TM1723 is a LCD driver control IC with keyboard scanning interface. It integrates MCU digital interface, data latch, LCD driver, keyboard scanning, and RGB backlit driver. This product has excellent performance and reliable quality. It does not require modification of the decoding board's bottom layer instructions, and it is fully compatible with the instruction set of existing LED driver ICs. The decoding boards that support LED display can be directly connected to the LCD display panel without the need to add a single-chip microcomputer for key scanning (or through the decoding board to scan keys) and do not need to use HT6221 to scan keys. It also supports PWM backlit driver and SW general input expansion port. It is mainly used in the display screen drive of products such as VCR, VCD, DVD, and home theater. It adopts SOP32 and other packaging forms.
This manual describes the TM1723 LCD driver IC, which integrates an MCU, digital interface, and back‑light control for LCD panels. It is compatible with standard LED drivers and supports external LCD modules without additional microcontrollers.
The document details the pin functions, register map, serial interface (CCLK, STB, DIO), PWM channels, operating modes, and package information (SOP32). It also includes timing specifications and data formats needed for proper integration into VCR, DVD, and home‑theater systems. This manual is written in Japanese.
| Maximum LCD size | 20 x 4 characters |
|---|---|
| Maximum character columns | 4 x 3 characters |
| PWM channels | 64 PWM outputs |
| Serial interface pins | CCLK, STB, DIO |
| Package type | SOP32 |
The TM1723 uses a three‑wire serial interface consisting of CCLK, STB, and DIO pins.
The TM1723 can drive LCD panels up to 20 × 4 characters.
The device provides 64 PWM channels for back‑light control.
The TM1723 is supplied in an SOP32 surface‑mount package.