Semiconductor MSC1209 This version: 1999 MSC1209 Previous version
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E2C0020-29-53
Semiconductor MSC1209
This version: 1999 MSC1209 Previous version: Nov. 1997
42-Bit Vacuum Fluorescent Display Tube Driver with Digital Dimming Function
GENERAL DESCRIPTION
MSC1209 Bi-CMOS display driver 1/2-duty vacuum fluorescent display tube. MSC1209 consists 84-bit shift register, 84-bit latch circuit, 10-bit digital dimming circuit, 42-bit segment drivers, 2-bit grid circuit, cascade control circuit. MSC1209 interfaced with microcontroller using three signal lines LOAD, CLOCK, DATA. cascaded MSC1209 share LOAD, CLOCK, DATA.
FEATURES
Power supply voltage: (Built-in regulator logic) Operating temperature range: +105°C Driving segments directly: VOH=VDD-0.5V IOH=-3.0mA (VDD=15.0V) Built-in digital dimming circuit 10-bit resolution Programmable duty range 0/2048 (0%) 1016.5/2048 (49.6%) interfaces with microcontroller: LOAD, CLOCK, DATA Cascade connection available (The cascaded MSC1209 share LOAD, CLOCK, DATA.) Built-in oscillation circuit with external capacitor single used) Built-in power-on reset circuit Package: 56-pin plastic (QFP56-P-910-0.65-2K) (Product name: MSC1209GS-2K)
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MSC1209
BLOCK DIAGRAM
GRID1
GRID2
SEG1
SEG42
2-bit Grid Driver Voltage Regulator
42-bit Segment Driver
VDD=8 Level Shifter VCC=5.0V (Regulator)
BLANK MODEA
Timing Generator
Multiplexer
10-bit Digital Dimming 10-bit Latch bits MODEB LOAD LOAD Timing Control 10-bits Q10) DATA CLOCK 2-bit Q1-Q84 84-bit Shift Register 84-bit Latch
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MSC1209
INPUT OUTPUT CONFIGURATION
Schematic Diagram Logic Portion Input Schematic Diagram Logic Portion Input Circuit Circuit
Reg.) Reg.)
INPUT
Schematic Diagram Logic Portion Output Schematic Diagram Driver Output Circuit Circuit
Reg.)
OUTPUT
OUTPUT
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CONFIGURATION (TOP VIEW)
SEG10 SEG11 SEG12 SEG13 SEG14 SEG15 SEG16 SEG17
MSC1209
MODEB LOAD CLOCK DATA MODEA BLANK GRID2
GRID1 SEG42 SEG41 SEG40 SEG39 SEG38 SEG37 SEG36 SEG35 SEG34 SEG33 SEG32 SEG31
SEG18 SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 connection 56-Pin Plastic
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MSC1209
DESCRIPTION
Symbol DATA CLOCK Type Connected Microcontroller Microcontroller Description Serial data input. (Positive logic) Receives display data dimming data. Shift clock input. Serial data shifted rising edge this shift clock pulse. Load pulse input. load signal input when transfer serial data completed. Segment driver output. Grid driver output. When this "L", display goes Connect external transistor this pin. segment data first (S1) 42nd (S42) valid 84-bit segment data. Grid driver output. When this "L", display goes Connect external transistor this pin. segment data 43rd (S43) 84th (S84) valid 84-bit segment data. Input with pull-up resistor display blank. When this "L", display goes off. (SEGn="L") Input output oscillation. Connect external capacitor 68pF. 68pF typical value oscillating frequency 512kHz. These pins specify operating mode. MODEA MODEB MODEA MODEB Operating Mode Master Operation Test Mode Slave Operation Slave Operation
LOAD
Microcontroller
SEG1 SEG42 GRID1
Anode electrode tube Grid electrode tube
GRID2
Grid electrode tube
BLANK
MODEA slave side Power source Power source
