
CAP2M  
XOFF  
34  
35  
36  
38  
32  
37  
72  
Capacitor pins for voltage doubler  
I/O  
Capacitors  
Voltage  
7V.  
O
Reserved (no connection).  
Reserved (no connection).  
Reserved (no connection).  
Voltage doubler reference voltage.  
If use internal voltage doubler, please  
make sure that:  
CAP2P  
C[33]  
O
VD2  
39  
I
Reference voltage  
3.5V or  
l
VD2  
7V.  
l
VOUT  
7V and CAP3M  
CLK  
TT1  
TT2  
4
5
6
For CGROM/HCGROM checksum.  
Refer to checksum application.  
I
Note:  
1.  
7V>=VOUT>=V0>=V1>=V2>=V3>=V4 must be maintained  
Two clock options: As shown below.  
2.  
OSC1  
OSC2  
OSC1  
OSC2  
R
Clock input  
R=33K (VDD=5.0V)  
R=18K (VDD=2.7V)  
External Resistor vs. Current  
(VDD=5V)  
External Resistor vs. Frequency  
(VDD=5V)  
800  
700  
600  
500  
400  
300  
200  
100  
0
900  
800  
700  
600  
500  
400  
300  
200  
100  
0
5
15  
25  
40  
60  
80  
100  
5
15  
25  
40  
60  
80  
100  
Resistor(K)  
Resistor(K)  
3.  
When using voltage doubler (VOUT), it is recommended that the sum of those divide resistors (R1~R5) should be larger than 20K Ohm.  
So that the voltage doubler can provide sufficient power.  
V4.0  
8/49  
2008/08/18