|
CM2915 Datasheet, PDF (1/19 Pages) Ceramate Technical – LCD Driver (19x4) with Key Scan (4x8) | |||
|
CM2915
LCD Driver (19*4) with Key Scan (4*8)
. General Description:
æ¤ IC æ¯éå° VCD/DVD LCD é¢æ¿èè¨è¨ï¼CM2221æ´å LCD driver åè½ï¼ä¸¦ç²¾ç°¡ CM2221
çæç¨ç·è·¯ï¼éå°ææ¬éä½çç®æ¨ï¼å¸æè®å®¢æ¶çç¢åæ´æ競çåã
. Features:
 工ä½é»å£ 2.4V-5.5V
 RC æ¯çªå¨ï¼always onï¼ï¼éè¦å¤æãååºå®é»é»åé»å®¹ï¼å
¶é »ççº 56.875KHZ æ
æ¯ 455KHZ resonatoræ¯çªå¨
 å¯ä»¥æ¨å 32 FUNCTION KEY å 3 å DOUBLE KEYï¼64+6 Using D7 pinï¼
 æä¾ç°¡å®ä¸²æ¥ä»é¢çµ¦ LCD ä»é¢ä½¿ç¨
 液æ¶é©
å 19 SEG/4 COMï¼1/4 dutyï¼1/3 bias
 æä¾å
§é¨ RESET ç·è·¯
. Application:
z VCD é¢æ¿æ§å¶å¨
z DVD é¢æ¿æ§å¶å¨
z é³é¿é¢æ¿æ§å¶å¨
. Pin Description
Name
R2-R1
XI
XO
ROSC
SEG18-0
COM3-COM0
SYNCB
CKWB
DI
GND
DOUT
VDD
VLCD
D7
C8-C1
AIN
R4-R3
I/O
Description
pins
I éµç¤è¼¸å
¥è
³ï¼active highï¼
2
I Resonator æ¯çªç·è·¯è
³
1
O Resonator æ¯çªç·è·¯è
³
1
I RC oscilallator æ¯çªç·è·¯è
³
1
O LCD segment output pin
19
O LCD common output pin
4
I 串æ¥è¼¸å
¥æ§å¶è
³ï¼low activeï¼æ pull high é»é» 140Kohm@5V
1
I 串æ¥è¼¸å
¥æ§å¶è
³ï¼low activeï¼æ pull high é»é» 140Kohm@5V
1
I 串æ¥è¼¸å
¥è³æè
³ï¼æ pull high é»é» 140Kohm@5V
1
P Ground pin
1
O è³æ輸åºè
³
1
P Power pin
1
P LCD power pin
1
I è³æ碼è¨å®è
³ï¼pull low 280Kohm@5Vï¼
1
I/O Column control for keyboard matrix
8
I 客æ¶ç¢¼è¨å®è
³
1
I éµç¤è¼¸å
¥è
³ï¼active high, pull low 200Kohm@5Vï¼
2
Total Pin 47
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Tel:886-3-3214525
Fax:886-3-3521052
Page 1 of 19
Email: server@ceramate.com.tw
Http: www.ceramate.com.tw
Rev 1.0 Aug.1, 2003
|
▷ |