master outputs switching signals segment data that corresponds grid signals. master connected MODEA slave Power supply 18V). pin. (Ground)
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MSC1209
ABSOLUTE MAXIMUM RATINGS
Parameter Power Supply Voltage Input Voltage Power Dissipation Storage Temperature Symbol TSTG Condition input pins Ta25°C Rating -0.3 -0.3 +6.0 +150 Unit
RECOMMENDED OPERATING CONDITIONS
Parameter Power Supply Voltage Input Voltage Input Voltage Driver Output Current CLOCK Frequency Oscillation Frequency Grid Frequency Operating Temperature Symbol IO-1 IO-2 fOSC fGRID Condition input pins other than input pins other than VDD=10.8V, driver state VDD=10.8V, drivers state C=68pF C=68pF Min. -0.3 307.2 Typ. Max. 18.0 +0.8 -2.2 -92.4 716.8 +105 Unit
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MSC1209
ELECTRICAL CHARACTERISTICS
Characteristics
Parameter Input Voltage Input Voltage Input Current Symbol IIH1 IIH2 Input Current IIL1 IIL2 Output Voltage VOH1 VOH2 VOH3 VOH4 VOH5 Output Voltage VOL1 VOL2 VOL3 VOL4 VOL5 VOL6 Supply Current Unless otherwise specified: Ta=-40 +105°C, VDD=8.0 18.0V Condition Min. Max. Unit Applied VDD=18.0V, VIH1=5.0V VDD=18.0V, VIH2=5.0V VDD=18.0V, VIL1=0.0V VDD=18.0V, VIL2=0.0V VDD=9.5V, IOH1=-2.0mA VDD=12.0V, IOH2=-2.5mA VDD=15.0V, IOH3=-3.0mA VDD=9.5V, IOH4=-0.8mA VDD=12.0V, IOH5=-1.0mA VDD=9.5V, IOL1=500mA VDD=9.5V, IOL2=200mA VDD=9.5V, IOL3=1.0mA VDD=9.5V, IOL4=500mA VDD=9.5V, IOL5=200mA VDD=12.0V, IOL6=1.0mA fOSC=512kHz, load -0.3 -1.0 -1.0 -500 VDD-0.5 VDD-0.5 VDD-0.5 VDD-0.5 +0.8 +1.0 +1.0 -100 VDD-VSS SEG1 input pins input pins other than BLANK BLANK input pins other than BLANK BLANK SEG1
GRID1
Characteristics
(Ta=-40 +85°C, VDD=8 18V) Parameter CLOCK Frequency CLOCK Pulse Width CLOCK Rise/Fall Time DATA Setup Time DATA Hold Time LOAD Time CLOCK Time LOAD Pulse Width SEGn Rise/Fall Time Rise/Fall Time VDD-DATA Input Time VDD-Hold Time Rise Time Symbol fC(1/tCLOCK) tCR/tCF tR/tF tR/tF fPDA fPDF fPR2 Condition CL=50pF CL=50pF When mounted unit When mounted unit Min. Max. Unit
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MSC1209
TIMING DIAGRAM
Data Timing
tCLOCK
3.8V 0.8V 3.8V 0.8V 3.8V 0.8V
CLOCK
DATA
VALID
VALID
VALID
VALID
Reset Timing
tPRZ tPDA tPOF
80%VDD 0.0V 3.8V
DATA
0.8V
Output Timing
0.8VDD 0.2VDD 4.0V 1.0V
SEGn, GRIDn
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MSC1209
FUNCTIONAL DESCRIPTION
DATA Input This device uses 10-bit dimming data D10) 84-bit segment data S84). transfer these data, mode bits must sent after each these data succeedingly. data transfer timing diagram shown below.
DATA CLOCK LOAD
Figure Data Transfer Timing
Enable "0": Indicates data from master "1": Indicates data from slave Mode specification "1": Indicates that data sent ahead dimming data. "0": Indicates that data sent ahead segment data. dimming data data GRID1 SEG1 data GRID1 SEG2 data GRID1 SEG42 data GRID2 SEG1 data GRID2 SEG42 Notes: When number input data bits larger, data bits pushed same order that they input, bits data counted from entered last used valid data. case segment data) When number input data bits smaller, data remaining shift register before data transfer shifted used valid data. CLOCK Input Data shifted rising edge clock. LOAD Input contents shift register shifted while LOAD input level latched transition. This LOAD signal regenerated tube driver latch pulse dimming data segment data. When 10-bit dimming data 84-bit segment data have been transferred, input LOAD signal prior next clock.
