CERAMATE CM2915

CM2915
LCD Driver (19*4) with Key Scan (4*8)
. General Description:
此 IC 是針對 VCD/DVD LCD 面板而設計,CM2221整合 LCD driver 功能,並精簡 CM2221
的應用線路,達到成本降低的目標,希望讓客戶的產品更有競爭力。
. Features:
— 工作電壓 2.4V-5.5V
,需要外掛㆒個固定電阻和電容,其頻率為 56.875KHZ 或
— RC 振盪器(always on)
是 455KHZ resonator振盪器
— 可以推動 32 FUNCTION KEY 和 3 個 DOUBLE KEY(64+6 Using D7 pin)
— 提供簡單串接介面給 LCD 介面使用
— 液晶驅動 19 SEG/4 COM,1/4 duty,1/3 bias
— 提供內部 RESET 線路
. Application:
z
z
z
VCD 面板控制器
DVD 面板控制器
音響面板控制器
. Pin Description
Name
R2-R1
XI
XO
ROSC
SEG18-0
COM3-COM0
SYNCB
CKWB
DI
GND
DOUT
VDD
VLCD
D7
I/O
I
I
O
I
O
O
I
I
I
P
O
P
P
I
Description
鍵盤輸入腳(active high)
Resonator 振盪線路腳
Resonator 振盪線路腳
RC oscilallator 振盪線路腳
LCD segment output pin
LCD common output pin
串接輸入控制腳,low active,有 pull high 電阻 [email protected]
串接輸入控制腳,low active,有 pull high 電阻 [email protected]
串接輸入資料腳,有 pull high 電阻 [email protected]
Ground pin
資料輸出腳
Power pin
LCD power pin
資料碼設定腳(pull low [email protected])
C8-C1
AIN
R4-R3
I/O Column control for keyboard matrix
I 客戶碼設定腳
I 鍵盤輸入腳(active high, pull low [email protected])
Total Pin
pins
2
1
1
1
19
4
1
1
1
1
1
1
1
1
8
1
2
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
Email: [email protected]
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 1 of 19
Rev 1.0 Aug.1, 2003
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CM2915
LCD Driver (19*4) with Key Scan (4*8)
. Pin Assignment
1
47
36
3
4
5
6
13
NO.
NAME
X
1
R2
-710
2
R1
3
25
Y
NO.
NAME
X
Y
650
17
SEG7
-230
-710
517.5
18
SEG6
XI
-710
402.5
19
4
XO
-462.2
287.5
5
ROSC
-710
6
SEG18
7
RLCD-C
NO.
NAME
X
Y
-650
33
DOUT
710
287.5
-115
-650
34
VDD
710
402.5
SEG5
0
-650
35
VLCD
710
517.5
20
SEG4
115
-650
36
D7
710
650
287.5
21
SEG3
230
-650
37
C8
575
650
-710
172.5
22
SEG2
345
-650
38
C7
460
650
SEG17
-710
57.5
23
SEG1
460
-650
39
C6
345
650
8
SEG16
-710
-57.5
24
SEG0
575
-650
40
C5
230
650
9
SEG15
-710
-172.5
25
COM3
710
-650
41
C4
115
650
10
SEG14
-710
-287.5
26
COM2
710
-517.5
42
C3
0
650
11
SEG13
-710
-402.5
27
COM1
710
-402.5
43
C2
-115
650
12
SEG12
-710
-517.5
28
COM0
710
-287.5
44
C1
-230
650
13
SEG11
-710
-650
29
SYNCB
710
-172.5
45
AIN
-345
650
14
SEG10
-575
-650
30
CKWB
710
-57.5
46
R4
-460
650
15
SEG9
-460
-650
31
DI
710
57.5
47
R3
-575
650
16
SEG8
-345
-650
32
VSS
710
172.5
Chip size : 1540*1650um
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
Http: www.ceramate.com.tw
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CM2915
LCD Driver (19*4) with Key Scan (4*8)
. AC / DC Characteristics
1
Absolutely max. ratings
ITEM
Operating Temperature
Storage Temperature
Supply Voltage
Voltage to input terminal
2
RATING
-20℃- +70℃
-50℃- +125℃
5.5
Vss-0.3 to Vdd+0.3
UNIT
℃
℃
V
V
D.C. Characteristics
Symbol
Item
Operating voltage
Power consumption
current
Input low voltage for
input pin
Input high voltage for
input pin
RC oscillator
start-up voltage
RC oscillator
sustain voltage
DOUT source current
DOUT sink current
3
SYMBOL
Top
Tsto
VDD
Vin
Condition
min.
typ.
