TM1621B LCD Driver & Controller IC – 32×4 Segment – SSOP-48 – Titan Micro

The TM1621B from Titan Micro Electronics is a highly integrated RAM-mapped LCD driver and controller ICdesigned for applications requiring multi-segment Liquid Crystal Display (LCD) control. Packaged in a compact SSOP-48 (300 mil) surface-mount package, it supports 32 segments × 4 commons, making it ideal for digital meters, handheld devices, clocks, home appliances, and general embedded display systems.

The TM1621B communicates with microcontrollers via a 4-wire serial interface, enabling efficient and reliable data transfer with minimal MCU pin usage. It features a built-in 256 kHz RC oscillator and optionally accepts an external 32 kHz or 256 kHz clock input for optimized timing accuracy.

Offering flexible display configurations, the IC supports multiple bias modes (1/2, 1/3) and duty cycles (1/2, 1/3, 1/4)to accommodate various LCD glass requirements. Integrated functions include a time-base generator, watchdog timer (WDT), and buzzer driver output, reducing the need for additional external components.

With a wide 2.4V to 5.2V operating voltage range, the TM1621B is suitable for both low-power and standard embedded designs.

Key Specifications:

• Manufacturer: Titan Micro Electronics (TM)

• Part Number: TM1621B

• Function: LCD controller/driver

• Display Support: 32 segments × 4 commons

• Interface: 4-wire serial (MCU compatible)

• Operating Voltage: 2.4V to 5.2V

• Oscillator:
  – Built-in 256 kHz RC oscillator
  – Supports external 32 kHz or 256 kHz clock

• Display Modes:
  – Bias: 1/2 or 1/3
  – Duty: 1/2, 1/3, or 1/4

• Built-In Features:
  – Time-base generator
  – Watchdog timer (WDT)
  – Buzzer driver output

• Package: SSOP-48 (300 mil width), surface mount

Package Includes:
1 x TM1621B LCD Driver & Controller IC

Note: Image is for representation purpose only.