Logic voltage: High-voltage output: VDD-35V max. Multiple display outp

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Logic voltage: High-voltage output: VDD-35V max. Multiple display outp

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HT16515 1/12 Duty Controller
Logic voltage: High-voltage output: VDD-35V max. Multiple display output ports (20mA max.) external resistors necessary driver output
(16-segment 12-digit 24-segment 4-digit)
matrix scanning steps dimmer circuit
(provides PMOS open-drain pull-low resistor output)
Serial interface with (CLK, 44-pin package
Applications
Consumer products panel function control Industrial measuring instrument panel function control Other similar applications panel function control
General Description
HT16515 (Vacuum Fluorescent Display) controller/driver that driven 1/12 duty factor. consists segment output lines, grid output lines, segment/grid output drive lines, output ports, control circuit, display memory, scan circuit. Serial data inputs HT16515 through three-line serial interface. This controller/driver ideal peripheral device.
Block Diagram
ltip
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HT16515
Assignment
Assignment
substrate should connected layout artwork.
Chip Size:
Rev. 1.00
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HT16515
Coordinates
-962.50 -962.50 -962.50 -962.50 -962.50 -962.50 -962.50 -962.50 -962.50 -962.50 -962.50 -689.60 -460.45 -344.25 -242.85 -141.45 -40.05 61.35 162.75 264.15 365.55 466.95 600.00 495.00 380.20 275.20 -107.20 -235.60 -366.00 -471.00 -576.00 -681.00 -786.00 -772.45 -595.30 -595.30 -595.30 -595.30 -595.30 -595.30 -595.30 -595.30 -595.30 -595.30 834.10 834.10 834.10 834.10 834.10 834.10 834.10 987.30 987.30 987.30 987.30 610.30 508.90 407.50 306.10 204.70 103.30 1.90 -99.50 -200.90 -317.10 -624.50 -754.00 -652.60 -551.20 -449.80 -348.40 -247.00 -145.60 0.50 130.50 382.05 734.05 594.40 594.40 594.40 594.40 594.40 594.40 594.40 594.40 594.40 594.40 756.80 Unit:
Description
Name LED3~LED0 Description driver output ports. This CMOS output maximum driving current +20mA. Connected external resistor oscillator circuit. Data output pin, output serial data falling edge shift clock, starting from lower bit. This N-ch open-drain output pin. Data input pin, input serial data rising edge shift clock, starting from lower bit. Clock input pin. Reads serial data rising edge, outputs data falling edge. Initializes serial interface rising falling edge HT16515. Then waits receive command. Data input after fallen processed, current processing stopped, serial interface initialized. While high, ignored. Key-in data input these pins latched display cycle. Negative power supply, ground Positive power supply High voltage output, segment output pins, dual function source. This PMOS open-drain pull-low resistor output. power supply High voltage output, these pins selectable segment grid output. This PMOS open-drain pull-low resistor output. High voltage output, grids output pin. This PMOS open-drain pull-low resistor output.
14~29 31~38 39~42
Key0, Key1 Seg1/KS1~Seg16/KS16 Seg17/Grid12~ Seg24/Grid5 Grid4~Grid1
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HT16515
Approximate Internal Connections
Absolute Maximum Ratings
Supply Voltage .VSS-0.3V VSS+6.0V Input Voltage.VSS-0.3V VDD+0.3V Operating Temperature.-25°C 75°C Storage Temperature .-50°C 125°C
Note: These stress ratings only. Stresses exceeding range specified under Maximum cause substantial damage device. Functional operation this device other conditions beyond those listed specification implied prolonged exposure extreme conditions affect device reliability.
D.C. Characteristics
Symbol fOSC IOL1 IOH1 IOH21 IOH22 IOL3 VOH1 VOL1 VOL2 Parameter Logic Supply Voltage Supply Voltage Oscillation Frequency Output Pull-low Resistor Operating Current Driver Leakage Current Sink Current Source Current Test Conditions ROSC=82kW Driver output load, display VO=VDD-30V, driver VOL=1V, LED0~LED3 VOH=0.9VDD, LED0~LED3 VOH=VDD-2V VOH=VDD-2V VOL=0.4V CLK, DIN, LED0~LED3, IOH1=-3mA LED0~LED3, IOL1=20mA IOL2=4mA Conditions Min. 0.7VDD 0.9VDD Typ. 0.35 Max. VDD-35 0.3VDD
Ta=25°C Unit
Segment 1~16 Source Current Segment 17~24, Grid Source Current Sink Current Input Voltage Input Voltage Hysteresis Voltage High-level Output Voltage Low-level Output Voltage Low-level Output Voltage
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HT16515
A.C. Characteristics
Symbol tPHL tPLH tmax Rise Time Fall Time Maximum Clock Frequency Input Capacitance Clock Pulse Width Strobe Pulse Width Data Setup Time Data Hold Time Clock-Strobe Time Wait Time Parameter Test Conditions Logic Supply Voltage Conditions CLK®DO CL=15pF, RL=10kW CL=300pF, S1~S16 CL=300pF, G1~G4 S17/G12~S24/G5 CL=300pF, Duty=50% rising edge rising edge rising edge falling edge Min. Typ. Max. Ta=25°C Unit
Functional Description
Display Display Mode static display stores data transmitted from external device HT16515 through serial interface. contents directly mapped contents driver. Data accessed through data setting, address setting display control commands. assigned addresses 8-bit unit follows:
