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Holtek Semiconductor is a leading professional IC design house in Taiwan having its major business activities focused in the area of microcontroller and peripheral component design and marketing. From its origins in 1998, the company has continuously focused its energies in the advancement of new product development and skills innovation. The company's ability to keep in line with market trends, has given Holtek the means of releasing a wide range of highly successful and extremely competitive IC devices。

Holtek supplies a range of power management devices, LCD and LED drive/control chips, ultra-high resolution fingerprint identification sensors and a variety of sensor modules and other peripheral devices, ensuring that customers are supplied with a functionally comprehensive set of device solutions.
LCD Display ICs 

Part No. VDD Max. Resolution
Segment × Comm
LCD Voltage Bias Gray Scale Serial Data Built-in OSC. Ext.Crystal Package
RAM Mapping LCD Controller & Driver
HT1620 2.4V~3.3V 32×4, 32×3, 32×2 3/2VDD 1/2, 1/3 -- 1 -- 64LQFP
HT1620G
(产品终止讯息)
2.4V~3.3V 32×4, 32×3, 32×2 3/2VDD 1/2, 1/3 -- 1 -- Gold Bump
HT1621 2.4V~5.2V 32×4, 32×3, 32×2 ≤VDD 1/2, 1/3 -- 1 44LQFP,48SSOP/LQFP
HT1621G 2.4V~5.2V 32×4, 32×3, 32×2 ≤VDD 1/2, 1/3 -- 1 Gold Bump
HT1622 2.7V~5.2V 32×8 ≤VDD 1/4 -- 1 -- 44/52/64LQFP
HT1622G 2.7V~5.2V 32×8 ≤VDD 1/4 -- 1 -- Gold Bump
HT16220 2.7V~5.2V 48×8 ≤VDD 1/4 -- 1 -- 64LQFP
HT1623 2.7V~5.2V 64×8 ≤VDD 1/4 -- 1 100LQFP
HT1625 2.7V~5.2V 48×16 ≤VDD 1/4 -- 1 100LQFP
HT1626 2.7V~5.2V 48×16 ≤VDD 1/5 -- 1 100LQFP
HT1628 2.4V~5.5V 116×2,116×1 ≤VDD 1/1, 1/2 -- 1 128LQFP
HT1629G 2.4V~5.5V 240×2, 240×1 ≤VDD 1/1, 1/2 -- 1 Gold Bump
HT1647 2.7V~5.2V 64×16 ≤VDD 1/4, 1/5 -- 1 100LQFP
HT1647G
(产品终止讯息)
  64×16 ≤VDD 1/4, 1/5 4 4 Gold Bump
HT1650   80×16, 64×32 ≤VDD 1/5, 1/6 -- 1 128QFP
Part No. VDD Max. Resolution
Segment × Comm
LCD Voltage Bias Gray Scale Serial Data Built-in OSC. Ext.Crystal
High Noise Immunity LCD Controller & Driver
HT16C21 2.4V~5.5V 20×4, 16×8 ≤VDD 1/3, 1/4 -- I2C -- 16NSOP
20/24/28SOP
HT16C22 2.4V~5.5V 44×4 ≤VDD 1/2, 1/3 -- I2C -- 48/52LQFP
HT16C22G 2.4V~5.5V 44×4 ≤VDD 1/2, 1/3 -- I2C   Gold Bump
HT16C23 2.4V~5.5V 56×4, 52×8 2.4V~5.5V 1/3, 1/4 -- I2C -- 48/64LQFP
HT16C23G 2.4V~5.5V 56×4, 52×8 2.4V~5.5V   -- I2C -- Gold Bump
HT16C24 2.4V~5.5V 72×4, 68×8, 60×16 2.4V~5.5V 1/3, 1/4, 1/5 -- I2C -- 64/80LQFP
HT16C24G 2.4V~5.5V 72×4, 68×8, 60×16 2.4V~5.5V   -- I2C -- Gold Bump
HT16K23 2.4V~5.5V 20×4 =VDD 1/3 -- I2C 20×1 28SOP
HT16K23 2.4V~5.5V 16×8 =VDD 1/4 -- I2C 16×1 28SOP
HT9B92 2.4V~5.5V 36×4 ≤VDD 1/2, 1/3 I2C -- 48LQFP/TSSOP
HT9B92G 2.4V~5.5V 40×4 ≤VDD 1/2, 1/3 I2C -- Gold Bump
HT9B95A 2.4V~5.5V 35×8 2.4V~5.5V 1/4 I2C -- 48TSSOP/52LQFP
HT9B95B 2.4V~5.5V 43×4 2.4V~5.5V 1/3 I2C -- 52LQFP
HT9B95B 2.4V~5.5V 39×8 2.4V~5.5V 1/4 I2C -- 52LQFP
HT9B95G 2.4V~5.5V 43×4 2.4V~5.5V 1/3 I2C -- Gold Bump
HT9B95G 2.4V~5.5V 39×8 2.4V~5.5V 1/4 I2C -- Gold Bump
Part No. VDD Max. Resolution
Segment × Comm
LCD Voltage Bias Power
Saving Mode
Interface LED Keyscan Package
Low Voltage LCD Controller & Driver
HT16L21 1.8V~5.5V 32×4 2.4V~6.0V 1/2, 1/3 -- I2C, SPI 3-Wire 8 -- 44LQFP
HT16L23 1.8V~5.5V 52×4, 48×8 2.4V~6.0V 1/3, 1/4 -- I2C, SPI 3-Wire 8 -- 64LQFP
HT16LK24 1.8V~5.5V 67×1, 67×2, 67×3,67×4, 63×8 2.4V~6.0V 1/1, 1/2, 1/3, 1/4 I2C, SPI 3-Wire 12(128 for each dot) 4x12 64/80LQFP
Part No. VDD Max. Resolution
Segment × Comm
LCD Voltage Bias Interface Gray Scale Charge Pump Contrast Adjustment GPO Package
High Operating Voltage LCD Controller & Driver (With Power Saving Mode)
HT16H25 2.4V~5.5V 60×16 2.5~12V Interface 1/1~1/5 I2C, SPI 3-Wire ×2, ×3, ×4, ×5 5-bit 4CH 100LQFP



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