T6K14

The T6K14 is a driver for a small-to-medium-sized dot matrix graphic LCD, especially for reflective color STN LCD. It realizes a 4-color or 4-gray-scale display. This driver can be interfaced to the MPU via an 8-bit (68/80-series) or a serial interface, and is operated asynchronously with the MPU. Since the T6K14 contains a CR oscillator, it can generate the timing signals required for the LCD. Since the T6K14 has 128 outputs for the LCD drive (segment) signals that constitute display data, 65 outputs for the LCD drive (common) signals that constitute scanning signals and 65 × 128 × 2 bits display RAM, this single device allows you to drive an LCD panel comprised of up to 128 × 64 dots and 128 icons with a minimize of power requirement. It has 4 gray-scale function. The display RAM of this driver is a 2 port RAM so that the MPU accesses without any wait time. It has various power circuits such as a voltage regulators, voltage divider resistors, a power supply op-amp, a contrast control circuit, a temperature compensation circuit, and DC-DC converter ( ×2, ×3, ×4, ×5 ). All these T6K14s enable the LCD panel to be driven with a single power supply.