Max.
unit
2.4
5
400
5.5
800
V
uA
0
0.3VDD
V
VIH1
0.7VDD
VDD
V
VST
2.7
V
VSU
2.4
V
VDD
IOPR System clock at 56.875Khz RC
oscillator, LCD on, no load, @5V
VIL1
IIROH
IIROL
VDD=5V, VOH=4.5V
VDD=5V, VOL=0.5V
6
6
Condition
RC oscillator @5v
1/4 duty
@5V,Clock duty 50%
@5V
min.
12
12
mA
mA
A.C. Characteristics
Item
Symbol
System clock
fSYS
LCD frame frequency FLCD
FCKWB
串行控制 CKWB
串行控制 SYNCB tSYNCB
(Reset pulse width of
high state)
typ. Max.
56.875
55.5
500
100
unit
KHz
HZ
KHz
ns
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
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CM2915
LCD Driver (19*4) with Key Scan (4*8)
. Block Diagram
LCD RAM
LCD
DRIVER
Serial
Interface
Control
Circuit
RC
Oscillator
DATA
OUT
CODE
SETTING
BIAS
CIRCUIT
KEY
SCAN
RLCD-2
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
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CM2915
LCD Driver (19*4) with Key Scan (4*8)
. Function Description
1
LCD 控制格式表
控制碼
功能
前置碼
Mode Code
指令
寫入
1
1
00
010
功能
控制碼
0-C7C6C5C4--C3C2C1C0
0-0010—0001
位址碼
資料碼
0-C7C6C5C4--C3C2C1C0
A4A3A2A1A0
B0B1B2B3
功能描述
Initial
State
V
RC 振盪器不給 LCD driver 用& LCD 偏
壓電路 OFF
0-0010—0011
x
RC 振盪器提供給 LCD driver 用
0-0010—0101
V
液晶顯
LCD 偏壓電路 OFF
示控制
0-0010—0111
x
LCD 偏壓電路 ON
系統控制』碼只是控制內部
Note: 此 IC 的 Oscillator 是㆒直振盪的,以㆖『系統控制
clock 要不要供
系統控制
給 LCD driver 的線路使用。
系統控
制
2
LCD RAM 位置
A4A3A2 COM3 COM2 COM1 COM0 A4A3A2 COM3 COM2 COM1 COM0
A1A0
A1A0
Bit3
Bit2
Bit1
Bit0
Bit3
Bit2
Bit1
Bit0
00H
SEG0
10H
SEG9
01H
11H
02H
SEG1
12H
SEG10
03H
13H
04H
SEG2
14H
SEG11
05H
15H
06H
SEG3
16H
SEG12
07H
17H
08H
SEG4.
18H
SEG13.
09H
19H
0AH
SEG5
1AH
SEG14
0BH
1BH
0CH
SEG6
1CH
SEG15
0DH
1DH
SEG16
0EH
SEG7
1EH
SEG17
0FH
SEG8
1FH
SEG18
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
Http: www.ceramate.com.tw
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CM2915
LCD Driver (19*4) with Key Scan (4*8)
3
LCD 串列控制格式
A. 寫入格式
功能
寫入
前置碼
1
Mode Code
010
位址碼
A4A3A2A1A0
資料碼
B0B1B2B3
分段寫入:
1
0 10
A4A3A2A1A0
B0B1B2B3
0 10
A4A3A2A1A0
B0B1B2B3
1
010
A4A3A2A1A0
B0..
