SC230 SILAN | Alldatasheet
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HANGZHOU MICROELECTRONICS CO.,LTD REV:1.4 2004.08.03 Http: www.silan.com.cn Page 1 of 14 GENERAL 32X3 SEG LCD DISPLAY DRIVER WITH 1/3 DUTY DESCRIPTIONS SC230 is a generalpurpose external LCD driver.
FEATURES
- Support max. 32×3 LCD SEG * Support max. 24 keys input * 1/3 duty, 1/2 bias * Key input and LCD output can be processed at the same time * SEG0/P1~SEG3/P4 can be as LCD or common output
APPLICATIONS
- LCD driver
ORDERING INFORMATION
SC230 QFP6414 X 201.0 QFP6414x201.0 BLOCK DIAGRAM WDT Basic timer Clock timer 8bit timer/ Counter 0 Interrupt control Instruction register PC PSW SP ALU I/O ports 288 x 4Bit RAM 2/4 K Bytes ROM LCD driver/ controller Input ports RESET BIAS VLC0 COM0 8KS1 KS4 DO KI1 KI6 SEG31 SEG0 COM2 9 19 18 VDD CLKDI VLC2 OSC 11 12 XinXout XTout XTin GND
HANGZHOU MICROELECTRONICS CO.,LTD REV:1.4 2004.08.03 Http: www.silan.com.cn Page 2 of 14 ABSOLUTE MAXIMUM RATING(Ta mb=25°C) Characteristics Symbol Ratings Unit Power Supply VDD 0.3~6.5 V Input Voltage VI 0.3~VDD+0.3 V Output Voltage VO 0.3~VDD+0.3 V Operating Temperature Topr 20~+70 °C Storage Temperature Tstg 40~+125 °C ELECTRICAL CHARACTERISTICS (Ta mb=25°C,VSS=0v) Characteristics Symbol Test Conditions Min. Typ. Max. Unit Operating Voltage VDD 4.5 6.0 V VIH1 0.8VDD VDD V Input VTG[H] VIH2 KI1~KI6 0.7VDD VDD V Input VTG[L] VIL 0 0.3VDD V Oscillator Frequency fosc VDD=5V, R=33kΩ 2.0 MHz Data Set Time tds 26 1524 µ s Data Hold Time tdh 26 1524 µ s High Pulse Width tφ H 26 1524 µ s Low Pulse W idth tφ L 26 1524 µ s CE Wait Time tcp 26 1524 µ s CE Set Time tcs 26 1524 µ s CE Hold Time tch 26 1524 µ s DO Delay Time tdc 10 20 µ s CE CL DI DO tĦL tĦH tds tch tcp tcs DO DI tdc tch
HANGZHOU MICROELECTRONICS CO.,LTD REV:1.4 2004.08.03 Http: www.silan.com.cn Page 3 of 14 PIN CONFIGURATION PIN DESCRIPTIONS Pin No. Symbol Pin descriptions
1 COM0
2 COM1
3 COM2
4, 26 NC No connection
5 BIAS LCD bias control
6 VLC0
7 VLC1
8 VLC2
Power supply(4.5V~6.0V)
10 VSS Ground
11, 12 Xout, Xin Crystal oscillator input/output
13 TEST Connect to ground
14 XTIN Connect to ground
15 XTOUT No connection
(To be continued)
HANGZHOU MICROELECTRONICS CO.,LTD REV:1.4 2004.08.03 Http: www.silan.com.cn Page 4 of 14 (Continued) Pin No. Symbol Pin descriptions
16 RESET Reset pin(low active)
18 CLK Clock input
19 DI Serial data input
20 CE Enable
25 DO Serial data output
21 KS1
22 KS2
23 KS3
24 KS4
27 KI1
28 KI2
29 KI3
30 KI4
31 KI5
32 KI6
33 SEG0/P1
34 SEG1/P2
35 SEG2/P3
36 SEG3/P4
37 SEG4
38 SEG5
39 SEG6
40 SEG7
41 SEG8
42 SEG9
43 SEG10
44 SEG11
45 SEG12
46 SEG13
47 SEG14
48 SEG15
49 SEG16
50 SEG17
51 SEG18
52 SEG19
53 SEG20
54 SEG21
55 SEG22
(To be continued)
HANGZHOU MICROELECTRONICS CO.,LTD REV:1.4 2004.08.03 Http: www.silan.com.cn Page 5 of 14 (Continued) Pin No. Symbol Pin descriptions
56 SEG23
57 SEG24
58 SEG25
