TM1621B

TM1621B is a memory-mapped, multi-function LCD driver. Its software-configurable features make it suitable for a wide range of LCD applications, including LCD modules and display subsystems. Only 4 or 5 pins are required to interface a host controller with the TM1621B. The TM1621B also features a power-saving command to reduce system power consumption.

Key features

• Operating voltage: 2.4～5.2V
• Built-in 256KHz RC oscillator
• Optional external 32KHz crystal or 256KHz frequency source input
• Selectable 1/2 or 1/3 bias and 1/2, 1/3, or 1/4 duty cycle
• On-chip time base frequency source
• Two selectable buzzer frequencies
• Power-saving command for reduced power consumption
• Built-in time base generator and watchdog timer (WDT)
• Time base or watchdog timer overflow output
• Eight time base/watchdog timer clock sources
• One 32×4 LCD driver
• One built-in 32×4-bit display RAM
• 4-wire serial interface
• On-chip LCD drive frequency source
• Software-configurable features
• Data mode and command mode instructions
• Three data access modes
• VLCD pin for adjusting LCD operating voltage
• Package types: SSOP48, LQFP44