連續寫入:
1
B0B1B2B3
B0B1B2B3
B0B1B2B3
B. 控制格式
Mode Code
功能
前置碼
指令
1
控制碼
00
0-C7C6C5C4--C3C2C1C0
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
Http: www.ceramate.com.tw
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CM2915
LCD Driver (19*4) with Key Scan (4*8)
分段控制格式:
1
00
0-C7C6C5C4-C3C2C1C0
1
00
0-C7C6C5C4-C3C2C1C0
0-C7C6C5C4-C3C2C1C0
0-C7C6C5C40-C3C2C1C0
連續控制格式:
1
00
0-C7C6C5.…
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
Http: www.ceramate.com.tw
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CM2915
LCD Driver (19*4) with Key Scan (4*8)
4
The keyboard form :
R1
R2
R3
R4
5
C1
C2
C3
C4
C5
C6
C7
C8
K11
K21
K31
K41
K12
K22
K32
K42
K13
K23
K33
K43
K14
K15
K25
K35
K45
K16
K26
K36
K46
K17
K27
K37
K47
K18
K28
K38
K48
K24
K34
K44
Transmission code
A. 同 CM2221,但是沒有 38Khz carrier 的 Data (Data only)
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
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CM2915
LCD Driver (19*4) with Key Scan (4*8)
B. Pulse Position Modulation
The transmission codes employ the PPM ( Pulse Position Modulation ) method to represent
their two logic states by bit-0 ( 1.12 ms ) and bit-1 ( 2.24 ms ) :
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
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CM2915
LCD Driver (19*4) with Key Scan (4*8)
6
To set the custom codes ( A0 - - - A15 )
The algorithm rule of the custom codes ( A0 - - - A15 ) can be selected by mask option,and the user can
choose the CM2915-1 or CM2915-2。
A.
The CM2915-1 custom code
The value of ROM1 (8 bits) & ROM2 (8 bits) are both “ 00H “,and it is decided by one
mask layer 。The A0 - - A7 are set by logical OR between the switches (S0 - - S7) and
ROM1。The A8 - - A15 equal some bits be inverted of A0 - - A7,the inversion are decided by logical
OR between the switches (S8 - - S15) and ROM2。
For example :
CM2915-1
AIN
C2
C1
200K
200K
S8
S9
S0
1N4148
C6
C5
200K
200K
200K
200K
S10
S11
S12
S13
S1
1N4148
C4
C3
S3
S2
1N4148
1N4148
1N4148
1 : Switch close
200K
200K
S15
S14
S5
S4
C8
C7
S7
S6
1N4148
1N4148
1N4148
0 : Switch open
RLCD-4
External switch S0 - - - S15 : →
S0 - - S7
0 1 0 1 0 1 0 0
S8 - - S15
1 1 0 0 0 1 0 0
On chip ROM1,ROM2 : →
ROM1
0 0 0 0 0 0 0 0
ROM2
0 0 0 0 0 0 0 0
A0 - - A7 : →
(S0 - - S7) OR ROM1
0 1 0 1 0 1 0 0
(S8 - - S15) OR ROM2
1 1 0 0 0 1 0 0
x x ↓ ↓ ↓ x ↓ ↓
A8’ - - A15’ : →
1 : non-inversion
0 : inversion
A8 - - A15 : →
Custom codes A0 - - - A15 : →
A0 A1
-
-
-
- A5
- A2B A3B A4B
-
-
- A6B A7B
0 1 1 0 1 1 1 1
A0 - - A7
0 1 0 1 0 1 0 0
A8 - - A15
0 1 1 0 1 1 1 1
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
Http: www.ceramate.com.tw
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CM2915
LCD Driver (19*4) with Key Scan (4*8)
B. The CM2915-2 custom code
In this case,the 28 bits on chip MASK ROM ( ROM2 & ROM3-0,ROM3-1,ROM3-2 and
ROM3-3 ) is available and it is decided by one mask layer。The value of ROM2 is “ 00H “ and the
value of ROM3 is show below “ ROM3 option table “。The A0 - - A2 are set by S0 - - S7 ( “ A0 - - A2
option table “ )。The A3 - - A7 are set by S14 & S15( “ ROM3 option table “ )。The A8 - - A15 equal
some bits be inverted of A0 - - A7 and the inversion are decided by logical OR between the switches
S8 - - S13 and ROM2。
A0 - - A2 option table
A0 A1 A2
S0 = 1
0 0 0
S1 = 1
1 0 0
S2 = 1
0 1 0
S3 = 1
1 1 0
S4 = 1
0 0 1
S5 = 1
1 0 1
S6 = 1
0 1 1
S7 = 1
1 1 1
S14 S15
0
0
0
1
1
0
1
1
ROM3 option table
A3 A4 A5 A6 A7
0 0
0
0 0
1 1
0
0 1
0 0
0
0 1
1 0
1
1 1
ROM3
ROM3-0
ROM3-1
ROM3-2
ROM3-3
S0 - - S7 are closed must only one.
