msm6775 Oki Semiconductor, msm6775 Datasheet

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msm6775

Manufacturer Part Number
msm6775
Description
1/3, 1/4, 1/5 Duty Lcd Driver With 5-dot Common Driver And 80-dot Segment Driver
Manufacturer
Oki Semiconductor
Datasheet

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Manufacturer
Quantity
Price
Part Number:
msm6775T3-K
Manufacturer:
OKI
Quantity:
20 000
Part Number:
msm6775TS-K
Manufacturer:
STM
Quantity:
4 257
E2B0012-27-Y2
¡ Semiconductor
¡ Semiconductor
MSM6775
1/3, 1/4, 1/5 DUTY LCD DRIVER WITH 5-DOT COMMON DRIVER AND 80-DOT
SEGMENT DRIVER
GENERAL DESCRIPTION
The MSM6775 is an LCD driver for dynamic display providing 3-duty-switchable pins (1/3, 1/
4 and 1/5 duty). It can directly drive LCDs of up to 400, 320 and 240 segments when 1/5, 1/4
and 1/3 duty are selected, respectively.
FEATURES
• Operating range
• Segment output
• Serial transfer clock frequency
• Serial interface with CPU
• One-to-one corresponcence between input data and its output
• Built-in oscillator circuit for COMMON signals
• The entire display can be turned off. (BLANK pin)
• Package:
Supply voltage (V
Operating temperature (T
LCD driving voltage (V
1/5 duty
1/4 duty
1/3 duty
When input data is at "H" level
When input data is at "L" level
100-pin plastic TQFP (TQFP100-P-1414-0.50-K) (Product name : MSM6775TS-K)
DD
)
DD
op
-V
)
LC3
)
: 2.7 to 5.5V
: –40 to +85 C
: 3.5 to 5.5V
: 80 pins
: Up to 400 segments can be displayed.
: Up to 320 segments can be displayed.
: Up to 240 segments can be displayed.
: 4MHz
: Through three input pins (DATA, LOAD, and
: Display goes on.
: Display goes off.
CLOCK)
Previous version: Mar. 1996
This version: Nov. 1997
MSM6775
1/13

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msm6775 Summary of contents

Page 1

... DUTY LCD DRIVER WITH 5-DOT COMMON DRIVER AND 80-DOT SEGMENT DRIVER GENERAL DESCRIPTION The MSM6775 is an LCD driver for dynamic display providing 3-duty-switchable pins (1/ and 1/5 duty). It can directly drive LCDs 400, 320 and 240 segments when 1/5, 1/4 and 1/3 duty are selected, respectively. ...

Page 2

... OSC–C OSC OSC–IN DSEL1 DSEL2 80-DOT SEGMENT DRIVER 80-CH DATA SELECTOR 80-BIT 80-BIT 80-BIT LATCH 4 LATCH 3 LATCH 2 80 88-BIT SHIFT REGISTER TIMING GENERATOR MSM6775 SEG80 80-BIT LATCH 1 V LC1 COMMON V LC2 DRIVER V LC3 COM1 COM2 COM3 COM4 COM5 2/13 ...

Page 3

... SEG65 15 SEG66 16 SEG67 17 SEG68 18 SEG69 19 SEG70 20 SEG71 21 SEG72 22 SEG73 23 SEG74 24 SEG75 connection 100-Pin Plastic TQFP MSM6775 75 SEG25 74 SEG24 73 SEG23 72 SEG22 71 SEG21 70 SEG20 69 SEG19 68 SEG18 67 SEG17 66 SEG16 65 SEG15 64 SEG14 63 SEG13 62 SEG12 61 SEG11 60 SEG10 59 SEG9 58 SEG8 57 SEG7 56 SEG6 55 SEG5 54 SEG4 53 SEG3 52 SEG2 ...

Page 4

... Bias pins for LCD drive. Through these pins, bias voltages for the LCD LC1 V — are externally supplied. The bias potential must meet the following condition: LC2 V LC3 V DD — Supply voltage pin and ground pin Description DSEL2 DSEL1 Duty selected Don't care V >V ≥V >V DD LC1 LC2 LC3 MSM6775 1/3 1/4 1/5 4/13 ...

Page 5

... R — — 25 COM Symbol 1/3 duty 1/4 duty 1/5 duty 0.001 0.001 0 R 220 160 1 MSM6775 MSM6775 Rating Unit –0.3 to +6.0 V –0 +0 –55 to +150 °C Unit Applicable pin LC1 LC2 LC3 °C — ...

Page 6

... O =4. =±100mA =±100mA O I =+100mA O I =–10mA O V =4. =±10mA =±10mA O I =+10mA O V =5.0V, no load DD MSM6775 (V =2.7 to 5.5V, Ta=–40 to +85°C) DD Min Max Unit *1 0.85V 0.15V 0. 0. — — ...

Page 7

... WLC WHC V V IH1 IH1 V IL1 1 1/f OSC WHO V IH1 V V IL1 IL1 t WLO MSM6775 (V =2.7 to 5.5V, Ta=–40 to +85°C) DD Max Unit Applicable pin 4 — ns CLOCK — ns — ns DATA — ns CLOCK — ns LOAD — ns CLOCK — ns LOAD 50 ns ...

Page 8

... CLOCK signal, transferred to the 80-bit latch while the load signal is at "H" level, and then output via the 80-dot segment driver DATA 1 80 CLOCK LOAD Data in display latch DM1 DM2 DM3 Old data MSM6775 New data 8/13 ...

Page 9

... Display data corresponding to COM2 0 Display data corresponding to COM3 0 Display data corresponding to COM4 0 Display data corresponding to COM5 select 80-bit latches that correspond to COM1 to COM5 the display data MSM6775 First bit Corresponds to SEG80 LCD display data ...

Page 10

... APPLICATION CIRCUITS (For 1/4 duty) CPU +5V 1/4 DUTY 320-SEGMENT LCD PANEL SEG1 SEG80 DATA CLOCK LOAD BLANK V DD OSC-IN MSM6775 OSC-C OSC-R DSEL1 DSEL2 LC1 LC2 LC3 BIAS CIRCUIT MSM6775 COM1 COM2 COM3 COM4 COM5 Open 10/13 ...

Page 11

... I vs [V] DD COMMON Frame Frequency vs [V] DD MSM6775 =8000Hz. OSC Ta=25°C R =51kW 0 R =160kW 1 C =0.001mF 0 1/4 duty Ta=25°C 1/3 duty 1/4 duty 1/5 duty 6 7 11/13 ...

Page 12

... Oscillation Frequency vs 1000 100 [kW [kW] 0 MSM6775 =3V) C =0.00047mF 0 C =0.001mF 0 C =0.0022mF 0 C =0.0047mF Ta=25°C 100 =5V) C =0.00047mF 0 C =0.001mF 0 C =0.0022mF 0 C =0.0047mF ...

Page 13

... Therefore, before you perform reflow mounting, contact Oki’s responsible sales person for the product name, package name, pin number, package code and desired mounting conditions (reflow method, temperature and times). MSM6775 (Unit : mm) Package material Epoxy resin ...

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