The HT16L21 device is a memory mapping and multi-function LCD controller/driver. The display segments of the device are 128 patterns (32 segments and 4 commons) display. It can also support LED drive outputs on certain Segment pins. The software configuration feature of the HT16L21 device makes it suitable for multiple LCD applications including LCD modules and display subsystems. The  HT16L21 device communicates with most microprocessors/microcontrollers via a two-wire bidirectional I²C or a three-wire SPI interface.

• Logic operating voltage: 1.8V~5.5V
• LCD operating voltage (V_LCD): 2.4V~6.0V
• External V_LCD pin to supply LCD operating voltage
• Internal 32kHz RC oscillator
• Bias: 1/2 or 1/3; Duty:1/4
  Internal LCD bias generation with voltage-follower buffers
• Integrated regulator to adjust LCD operating voltage: 3.0V, 3.2V, 3.3V, 3.4V, 4.4V, 4.5V, 4.6V, 5.0V
• Integrated LED driver
• Support I²C or SPI 3-wire serial interface
  controlled by IFS pin
• Four selectable LCD frame frequencies:
  64Hz or 85.3Hz or 128Hz or 170.6Hz
• 32×4 bits RAM for display data storage
• Max. 32×4 pixel: 32 segments and 4 commons
• Support two driver output mode segment/LED on SEG24~SEG31/LED7~LED0
• Versatile blinking modes: off, 0.5Hz, 1Hz, 2Hz
• R/W address auto increment
• Low power consumption
• Manufactured in silicon gate CMOS process
• Package types: 44LQFP
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• 需要了解更多HOLTEK合泰的IC应用方案，请直接联系:
• 深圳市昊海鑫科技有限公司
  电话：0755-33561021  传真：0755-85298357
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