Note : priority S7 > - - - > S0 ( A0 - - A2 option table )
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
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CM2915
LCD Driver (19*4) with Key Scan (4*8)
For example :
CM2915-2
AIN
C2
C1
200K
200K
S8
S9
S0
1N4148
C6
C5
200K
200K
200K
200K
S10
S11
S12
S13
S1
1N4148
C4
C3
S3
S2
1N4148
1N4148
1N4148
1 : Switch close
External switch S0 - - - S15 : →
S15
S7
S6
1N4148
1N4148
0 : Switch open
S0 - - S7
0 0 0 0 0 0 1 0
RLCD-5
S8 - - S15
0 1 0 1 0 0 1 0
ROM2
0 0 0 0 0 0 0 0
S0 - -S7
S14,S15
0 1 1 0 0 0 0 1
(S8 - - S13) OR ROM2
0 1 0 1 0 0 x x
↓ x ↓ x ↓ ↓ ↓ ↓
A8’ - - A15’ : →
1 : non-inversion
0 : inversion
A8 - - A15 : →
Custom codes A0 - - - A15 : →
200K
S14
1N4148
On chip ROM2 : →
A0 - - A2,A3 - - A7 : →
200K
S5
S4
C8
C7
A1B
A1 - A2B
A3
-
-
-
-
- A4B A5B A6B A7B
1 1 0 0 1 1 1 0
A0 - - A7
0 1 1 0 0 0 0 1
A8 - - A15
1 1 0 0 1 1 1 0
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
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CM2915
LCD Driver (19*4) with Key Scan (4*8)
The vaules of the data codes ( D0 - - D7 )
The CM2915 contains 32 function keys。Each key corresponds to one data code。 The CM2915
provide 3 double keys。
C. The CM2915 data codes :
KEY
NAME
K11
K21
K31
K41
K12
K22
K32
K42
K13
K23
K33
K43
K14
K24
K34
K44
K16+K26
K16+K36
DATA CODES
D0 - - - - - - - - - - D6
0 0 0 0 0 0 0
1 0 0 0 0 0 0
0 1 0 0 0 0 0
1 1 0 0 0 0 0
0 0 1 0 0 0 0
1 0 1 0 0 0 0
0 1 1 0 0 0 0
1 1 1 0 0 0 0
0 0 0 1 0 0 0
1 0 0 1 0 0 0
0 1 0 1 0 0 0
1 1 0 1 0 0 0
0 0 1 1 0 0 0
1 0 1 1 0 0 0
0 1 1 1 0 0 0
1 1 1 1 0 0 0
1 0 1 0 1 1 0
0 1 1 0 1 1 0
D7
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
KEY
NAME
K15
K25
K35
K45
K16
K26
K36
K46
K17
K27
K37
K47
K18
K28
K38
K48
K16+K46
DATA CODES
D0 - - - - - - - - - - D6
0 0 0 0 1 0 0
1 0 0 0 1 0 0
0 1 0 0 1 0 0
1 1 0 0 1 0 0
0 0 1 0 1 0 0
1 0 1 0 1 0 0
0 1 1 0 1 0 0
1 1 1 0 1 0 0
0 0 0 1 1 0 0
1 0 0 1 1 0 0
0 1 0 1 1 0 0
1 1 0 1 1 0 0
0 0 1 1 1 0 0
1 0 1 1 1 0 0
0 1 1 1 1 0 0
1 1 1 1 1 0 0
1 1 1 0 1 1 0
D7
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
0/1
The 8-bit data codes of will define the inverse codes of the other 8-bit data codes ( D8 - - D15 )。 D7 is
defined by an external switch.
- Code D7=0 -> connect to vdd.
- Code D7=1 -> connect to vss.
7
Function Keys control
If two or more keys are depressed simultaneously ( except K16+K26 & K16+K36 & K16+K46 )
,the transmission is disabled by the multi-depression prevention circuit。As regards the key transmission
priority in the case of two depressions,with simultaneous depressions ( ± 36 ms ) transmission is
disabled and first depressions,later remainder priority is used。
When a key is pressed,reading of the custom code and key data code is started,and IRO
output begins 36 ms later,so that if the key is begin depressed during this 36 ms interval one
transmission is performed。If a key is held down for 108 ms or longer,consecutive transmissions
of the leader code only are performed while the key is depressed。As a key interruption operation
can handle an interval of up to 126 ms ( from ON to ON ) 。It is possible to configure a system
with an extremely fast response time。
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
Http: www.ceramate.com.tw
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CM2915
LCD Driver (19*4) with Key Scan (4*8)
A. Two or more keys are depressed ( except K16+K26 & K16+K36 & K16+K46 )
K16
input
K16 Enables
Kmn
input
Kmn Enables
36 ms
36ms < t < 126 ms
K16 code transmission
DOUT
36 ms
108 ms ( min. )
(A)
K16
input
Kmn
input
K16 Enables
Kmn Enables
t < 36 ms
DOUT
The transmission is disabled.
