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HT1635B - 44 x 8 LED Driver

Download the HT1635B datasheet PDF. This datasheet also covers the HT1635A variant, as both devices belong to the same 44 x 8 led driver family and are provided as variant models within a single manufacturer datasheet.

Description

The HT1635A/HT1635B is a memory mapping LED display controller/driver.

The maximum display capacity of the device is 352 patterns composed of 44 rows and 8 commons.

The device can generate 16 LED illumination levels using software controlled PWM circuitry.

Features

  • Operating voltage: 2.4V~5.5V.
  • LED display -- 44 row and 8 Columns.
  • 88×4 bit RAM display data storage.
  • 16-level PWM brightness control.
  • Integrated 256kHz RC oscillator.
  • I2C-bus or 4-wire serial interface.
  • Data mode & command mode instructions.
  • Cascade function for extend.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (HT1635A-Holtek.pdf) that lists specifications for multiple related part numbers.

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Other Datasheets by Holtek Semiconductor

Part Number Description
HT1635 44 x 8 LED Driver
HT1635A 44 x 8 LED Driver
HT1632C 32 x 8 & 24 x 16 LED Driver
HT12B Encoder
HT12C Encoder

Full PDF Text Transcription

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HT1635A/HT1635B 44×8 LED Driver Features • Operating voltage: 2.4V~5.5V • LED display -- 44 row and 8 Columns • 88×4 bit RAM display data storage • 16-level PWM brightness control • Integrated 256kHz RC oscillator • I2C-bus or 4-wire serial interface • Data mode & command mode instructions • Cascade function for extend applications • Selectable NMOS open drain output driver and PMOS open drain output driver for COM lines • 64-pin LQFP package Applications • Industrial control displays • Digital clocks, thermometers, counters, electronic meters • Instrumentation readouts • Other consumer applications • LED displays General Description The HT1635A/HT1635B is a memory mapping LED display controller/driver.
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