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Semiconductor Blank Function
MSC1209
Inputting level BLANK turns display (segment output "L"). this time, grid outputs output normally. Initial Setting When power turned (i.e., when segment data never been transferred), display turned (segment output "L"). Display turned moment when transfer segment data complete. relationship between data transfer display shown Figure
DATA LOAD SEGn Display Display Dimming Data Segment Data
Figure Relationship Between Data Transfer Display
after power-on, segment data transferred before dimming data transferred, display turned moment when transfer segment data complete, which time dimming value undefined. relationship between data transfer display shown Figure
DATA LOAD SEGn Display Segment Data Dimming Data
Undefined Dimming Value Display
Figure Relationship Between Advanced Transfer Segment Data Display
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Semiconductor Oscillator
MSC1209
Connect external capacitor (C), shown Figure oscillating frequency fOSC depends external capacitor used. following equation true between fOSC grid frequency (fGRID): fGRID fOSC/2048
fOSC (68pF)
Figure Oscillator Equivalent Circuit
Dimming Function duty cycle grid output changed 1/2048 step with respect 10-bit dimming data. Table shows relationship between dimming data duty ratio. Table Dimming Data Duty Ratio
(MSB) Dimming Data 0000 0000 (LSB) 0000 0001 0111 1000 1001 1110 Duty Ratio 0/2048 1/2048 1015/2048 1016/2048 1016.5/2048 1016.5/2048
1111 1111 1111
1111
Note: Setting address 3FFH invalid. Duty ratios programmable within range 0/2048 (0%) 1016.5/2048 (49.6%). Figure shows grid output timing. Cascade Connection When MSC1209 used cascade connection, MODEA MODEB pins connect them, shown below.
MSC1209 (Master) MODEA MODEB MSC1209 (Slave) MODEA MODEB OPEN
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MSC1209
where MODEA MODEB pins operates master, where MODEB slave. connecting master side output slave side MODEA pin, segments slave side operate synchronization with grid master side.
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Semiconductor GRID Output Timing
tFOSC (fOSC) SEGn Dimming Data; 3FE[H] 3F9[H] GRID1 GRID2 Display Display Display Display Display Display
tBLANK1 tBLANK2
MSC1209
tGRID
Dimming Data; 3F8[H] GRID1 GRID2 Display Display Display Display Display Display
Dimming Data; 002[H] GRID1 GRID2 Display Display Display
Dimming Data; 001[H] GRID1 GRID2 Display Display Display
Dimming Data; 000[H] GRID1 GRID2 Display Display
tFOSC Typical tGRID 2048tFOSC tBLANK1 2tFOSC, tBLANK2 5.5tFOSC Figure Dimming Data Duty Ratio
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MSC1209
APPLICATION CIRCUIT
When MSC1209 used
(SEG1
SEG1 LOAD CLOCK DATA MODEA MODEB
SEG42 GRID1 GRID2
Display Tube
When MSC1209 used
(SEG1
SEG1 LOAD CLOCK DATA MODEA MODEB
SEG42 GRID1 GRID2
SEG1 LOAD CLOCK DATA MODEA MODEB
SEG42 GRID1 GRID2
Display Tube
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MSC1209
PACKAGE DIMENSIONS
(Unit
QFP56-P-910-0.65-2K
Mirror finish
Package material Lead frame material treatment Solder plate thickness Package weight
Epoxy resin alloy Solder plating more 0.43 TYP.
Notes Mounting Surface Mount Type Package SOP, QFP, TSOP, TQFP, LQFP, SOJ, (PLCC), SHP, 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).
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E2Y0002-29-11
NOTICE
information contained herein change without notice owing product and/or technical improvements. Before using product, please make sure that information being referred up-to-date. outline action examples application circuits described herein have been chosen explanation standard action performance product. When planning product, please ensure that external conditions reflected actual circuit, assembly, program designs. When designing your product, please product below specified maximum ratings within specified operating ranges including, limited operating voltage, power dissipation, operating temperature. assumes responsibility liability whatsoever failure unusual unexpected operation resulting from misuse, neglect, improper installation, repair, alteration accident, improper handling, unusual physical electrical stress including, limited exposure parameters beyond specified maximum ratings operation outside specified operating range. Neither indemnity against license third party's industrial intellectual property right, etc. granted connection with product and/or information drawings contained herein. responsibility assumed infringement third party's right which result from thereof. products listed this document intended general electronics equipment commercial applications (e.g., office automation, communication equipment, measurement equipment, consumer electronics, etc.). These products authorized system application that requires special enhanced quality reliability characteristics system application where failure such system application result loss damage property, death injury humans. Such applications include, limited traffic automotive equipment, safety devices, aerospace equipment, nuclear power control, medical equipment, life-support systems. Certain products this document need government approval before they exported particular countries. purchaser assumes responsibility determining legality export these products will take appropriate necessary steps their expense these. part contents cotained herein reprinted reproduced without prior permission. MS-DOS registered trademark Microsoft Corporation.
Copyright 1999 Electric Industry Co., Ltd.
Printed Japan
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