Low Voltage LCD Controller & Driver - RAM Mapping 32×4 LCD Driver

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. TheHT16L21 device communicates with most microprocessors/microcontrollers via a two-wire bidirectional I2C or a three-wire SPI interface.

Features:

• 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

Specification:

• VDD: 1.8V~5.5V
• segment x common: 32x4
• LCD voltage: 2.4V~6.0V
• bias: 1/2, 1/3
• LED driver: 8x1
• interface: I²C, SPI 3-Wire
• case: 44LQFP