82C435

The features of 82C435 can be summarized as (1)100% hardware and software compatible to IBM enhanced graphics adapter card; (2)backward compatible to IBM color graphics, IBM monochrome and hercules adapters; (3)reduces the chip-count for an EGA implementatlon to 13 standard components, including 356 Kbytes ot display memory; (4)hardware support for context swltchlng in windowing and multi-tasking environments; (5)smart auto-emulation adjusts automatically to dlsplay mode required by appllcation software; (6)lmproved CPU access to display memory, allowing up to two times taster performance over IBM EGA without software changes; (7)supports 640 × 480 resolution. 38 MHz options supports 800 × 600 resolution; (8)BIOS and sottware drivers tor 640 × 480 resolution and 800 × 600 resolution available.

The 82C435 Graphics Controller and 82A436 Bus Interface offer a complete, highly integrated solution for implementing an IBM Enhanced Graphics Adapter compatible controller, with backward compatibility to CGA, IBM Monochrome, and Hercules modes. A complete EGA, with backward compatibility can be implemented using a total of 13 off-the-shelf components, including 256k bytes of display memory. The 82C435 single-chip graphics controller integrates the functions of the four-chip CS8240 CHlPSet (82C431 graphics controller, 82c432a sequencer, 82c433 attributes controller, and 82C434A CRT Controller) with additional support logic and registers for backward compatibility to CGA, hercules and IBM monochrome modes. The 83C435 is packaged in an 84-pin PLCC.

The absolute maximum ratings of 82C435 are (1)supply voltage VDD: 7.0V; (2)input voltage VI: -0.5 to VDD +0.5V; (3)output voltage VO: -0.5 toVDD + 0.5V; (4)operating temperature TOP: -25 to 85°C; (5)storage temperature TSTG: -40 to 125°C.