59 SEG26
60 SEG27
61 SEG28
62 SEG29
63 SEG30
64 SEG31
HANGZHOU MICROELECTRONICS CO.,LTD REV:1.4 2004.08.03 Http: www.silan.com.cn Page 6 of 14 (1) DD ˖Frame data LCD address ˖42H D1~D96 ˖LCD SEG data D97~D126 ˖0 P0,P1 ˖SEG0/P1~SEG3/P4 function selection SC ˖LCD switch selection DR ˖1/2 bias or 1/3 bias selection (2) The control data is only in the first frame (DD=0) CONTROL DATA DESCRIPTION (1)P0,P1: SEG0/P1~SEG3/P4 function selection Control data Port description P0 P1 SEG0/P1 SEG1/P2 SEG2/P3 SEG3/P4 0 0 S0 S1 S2 S3 1 1 P1 P2 P3 P4 Port Display data SEG0/P1 D1 SEG1/P2 D4 SEG2/P3 D7 SEG3/P4 D10 (2)SC: LCD switch selection SC Function
0 LCD is on
1 LCD is off
(3) DR:1/2 bias or 1/3 bias selection DR Function 0 1/3 bias 1 1/2 bias
HANGZHOU MICROELECTRONICS CO.,LTD REV:1.4 2004.08.03 Http: www.silan.com.cn Page 7 of 14 LCD DATA AND OUTPUT Use SEG0/P1~SEG3/P4 as display ports Port COM0 COM1 COM2 SEG0/P1 D1 D2 D3 SEG1/P2 D4 D5 D6 SEG2/P3 D7 D8 D9 SEG3/P4 D10 D11 D12 SEG4 D13 D14 D15 SEG5 D16 D17 D18 SEG6 D19 D20 D21 SEG7 D22 D23 D24 SEG8 D25 D26 D27 SEG9 D28 D29 D30 SEG10 D31 D32 D33 SEG11 D34 D35 D36 SEG12 D37 D38 D39 SEG13 D40 D41 D42 SEG14 D43 D44 D45 SEG15 D46 D47 D48 Port COM0 COM1 COM2 SEG16 D49 D50 D51 SEG17 D52 D53 D54 SEG18 D55 D56 D57 SEG19 D58 D59 D60 SEG20 D61 D62 D63 SEG21 D64 D65 D66 SEG22 D67 D68 D69 SEG23 D70 D71 D72 SEG24 D73 D74 D75 SEG25 D76 D77 D78 SEG26 D79 D80 D81 SEG27 D82 D83 D84 SEG28 D85 D86 D87 SEG29 D88 D89 D90 SEG30 D91 D92 D93 SEG31 D94 D95 D96 Use SEG0/P1~SEG3/ P4 as general output port Port COM0 COM1 COM2 SEG0/P1 D1 X X SEG1/P2 D4 X X SEG2/P3 D7 X X SEG3/P4 D10 X X SEG4 D13 D14 D15 SEG5 D16 D17 D18 SEG6 D19 D20 D21 SEG7 D22 D23 D24 SEG8 D25 D26 D27 SEG9 D28 D29 D30 SEG10 D31 D32 D33 SEG11 D34 D35 D36 SEG12 D37 D38 D39 SEG13 D40 D41 D42 SEG14 D43 D44 D45 SEG15 D46 D47 D48 Port COM0 COM1 COM2 SEG16 D49 D50 D51 SEG17 D52 D53 D54 SEG18 D55 D56 D57 SEG19 D58 D59 D60 SEG20 D61 D62 D63 SEG21 D64 D65 D66 SEG22 D67 D68 D69 SEG23 D70 D71 D72 SEG24 D73 D74 D75 SEG25 D76 D77 D78 SEG26 D79 D80 D81 SEG27 D82 D83 D84 SEG28 D85 D86 D87 SEG29 D88 D89 D90 SEG30 D91 D92 D93 SEG31 D94 D95 D96 X= is not considered
HANGZHOU MICROELECTRONICS CO.,LTD REV:1.4 2004.08.03 Http: www.silan.com.cn Page 8 of 14 LCD data output (SEG10): When use SEGXX/P1~SEGXX/P4 as display port LCD data The function of input pins D31 D32 D33 SEG10 0 0 0 COM0, 1, 2, LCD SEG off 0 0 1 COM2, LCD SEG on 0 1 0 COM1, LCD SEG on 0 1 1 COM1, 2, LCD SEG on 1 0 0 COM0, LCD SEG on 1 0 1 COM0, 2, LCD SEG on 1 1 0 COM0, 1, LCD SEG on 1 1 1 COM0, 1, 2, LCD SEG on SERIAL DATA OUTPUT KEY address : 43H KD1~KD24 : key data Input Selection KI1 KI2 KI3 KI4 KI5 KI6 KS1 KD1 KD2 KD3 KD4 KD5 KD6 KS2 KD7 KD8 KD9 KD10 KD11 KD12 KS3 KD13 KD14 KD15 KD16 KD17 KD18 KS4 KD19 KD20 KD21 KD22 KD23 KD24
- If some key is pressed, the corresponding key data is high level keyboard scan.