(B)
Kmn
input
Kmn Enables
K16
input
K16 Enables
36 ms
36ms < t < 126 ms
Kmn code transmission
DOUT
36 ms
108 ms ( min. )
(C)
Page 8/10
Kmn
input
Kmn Enables
K16
input
K16 Enables
t < 36 ms
DOUT
The transmission is disabled.
(D)
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 14 of 19
Rev 1.0 Aug.1, 2003
Fax:886-3-3521052
CM2915
LCD Driver (19*4) with Key Scan (4*8)
Kmn
input
Kmn Enables
t < 108 ms
Kmn code transmission
DOUT
36 ms
108 ms ( min. )
(E)
Kmn
input
Kmn Enables
t > 108 ms
Kmn code transmission
DOUT
36 ms
108 ms ( min. )
108 ms ( min. )
(F)
To avoid the mistakes made by keyboard scanning or simultaneous two-key input ,excep 3 double
key active function (K16+K26,K16+K36,K16+K46) ,the CM2915 is facilitated with 36 ms starting time。
B. The 3 double keys are depressed ( K16+K26 & K16+K36 & K16+K46 )
Kd6 : one of ( K26 or K36 or K46 )
K16
input
K16 Enables
Kd6
input
Kd6 Enables
36 ms
t > 126 ms
K16 code transmission
DOUT
K16+Kd6 code transmission
36 ms
108 ms
108 ms
The algorithm rule of the custom codes ( A0 - - - A15 ) can be selected by mask option,and the user can
choose the CM2915-1 or CM2915-2。
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 15 of 19
Rev 1.0 Aug.1, 2003
Fax:886-3-3521052
CM2915
LCD Driver (19*4) with Key Scan (4*8)
8
LCD pattern
要調整 ROSC 的頻率時,請量測 Frame 要為 55.5Hz,至於其生產可容許的誤差範圍,要
以接收器(FLASH ROM)所能辨認的最大頻率範圍來生產。
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 16 of 19
Rev 1.0 Aug.1, 2003
Fax:886-3-3521052
CM2915
LCD Driver (19*4) with Key Scan (4*8)
9
Application circuit
(For RC oscillator use)
4.3K
COM 0 -- COM3
SEG0 - SEG18
ROSC
C1
C2
XI
C3
C4
SYNCB
C5
C6
CKWB
C7
C8
DI
VLCD
30K
1000pF
Px
Px
Px
MCU
Px
IR rcv.
VDD
DOUT
0.1u
GND
GND
D7
200Kohm
R1
R2
R3
R4
AIN
RLCD-3
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 17 of 19
Rev 1.0 Aug.1, 2003
Fax:886-3-3521052
CM2915
LCD Driver (19*4) with Key Scan (4*8)
(For Resonator oscillator use)
)
4.3K
COM 0 -- COM3
SEG0 - SEG18
XO
C1
C2
XI
C3
C4
SYNCB
C5
C6
CKWB
C7
C8
DI
VLCD
100p
455Khz
100p
Px
Px
Px
MCU
IR rcv.
Px
VDD
DOUT
0.1u
GND
GND
D7
100 -200
Kohm
R1
R2
R3
R4
AIN
RLCD-31
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 18 of 19
Rev 1.0 Aug.1, 2003
Fax:886-3-3521052
CM2915
LCD Driver (19*4) with Key Scan (4*8)
(For LCD driver use)
)
VLCD COM 0 -- COM3 SEG0 - SEG18
30K
ROSC
1000pF
C1
C2
C3
C4
C5
C6
C7
C8
XI
MCU
Px
SYNCB
Px
CKWB
Px
DI
VDD
R1
R2
R3
R4
0.1u
GND
GND
DOUT
D7
AIN
RLCD-32
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN
Email: [email protected]
Tel:886-3-3214525
Http: www.ceramate.com.tw
Page 19 of 19
Rev 1.0 Aug.1, 2003
Fax:886-3-3521052