The MB90091A is a multi-sync, on-screen display controller that supports NTSC, PAL, double-scan NTSC, double-scan PAL, 1250HDTV, and 1125HDTV as well as VGA and XGA personal computer monitor display systems. The MB90091A contains display memory (VRAM) and character font ROM, allowing characters to be displayed with few external devices. The device also contains command table ROM storing display command data, minimizing the load on the microcomputer. The on-screen display configuration is up to 24 characters × 12 lines, with each character consisting of 24 × 32 dots. The font ROM integrates 512 different character patterns. The character signal output is an RGB1 digital output. The display color of each character can be specified from among 16 colors. A color/monochrome select signal output is also provided for display either in 16 different colors or in 16-level gray scale. The character display functions include character background display, shaded background display, and sprite character display functions, contributing to providing colorful display screens.
The MB90091A is a multisync on-screen display controller designed to support various TV systems, including NTSC, PAL, double-scan NTSC, double-scan PAL, 1250HDTV, 1150HDTV, and personal computer monitor systems like VGA and XGA. The device integrates display memory (VRAM) and character font ROM, allowing characters to be displayed with minimal external components. It features a command table ROM to minimize the load on the microcomputer and supports configurations up to 24 characters by 12 lines.
| Screen display capacity | Up to 24 characters x 12 lines |
|---|---|
| Font size | 24 x 32 dots |
| Font types | 512 different characters |
| Display modes | Trimmed display, Character background, Shaded background |
| Power supply voltage | 4.75 to 5.25 V |
| Operating temperature | 0 to +70 °C |
| Package types | SH-DIP-64, QFP-64 |
The maximum screen display capacity is up to 24 characters by 12 lines.
The recommended power supply voltage range is 4.75 V to 5.25 V.