Semiconductor MSC1230 This version: Nov. 1997 MSC1230 Previous ve

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Semiconductor MSC1230 This version: Nov. 1997 MSC1230 Previous ve

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E2C0024-27-Y4 Semiconductor
Semiconductor MSC1230
This version: Nov. 1997 MSC1230 Previous version: Jul. 1996
111-Bit 2/3-Duty Controller/Driver with Digital Dimming Function
GENERAL DESCRIPTION
MSC1230 Bi-CMOS display driver with digital dimming function. enables switching between 1/3-duty vacuum fluorescent (VF) display tube universal display tube control. MSC1230 consists 112-bit shift register, 111-bit latch, 10-bit digital dimming circuit, segment drivers, grid drivers. MSC1230 provides interface with microcomputer only three signal lines: DATA-IN, CLOCK. using chip select function, DATA-IN CLOCK signal lines shared other peripheral circuits.
FEATURES
Power supply voltage VDD=8 (built-in regulator logic circuit) Operating temperature range Ta=-40 37-segment driver outputs IOH=-6 -0.8 3-grid driver outputs IOH=-30 -0.8 Built-in digital dimming circuit (10-bit resolution) Switchable between 1/3-duty display tube universal display tube* When left open Selects universal display tube (The grids GRID1, GRID2, GRID1+GRID2 turned repeatedly this order) When used Selects 1/3-duty display tube (The grids GRID1, GRID2, GRID3 turned repeatedly this order) Built-in oscillation circuit (external Built-in Power-On-Reset circuit Package: 56-pin plastic (QFP56-P-910-0.65-2K)(Product name: MSC1230GS-2K) universal display tube display tube which, like gate array, user freely design characters patterns master layer (grid). (Pattern created without gaps between grids.) Since outline dimensions display tube grid layout predetermined, desired patterns displayed short time. universal display tube used display parts audio equipment, household appliances, automobile equipment.
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Semiconductor
MSC1230
BLOCK DIAGRAM
SEG37 VDD1 VDD2 DGND REG. LGND Control Circuit DATA-IN CLOCK 107106 111-bit Latch 111-bit data 112-bit Shift Register 10-bit data 10-bit Latch 37-Segment Control 37-bit Segment Driver 37bit data
SEG1
GRID3
GRID1
VDD3
3-bit Grid Driver VDD=8 VCC=5.0V (Regurator)
10-bit data OSC0 OSC1 10-bit Digital Diming
112bits=0: Digital Dimming Mode 112bits=1: Data Input Mode
Timing Generator
INPUT OUTPUT CONFIGURATION Schematic Diagram Schematic Diagram Schematic Diagram Logic Portion Input Circuit Logic Portion Input Circuit Driver Output Circuit
Reg.)
Reg.)
INPUT
COLn
OUTPUT
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Semiconductor
MSC1230
CONFIGURATION (TOP VIEW)
SEG19 SEG20 SEG21 SEG22 SEG23 SEG24 SEG25 SEG26 SEG27
SEG28 SEG29
SEG30 SEG31 SEG32
SEG33
SEG34
SEG35
SEG36
SEG37
LGND
OSC1
OSC0
CLOCK
connection 56-Pin Plastic
DATA-IN
SEG18 SEG17 SEG16 SEG15
SEG13
SEG14
SEG12
SEG11
SEG10
DGND
VDD2
VDD1
SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 GRID1 GRID2 GRID3 VDD3
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Semiconductor
MSC1230
DESCRIPTION
Symbol SEG1 Type Decription Output pins segment signals driving display tube.
GRID1
Output pins grid signals driving display tube. GRID3 output used when universal display tube used. When level, this selects 1/3-duty display tube. When level when used open state), this selects universal display tube. series data input from microprocessor. Data input shift register rising edge CLOCK signal. Serial clock input pin. Data input through DATA-IN rising edge serial clock. oscillator connecting pins. Connect resistor between OSC1 OSC0 pins capacitor between OSC0 ground. Chip select input pin. Circuit operation valid when this level. Power supply pins. When using these pins, connect each them power supply. Ground pins driver logic. These pins connected with each other when they used.
DATA-IN CLOCK
OSC0 OSC1 VDD1 VDD2 VDD3 DGND LGND
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Semiconductor
MSC1230
ABSOLUTE MAXIMUM RATINGS
Parameter Supply Voltage Input Voltage Storage Temperature Power Dissipation Symbol TSTG Condition inputs Ta=85°C Ratings -0.3 -0.3 +6.0 +150 Unit
RECOMMENDED OPERATING CONDITIONS
