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CY2277A Datasheet K6 Clock Synthesizer/driver

Manufacturer: Cypress (now Infineon)

CY2277A Overview

The CY2277A is a Clock Synthesizer/Driver for Pentium, Pentium II, 6X86, and K6 portable PCs designed with the Intel® 82430TX or similar chipsets. There are three available options as shown in the selector guide The CY2277A outputs four CPU clocks at 2.5V or 3.3V with up to nine selectable frequencies. There are up to eight 3.3V SDRAM clocks and seven PCI clocks, running at one half the CPU clock frequency.

CY2277A Key Features

  • Mixed 2.5V and 3.3V operation
  • plete clock solution to meet requirements of Pentium®, Pentium® II, 6x86, or K6 motherboards
  • Four CPU clocks at 2.5V or 3.3V
  • Up to eight 3.3V SDRAM clocks
  • Seven 3.3V synchronous PCI clocks, one free running
  • Two 3.3V USB/IO clocks at 48 or 24 MHz, selectable by serial interface
  • One 2.5V IOAPIC clock at 14.318 MHz
  • Two 3.3V Ref. clocks at 14.318 MHz
  • Factory-EPROM programmable CPU, PCI, and USB/IO clock frequencies for custom configuration
  • Factory-EPROM programmable output drive and slew rate for EMI customization

More Datasheets from Cypress (now Infineon)

Part Number Description
CY22701 1 PLL In-System Programmable Clock Generator
CY2273A K6 Clock Synthesizer/Driver
CY22050 One-PLL General Purpose Flash Programmable Clock Generator
CY2210 133-MHz Spread Spectrum Clock Synthesizer/Driver with AGP/ USB/ and DRCG Support
CY2213 High Frequency Programmable PECL Clock Generator
CY22150 One-PLL General-Purpose Flash-Programmable and I2C Programmable Clock Generator
CY22381 Three-PLL General Purpose Flash Programmable Clock Generator
CY223811 Three-PLL General Purpose Flash Programmable Clock Generator
CY22388 Factory Programmable Quad PLL Clock Generator
CY22389 Factory Programmable Quad PLL Clock Generator

CY2277A Distributor