Dimming Control HT16515 provides 8-step dimmer function display controlling 3-bit binary command code. full pulse width grid signal divided into uniform sections (pulse width modulation) technology. uniform sections available form 8-step dimmer 3-bit binary code. 8-step dimmer includes 1/16, 2/16, 4/16, 10/16, 11/16, 12/16, 13/16 14/16. 1/16 pulse width indicates minimum lightness. 14/16 pulse width represents maximum lightness (Refer display control command). Matrix Key-Input Data Storage matrix scans series states each level strobe signal (Seg1/K1~Seg16/K16) output HT16515. strobe signal outputs time-multiplexed signals from Seg1/K1~Seg16/K16. states inputs sampled strobe signal Seg1/K1~Seg16/K16 latched into register.
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HT16515
matrix made matrix, shown below.
data each stored illustrated below, read with read command, starting from least significant bit.
Commands Commands display mode status driver. first byte input HT16515 through after fallen, regarded command. high while commands/data transmitted, serial communication initialized, commands/ data being transmitted valid (however, commands/data previously transmitted remains valid).
Display mode setting commands
Port port CMOS output configuration. Data written port with write command, starting from least significant bit. application (see application circuits), user adopts internal NMOS device driver component connecting VDD. When this port corresponding lights when turns off. data bits through ignored.
These commands initialize HT16515 select number segments number grids (1/4~1/12 duty, segments). When these commands executed, display forcibly turned off, scanning also stopped. resume display, display command must executed. same mode selected, nothing happens.
Note:
Power-on status: 12-digit, segment mode selected.
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HT16515
Data setting commands
These commands data write data read modes.
ttin itte ttin
Note: power-on status: normal mode operation address increment mode set.
Address setting commands
These commands address display memory.
address higher set, data ignored until valid address set. Note: power-on status: address 00H.
Display control commands
tity
Note: power-on status: 1/16 pulse width display turned off. scanning will stopped during power-on status.
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HT16515
Timing Diagrams
Scanning Display Timing
Note: cycle scanning consists frames, data matrixes stored RAM.
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HT16515
Serial Communication Format
Reception (command/data write)
Transmission (data read)
sure connect external pull-high resistor this (1kW 10kW). Note: When data read, wait time necessary.
Updating display memory incrementing address
Note: Command sets display mode Command sets data Command sets address Data transfers display data bytes max.) Command controls display
Updating specific addresses
Note: Command sets data Command sets address Data: display data
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HT16515
Application Circuits
Note:
ROSC=82kW oscillator resistor R1=1~10kW external pull-high resistor R2~R6=750W~1.2kW R7~R8=10kW external pull-low resistor D1~D6=1N4001 Ef=Filament voltage C=0.1mF~1.0mF
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HT16515
Package Information
44-pin Outline Dimensions
Symbol
Dimensions Min. 9.90 9.90 1.90 0.73 0.10 Nom. 0.80 0.30 0.10 Max. 13.40 10.10 13.40 10.10 2.20 2.70 0.93 0.20
Rev. 1.00
December 2003
HT16515
Holtek Semiconductor Inc. (Headquarters) No.3, Creation Science Park, Hsinchu, Taiwan Tel: 886-3-563-1999 Fax: 886-3-563-1189 http://www.holtek.com.tw Holtek Semiconductor Inc. (Taipei Sales Office) 4F-2, 3-2, YuanQu St., Nankang Software Park, Taipei 115, Taiwan Tel: 886-2-2655-7070 Fax: 886-2-2655-7373 Fax: 886-2-2655-7383 (International sales hotline) Holtek Semiconductor Inc. (Shanghai Sales Office) Floor, Building No.889, Shan Rd., Shanghai, China 200233 Tel: 021-6485-5560 Fax: 021-6485-0313 http://www.holtek.com.cn Holtek Semiconductor Inc. (Shenzhen Sales Office) 43F, Plaza, Shen Zhong Road, Shenzhen, China 518031 Tel: 0755-8346-5589 Fax: 0755-8346-5590 ISDN: 0755-8346-5591 Holtek Semiconductor Inc. (Beijing Sales Office) Suite 1721, Jinyu Tower, A129 West Xuan Street, Xicheng District, Beijing, China 100031 Tel: 010-6641-0030, 6641-7751, 6641-7752 Fax: 010-6641-0125 Holmate Semiconductor, Inc. (North America Sales Office) 46712 Fremont Blvd., Fremont, 94538 Tel: 510-252-9880 Fax: 510-252-9885 http://www.holmate.com Copyright 2003 HOLTEK SEMICONDUCTOR INC. information appearing this Data Sheet believed accurate time publication. However, Holtek assumes responsibility arising from specifications described. applications mentioned herein used solely purpose illustration Holtek makes warranty representation that such applications will suitable without further modification, recommends products application that present risk human life malfunction otherwise. products authorized critical components life support devices systems. Holtek reserves right alter products without prior notification. most up-to-date information, please visit site http://www.holtek.com.tw.
Rev. 1.00
December 2003

Logic voltage: High-voltage output: VDD-35V max. Multiple display outp

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