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82C283 Datasheet

Part Number 82C283
Manufacturers Opti
Logo Opti
Description 386SX System Controller
Datasheet 82C283 Datasheet82C283 Datasheet (PDF)

www.DataSheet4U.com OPTi ® 82C283 386SX System Controller 1.0 Features 2.0 Overview • Flexible DRAM banks configuration - Supports 256K, 1M and 4M DRAM • Block interleave mode operations - Block interleaving at a block size of 512 bytes • BIOS shadow RAM - Shadow RAM for system, video and adapter BIOS • Memory remapping • Flexible multiplexed DRAM address • Programmable AT bus clock • Turbo switch • 160-pin PQFP (Plastic Quad Flat Pack) The 82C283 is a highly integrated, AT system logic.

  82C283   82C283






Part Number 82C288
Manufacturers AMD
Logo AMD
Description Bus Controller
Datasheet 82C283 Datasheet82C288 Datasheet (PDF)

www.DataSheet4U.com www.DataSheet4U.com www.DataSheet4U.com www.DataSheet4U.com www.DataSheet4U.com www.DataSheet4U.com www.DataSheet4U.com www.DataSheet4U.com www.DataSheet4U.com www.DataSheet4U.com www.DataSheet4U.com www.DataSheet4U.com www.DataSheet4U.com www.DataSheet4U.com www.DataSheet4U.com www.DataSheet4U.com www.DataSheet4U.com www.DataSheet4U.com .

  82C283   82C283







Part Number 82C288
Manufacturers Intel Corporation
Logo Intel Corporation
Description BUS CONTROLLER
Datasheet 82C283 Datasheet82C288 Datasheet (PDF)

www.DataSheet4U.com M82C288 BUS CONTROLLER FOR M80286 PROCESSORS (M82C288-10 M82C288-8 M82C288-6) Military Y Provides Commands and Controls for Local and System Bus Wide Flexibility in System Configurations Implemented in High Speed CHMOS III Technology Fully Compatible with the HMOS M82288 Y Y Y Fully Static Device Single a 5V Supply Available in 20 Pin Cerdip Package (See Packaging Spec Order 231369) Y Y Y The Intel M82C288 Bus Controller is a 20-pin CHMOS III component for use in M80C.

  82C283   82C283







Part Number 82C284
Manufacturers Intersil Corporation
Logo Intersil Corporation
Description Clock Generator and Ready Interface for 80C286 Processors
Datasheet 82C283 Datasheet82C284 Datasheet (PDF)

82C284 March 1997 Clock Generator and Ready Interface for 80C286 Processors Description The Intersil 82C284 is a clock generator/driver which provides clock signals for 80C286 processors and support components. It also contains logic to supply READY to the CPU from either asynchronous or synchronous sources and synchronous RESET from an asynchronous input with hysteresis. Features • Generates System Clock for 80C286 Processors • Generates System Reset Output from Schmitt Trigger Input - Improv.

  82C283   82C283







Part Number 82C28
Manufacturers Unisonic Technologies
Logo Unisonic Technologies
Description VOLTAGE DETECTORS
Datasheet 82C283 Datasheet82C28 Datasheet (PDF)

UNISONIC TECHNOLOGIES CO., LTD 82CXX VOLTAGE DETECTORS 3 CMOS IC 4 5 2 1 „ DESCRIPTION The UTC 82CXX series are good performance 3-terminals voltage detectors and manufactured by CMOS technologies with highly accurate, low power consumption. The detection voltage is extremely accurate with minimal temperature drift. 1 2 3 SOT-23 SOT-25 „ FEATURES 1 *High-accuracy detection voltage : ±2% *Detect voltage range : 0.9V to 6.2V in 0.1V increments *Detect voltage temperature characteristic.

  82C283   82C283







386SX System Controller

www.DataSheet4U.com OPTi ® 82C283 386SX System Controller 1.0 Features 2.0 Overview • Flexible DRAM banks configuration - Supports 256K, 1M and 4M DRAM • Block interleave mode operations - Block interleaving at a block size of 512 bytes • BIOS shadow RAM - Shadow RAM for system, video and adapter BIOS • Memory remapping • Flexible multiplexed DRAM address • Programmable AT bus clock • Turbo switch • 160-pin PQFP (Plastic Quad Flat Pack) The 82C283 is a highly integrated, AT system logic VLSI chip for high-end 386SX/AT systems. It integrates a local memory controller (local memory is on-board memory), AT bus controller, and data bus controller into one chip. It is designed for systems running at 16MHz, 20MHz, 25MHz, and 33MHz*. A high performance, compact 386SX/AT system is readily implemented with the 82C283 and a standard peripheral controller like OPTi’s 82C206 or the 82C100 (with Dallas Semiconductor (DS1287). *Rev. B only Figure 2-1 System Block Diagram A Bus D Bus DRAM RAS, CAS, MA SA Bus SD Bus A[23:0] 386SX D[15:0] OPTi 82C283 SD[15:0] SA[19:17] SD 245 XD[7:0] D[15:0] 387SX A[16:1] XA0 245 (x2) SA[16:0] SA ROM GA20 A[23:17] 245 LA[23:17] A[9:1] A[23:16] OPTi 82C206 XD[7:0] 8042 September 1994 OPTi Inc. · 2525 Walsh Avenue · Santa Clara, CA 95051 · (408) 980-8178 www.DataSheet4U.com 82C283 3.0 Signal Definitions Pin Diagram Figure 3-1 120 119 118 117 116 115 114 113 112 111 110 109 108 107 106 105 104 103 102 101 100 99 98 97 96 95 94 93 92 91 9.


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