Parameter Supply Voltage High Level Input Voltage High Level Input Voltage Level Input Voltage Level Input Voltage Clock Frequency Oscillation Frequency Frame Frequency Operating Temperature Symbol VIH1 VIH2 VIL1 VIL2 fOSC Condition inputs except OSC0 OSC0 inputs except OSC0 OSC0 R=4.7 C=10 fOSC=3.2 Min. Typ. Max. Unit
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Semiconductor
MSC1230
ELECTRICAL CHARACTERISTICS
Characteristics
(Ta=-40 +85°C, VDD=8 18V) Parameter Input Voltage Input Voltage Input Voltage Input Voltage Input Current Input Current Input Current Input Current Output Voltage Output Voltage Symbol VIH1 VIH2 VIL1 VIL2 IIH1 IIH2 IIL1 IIL2 VOH1 VOH2 VOL1 Output Voltage VOL2 VOL3 Supply Current Condition VIH=5 VIH=5 VIL=0 VIL=0 VDD=9.5 IOH1=-6 VDD=9.5 IOH2=-30 VDD=9.5 IOL1=500 VDD=9.5 IOL2=200 VDD=9.5 IOL3=2 fosc=3.2 Load Min. -200 -0.6 -0.8 -0.8 Max. -0.1 Unit
input pins except OSC0 OSC0 CLOCK DATA-IN pins SEG1 SEG37 pins GRID1 GRID3 pins SEG1 SEG37 GRID1 GRID pins
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Semiconductor Characteristics
Parameter Oscillation Frequency External Input Frequency into OSC0 Clock Frequency Clock Pulse Width DATA Setup Time DATA Hold Time Pulse Width Time Setup Time CS-Clock Time Hold Time Clock-CS Time CS-All Data Output Delay Slew Rate (All Drivers) Time Power-on Hold Time Power-off Rise Time Power-on Symbol fOSC fOSCI tCSW tCSL tCSS tCSH tODS tPCS tPOF tPRZ Condition R=4.7 C=10 External input only CI=100 CI=100 t=20% When monuted unit VDD=0.0 When monuted unit
MSC1230
(Ta=-40 +85°C, VDD=8 18V) Min. Max. Unit
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Semiconductor
MSC1230
tcss CLOCK DATA-IN
tcsw tCSH
tCSL
3.8V 0.8V 3.8V 0.8V 3.8V 0.8V
VALID
VALID
VALID
Figure Data Input Timing
tODS SEG1-37 GRID1-3
tCSW tODS
3.8V 0.8V
Figure GRID Driver Output Timing
VDD1, tPCS tPOF
tPRZ
3.8V 0.8V
Figure Power-on Timing
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Semiconductor
MSC1230
FUNCTIONAL DESCRIPTION
Power-on Reset When power turned initialized internal power-on reset circuit. status internal circuit after initialization follows: contents shift registers latches "0". digital dimming duty cycle "0". Data Input Data input DATA-IN valid only when level. input data DATA-IN shifted into shift registers rising edge clock. data automatically loaded latches rising edge pin. When "1", enters display data input mode total bits data input. When "0", enters digital dimming data input mode total bits data input. [Data Format] Display Data Input Mode Input Data Display Data Mode Select Data (M0)
D111 D110 Mode Data bit)
bits bits
First
Display Data (111 bits)
correspondence between segment outputs shift registers
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Semiconductor Input Format data
Byte D104 D103 D111 D102 D110 D101 D109 D100 D106 D105
MSC1230
D108 D107
Digital Dimming Data Input Mode This data consists bits. output duty changes range 0/1024 (0%) 1016/1024 (99%) each grid. 10-bit digital dimming data input from LSB. Input Data bits Digital Dimming Data bits Mode Select Data
Mode Data (1bit) (MSB) First
Dimming Data bits)
INPUT DATA
(LSB) DUTY CYCLE 0/1024 1/1024 1016/1024 1016/1024
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Semiconductor Input Format Dimming Data
MSC1230
Byte
Function Mode
FUNCTION Display Data Input Mode Digital Dimming Data Input Mode
GRID/SEG Driver Operation Digital Dimming Figures show timing GRID drivers universal mode duty mode, respectively. Figure shows example timing digital dimming operation duty mode. (When duty cycle dimming data 508/1024)
GRID1 3072 time display cycle)
GRID2
GRID3 time SEG1-37 1019 time time=4/fOSC time 1024 time time
Figure Duty Cycle Timing (Universal Mode)
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Semiconductor
MSC1230
GRID1 3072 time display cycle)
GRID2
GRID3 time SEG1-37 1019 time time 1024 time time
Figure Duty Cycle Timing (1/3 Duty Mode)
GRID1
3072 time GRID2
GRID3 SEG1-37 1024
Figure Duty Cycle Timing (1/3 Duty Mode)
(When digital dimming data changed from 3F8H 1FFH) 1016 time time
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Semiconductor
MSC1230
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, 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).
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Semiconductor MSC1230 This version: Nov. 1997 MSC1230 Previous ve

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