HANGZHOU MICROELECTRONICS CO.,LTD REV:1.4 2004.08.03 Http: www.silan.com.cn Page 9 of 14 KEYBOARD SCAN 1ˊKeyboard scan time Keyboard scan spends 4T,and it should be executed twice. Press the corresponding key, then begin the key scan operation, and when the scan is completed (8T), output the signal which is needed by key data transmission. 2ˊKey data transmission KS1~KS3 pins are low level If the key is pressed, execute the key scan If the keypress time is over 8T, the output key data transmission request signal to the host, if the host transmits a key address, then begin to transmit the key data. If receive the display address when output the key data request signal to the host, then make CE=H, DO=L. If the key data transmission is completed, it will release the request and restore the key scan. Key on Key on Key on A B C 8T(s) 8T(s) 8T(s) LCD data LCD data Key address LCD data Key address [A] Key scan data [B] Key scan data T = 213/fx (fx = System clock) Key input 1 Key input 2 Keyboard scan CE DI DO
HANGZHOU MICROELECTRONICS CO.,LTD REV:1.4 2004.08.03 Http: www.silan.com.cn Page 10 of 14 KEY DATA PROCESS 1ˊSuppose that the host receives the key data in normal period t3: Key scan time (8T)… ..The data of the two key scan is different(new key data and already exist data) t4: Key scan time(16T)… The data of the two key scan is the same(new key data and already exist data) t5: Key address(43H)transmission time t6: Key data transmission time T =213/fx t7: t7=t5+ t4+LCD transmission time (fx = system clock) 2. Suppose that the host receives key data by interrupt t3: Key scan time (8T)… ..The data of the two key scan is different(new key data and already exist data) t4: Key scan time(16T)… The data of the two key scan is the same(new key data and already exist data) t5: Key address(43H)transmission time t6: Key data transmission time T =213/fx t8: t8= t4+LCD transmission time (fx = syste m clock)
HANGZHOU MICROELECTRONICS CO.,LTD REV:1.4 2004.08.03 Http: www.silan.com.cn Page 11 of 14 RESET Port state when reset Output State Output buffer CloseSEG0/P1~SEG3/P4 Output buffer L Output buffer CloseSEG4~SEG31 Output buffer L COM0~COM2 L KS1~KS4 L DO L RESET Sequence
HANGZHOU MICROELECTRONICS CO.,LTD REV:1.4 2004.08.03 Http: www.silan.com.cn Page 12 of 14 TYPICAL APPLICATION CIRCUIT COM0 COM1 COM2 SEG0
HANGZHOU MICROELECTRONICS CO.,LTD REV:1.4 2004.08.03 Http: www.silan.com.cn Page 13 of 14 PACKAGE OUTLINE QFP6414x201.0 Unit˖mm HANDLING MOS DEVICES: Electrostatic charges can exist in many things. All of our MOS devices are internally protected against electrostatic discharge but they can be damaged if the following precautions are not taken:
- Persons at a work bench should be earthed via a wrist strap.
- Equipment cases should be earthed.ҏ
- All tools used during assembly, including soldering tools and solder baths, must be earthed.
- MOS devices should be packed for dispatch in antistatic/conductive containers.