OPTi 82C495XLC
82C495XLC is a low-cost two-chip solution offering optimal performance for low to mid range 386/486-based AT systems. The OPTi 82C495XLC is designed for 486 systems running at 20, 25, 33, 40 and 50MHz or 386 systems running at 20, 25, 33 and 40MHz.| Part No. | 82C495XLC |
|---|---|
| Datasheet | 82C495XLC Download |
| Manufacturer | OPTi |
| Description | PC/AT Chip Set |
| Buy | Stock & Price |
FEATURES
● Low cost, low power, CMOS Technology● Supports 386DX, 486 DX/DX2/SX CPUs as well as Intel P24T and Cyrix Cx486S/S2 and Cx486DX/DX2 CPUs
● One 160-pin CMOS Plastic Flat Package (PFP), one 84 pin PLCC (or one 100-pin PFP)
● Internal buffers and termination to reduce external parts count
● Copy-Back Direct-Mapped Cache: 32/64/128/256KB for 386, and 64/128/256/512KB for 486
● Up to 10% performance enhancement from writethrough cache scheme
● Supports 2-1-1-1 or 3-2-2-2 cache cycles
● On-chip comparator determines cache hit/miss
● Up to 64MB of local high-speed, page mode DRAM memory space
● Burst line fill during cache read-miss
● Control of one non-cacheable region
● Shadow RAM support for system, video and adapter card BIOS
● Optional caching of shadowed video BIOS
● Hidden refresh support to enhance system performance
● Turbo/slow speed selection (386 mode only)
● AT bus clock selectable from CLKI (/6, /5 /4, /3)
● CAS-before-RAS refresh reduces power consumption
● Optional...
