HD61830/HD61830B is a dot matrix liquid crystal graphic display controller LSI from Toshiba, which stores the display data sent from an 8-bit microcontroller in the external RAM to generate dot matrix liquid crystal driving signals. It has a graphic mode in which 1-bit data in the external RAM corresponds to the on/off state of 1 dot on liquid crystal display and a character mode in which characters are displayed by storing character codes in the external RAM and developing them into the dot patterns with the internal character generator ROM. Both modes can be provided for various applications. Since it is produced by CMOS process, it can be used together with a CMOS microcontroller to complete a liquid crystal display device with lower power dissipation.
The HD61830/HD61830B is a dot matrix liquid crystal graphic display controller LSI produced by the CMOS process. It stores display data sent from an 8-bit microcontroller in external RAM to generate driving signals, supporting both graphic and character modes.
| Display control capacity (Graphic mode) | 512k dots |
|---|---|
| Display control capacity (Character mode) | 4096 characters |
| Internal character generator ROM size | 7360 bits |
| Operating frequency (HD61830) | 1.1 MHz |
| Operating frequency (HD61830B) | 2.4 MHz |
| Power supply voltage | +5 V +10% |
The internal ROM supports 5 x 7 dot characters (160 types) and 5 x 11 dot characters (32 types).
The controller supports a graphic mode with a capacity of 512k dots.
The internal ROM stores a total of 192 characters.
The HD61830B operates at a frequency of 2.4 MHz.