Logic voltage: High-voltage output: VDD-35V max. Multiple display (11-

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Logic voltage: High-voltage output: VDD-35V max. Multiple display (11-

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HT16512 1/11 Duty Controller
Logic voltage: High-voltage output: VDD-35V max. Multiple display (11-segment 11-digit 16-segment 4-bit general purpose input port external resistors necessary driver output
4-digit)
matrix scanning steps dimmer circuit output ports
(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 application panel function control
General Description
HT16512 (Vacuum Fluorescent Display) controller/driver that driven 1/11 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 HT16512 through three-line serial interface. This controller/driver ideal peripheral device MCU.
Block Diagram
ltip
Rev. 1.10
September 2003
HT16512
Assignment
Description
Name SW0~SW3 Description 4-bit general purpose input port Output serial data falling edge shift clock, starting from order bit. This NMOS open-drain output pin. Input serial data rising edge shift clock, starting from order bit. Negative power supply, ground Reads serial data rising edge, outputs data falling edge. Initializes serial interface rising falling edge HT16512. Then waits receive command. Data input after fallen processed command. While command data processed, current processing stopped, serial interface initialized. While high, ignored. Keying data input these pins latched display cycle. Posistive power supply Segment source output pins (dual function). This PMOS open-drain pull-low resistor output. Segment driver output pins (segment only). This PMOS open-drain pull-low resistor output. Segment Grid driver output pins. These pins selectable segment grid driving. This PMOS open-drain pull-low resistor output. power supply Grid driver output pins (Grid only). This PMOS open-drain pull-low resistor output. driver output ports. This CMOS output pin. Connected external resistor oscillator circuit.
10~13 15~20 21~25
K0~K3 S0/K0~S5/K5 S6~S10
28~31 37~32 42~39
S11/G10~S15/G6 G0~G5 LED0~LED3
Rev. 1.10
September 2003
HT16512
Approximate Internal Connections
Absolute Maximum Ratings
Supply Voltage .VSS-0.3V VSS+5.5V 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 Segment/Key Source Current Segment/Grid Source Current Sink Current Input Voltage Input Voltage High-level Output Voltage Low-level Output Voltage Low-level Output Voltage Test Conditions ROSC=51kW Driver output load, display VO=VDD-30V, driver VOL=1V, LED0~LED3 VOH=0.9VDD LED0~LED3 VOH=VDD-2V S0/K0~S5/K5, S6~S10 VOH=VDD-2V G0~G5, S11/G10~S15/G6 VOL=0.4V LED0~LED3, IOH1=-1mA LED0~LED3, IOL1=20mA IOL2=4mA Conditions Min. 0.7VDD 0.9VDD Typ. Max. VDD-35 0.3VDD
Ta=25°C Unit
Rev. 1.10
September 2003
HT16512
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 Propagation Delay Time Conditions CLK®DO CL=15pF, RL=10kW CL=300pF, S0~S10 CL=300pF, G0~G5, S11/G10~S15/G6 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 organized into bits stores data transmitted from external device HT16512 through serial interface. contents directly mapped contents driver. Data accessed through data setting, address setting display control commands. assigned addresses 8-bit unit follows:
uniform sections available form steps 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 (S0/K0~S5/K5) output HT16512. strobe signal outputs time-multiplexed signals from S0/K0~S5/K5. states inputs K0~K3 sampled strobe signal S0/K0~S5/K5 latched into register. matrix made matrix, shown below.
Dimming Control HT16512 provides 8-step dimmer function display controlling 3-bit binary command code. full pulse width grid signal divides into uniform sections (pulse width modulation) technology.
Rev. 1.10
September 2003
HT16512
data each stored illustrated below, read with read command, starting from least significant bit.
Display mode setting commands
These commands initialize HT16512 select number segments number grids (1/4~1/11 duty, segments segments). When these commands executed, display forcibly turned off, scanning also stopped. resume display, display command must executed. same mode selected, nothing happens.
ttin
Port port belongs CMOS output configuration. Data written port with write command, starting from least 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.
Data setting commands
These commands data write data read modes.
ttin
ttin itte ttin
Data HT16512 provides extra 4-bit general input port. data provided with available binary code. data read with read command, starting from least significant bit. Bits through data
Address setting commands
These commands address display memory.
address higher set, data ignored until valid address set.
Display control commands
tity ttin
Commands Commands display mode status driver. first byte input HT16512 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).
Rev. 1.10
September 2003
HT16512
Timing Diagrams
Scanning Display Timing
illa
Rev. 1.10
September 2003
HT16512
Serial Communication Format
Reception (command/data write)
Transmission (data read)
Updating display memory incrementing address
Updating specific addresses
Rev. 1.10 September 2003
HT16512
Application Circuits
Note:
ROSC=51kW oscillator resistor R1=1~10kW external pull-high resistor R2~R5=750W~1.2kW R6~R9=10kW external pull-low resistor D1~D6=1N4001 Ef=Filament voltage
Rev. 1.10
September 2003
HT16512
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. 1.10
September 2003
HT16512
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. (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 (Shanghai) Inc. Floor, Building No.889, Shan Rd., Shanghai, China Tel: 021-6485-5560 Fax: 021-6485-0313 http://www.holtek.com.cn Holtek Semiconductor (Hong Kong) Ltd. Block 3/F, Industrial Building, 777-779 Cheung Rd., Kowloon, Hong Kong Tel: 852-2-745-8288 Fax: 852-2-742-8657 Holmate Semiconductor, Inc. 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. 1.10
September 2003

Logic voltage: High-voltage output: VDD-35V max. Multiple display (11-

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