Semiconductor MSC7171 Semiconductor 12-Bit Grid Driver This

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Semiconductor MSC7171 Semiconductor 12-Bit Grid Driver This

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E2C0025-27-Y3
Semiconductor MSC7171
Semiconductor 12-Bit Grid Driver
This version: Nov. 1997 MSC7171 Previous version: Jul. 1996
GENERAL DESCRIPTION
MSC7171 driver designed directly drive grids fluorescent display tube. contains 12-bit shift register output drivers. Display data serially written into internal 12-bit shift register rising edge each clock pulse. setting DUTY "L", driver outputs "L". Blanking using this function. setting STANDBY "H", driver outputs MSC7171 enters current mode.
FEATURES
Logic supply voltage Driver supply voltage Driver output current IOH: (Only driver output high state) IOL: Directly connectable display tube: pull-down resistor required Data transfer cycle Brightness control through DUTY Low-current mode with STANDBY Package: 24-pin plastic (SOP24-P-430-1.27-K)(Product name: MSC7171GS-K)
Semiconductor
MSC7171
BLOCK DIAGRAM
DISP STANDBY DUTY DATA CLOCK 12-BIT PO12 GRID12 GRID
INPUT OUTPUT CONFIGURATION
Input Circuit Logic
Input
Driver Output Circuit
VDISP VDISP
Output
Semiconductor
CONFIGURATION (TOP VIEW)
CLOCK DATA
STANDBY
GRID GRID GRID GRID GRID GRID
MSC7171
DUTY VDISP GRID GRID GRID GRID GRID GRID
No-connection 24-Pin Plastic
DESCRIPTIONS
Symbol CLOCK Type Description Clock input shift register. Data clocked this through DATA while this level. data shifted rising edge shift clock pulse. Serial data input into shift register. Standby signal input setting this "H", driver outputs enters current mode. Ground. High-withstand voltage driver output pins driving vacuum fluorescent (VF) display tube. These pins connected directly grids display tube. pull-down resistor required. display tube driver power supply. Logic power supply. Duty control signal input. When this "L", driver outputs "L", allowing this used brightness control.
DATA STANDBY
GRID1
VDISP DUTY
Semiconductor
MSC7171
ABSOLUTE MAXIMUM RATINGS
Parameter Logic Supply Voltage Driver Supply Voltage Input Voltage Power Dissipation Attenuation Rate Storage Temperature *1,2 Symbol VDISP Rj-a TSTG Condition Applicable logic power Applicable driver power Applicable input pins Rating -0.3 +6.5 -0.3 -0.3 +0.3 +150 Unit °C/W
Voltage logic with respect Stresses beyond "Absolute Maximum Ratings" cause permanent damage device. Thermal resistance package (between junction atmosphere) junction temperature (Tj) expressed equation below must exceed 150°C. Tj=P Rj-a Maximum power consumption
RECOMMENDED OPERATING CONDITIONS
Parameter Logic Supply Voltage Driver Supply Voltage High Level Input Voltage Level Input Voltage Driver High Level Output Current Driver Level Output Current Clock Frequency Data Setup Time Data Hold Time Pulse Width DUTY STANDBY Setup Time CLOCK-DUTY DUTY-CLOCK STANDBY-CLK Operating Temperature Symbol VDISP fCLK tSU(D-CLK) tH(CLK-D) tw(DUTY) tw(STB) tSU(CLK-DUTY) tSU(DUTY-CLK) tSU(STB-CLK) Condition Applicable logic power Applicable driver power Applicable input pins Applicable input pins Applicable driver output pins Applicable driver output pins Timing Diagram Timing Diagram Timing Diagram Timing Diagram Timing Diagram Timing Diagram Timing Diagram Timing Diagram Min. Max. Unit
Semiconductor
MSC7171
ELECTRICAL CHARACTERISTICS
Characteristics
Parameter Logic Power Supply Symbol IDD1 IDD2 IDD3 Driver Power Supply High Level Input Current Level Input Current High Level Output Voltage Level Output Voltage IDISP1 IDISP2 (VDD=4.5 V,VDISP=8 V,Ta=-40 +85°C) Condition load, output load, DUTY=L load, STANDBY=L load, output load, DUTY=L VDD=5.5 V,VIN=5 VDD=5.5 V,VIN=0.5 IOH=-50 IOL=100 Min. VDISP-4 Typ. Max. Unit
Characteristics
Parameter Delay Time Transient Time Delay Time Transient Time Symbol tDLH tTLH tDHL tTHL
(VDD=4.5 V,VDISP=8 V,Ta=-40 +85°C) Condition Min. Typ. Max. Unit CL=10 CL=10 CL=10 CL=10
TIMING DIAGRAM
STANDBY (STB-CLK) (D-CLK) (CLK-D) (CLK-DUTY) (DUTY-CLK)
CLOCK
DATA
DUTY
DUTY
tDLH
tDHL tTHL
GRID1
tTLH
Semiconductor
MSC7171
FUNCTIONAL DESCRIPTION
Function Table Shift register
Input CLOCK DATA PO1n PO1n Shift Register Parallel Change PO10n PO10n PO11n PO11n PO11 PO12
Don't Care PO1n PO11n: Data PO11 just before CLOCK rises Driver output
Input STANDBY DUTY Shift Register Parallel Driver Output DRIDm Current Mode Normal Mode Normal Mode Normal Mode Operating Mode
Don't Care
NOTES
contents shift register undefined after power turned Because this, immediately after power turned some drivers cause display flicker. avoid this, first turn logic power while holding STANDBY "H", then turn driver power. After this, STANDBY input data from DATA pin, then DUTY start display.
Semiconductor
MSC7171
PACKAGE DIMENSIONS
(Unit
SOP24-P-430-1.27-K
Mirror finish
Package material Lead frame material treatment Solder plate thickness Package weight
Epoxy resin alloy Solder plating more 0.58 TYP.
Notes Mounting Surface Mount Type Package SOP, QFP, TSOP, SOJ, (PLCC), surface mount type packages, which very susceptible heat reflow mounting humidity absorbed storage. Therefore, before perform reflow mounting, contact Oki's responsible sales person product name, package name, number, package code desired mounting conditions (reflow method, temperature times).

Semiconductor MSC7171 Semiconductor 12-Bit Grid Driver This

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