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 (VLCD): 2.4V~6.0V
- External VLCD 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