Renesas Electronics Corporation

VersaClock III Timing Devices

Greater flexibility, improved performance with VersaClock III from Renesas

VersaClock III Timing DevicesRenesas' VersaClock III devices are programmable clock generators specifically designed for use in high-performance consumer, telecommunications, networking, and data communication applications. They are a more versatile alternative to using multiple crystals and oscillators. Additionally, these programmable timing solutions are critical in reducing board space and maintaining power efficiency where volumes may not allow full custom solutions. Multiple systems, with widely varying requirements, can consolidate to fewer of these programmable devices, improving inventory management.

For greatest possible design flexibility, the Renesas VersaClock III family features four internal PLLs, each individually programmable and able to generate four unique frequencies. In addition, EMI-reducing spread spectrum technology is available on two of the PLLs, ensuring the highest possible signal integrity. For even greater integration, VCXO versions are available to ensure Renesas customers receive compatibility with industry timing standards.

These timing devices also feature an I2C interface, providing programmability during normal operation. The internal EEPROM allows the user to save and restore configurations of the device without having to reprogram it on power up, saving valuable design time and maximizing ROI. Moreover, to give designers even greater options, the new VersaClock devices can generate frequencies from 5kHz to 500MHz and are compatible with many different output types — from single-ended LVCMOS to differential LVDS, LVPECL, and HCSL - to support all timing systems in a single device.

The VersaClock III devices feature lower jitter and clock redundancy with a gltich-free automatic or manual switchover function that allows the use of a secondary clock source to be selected if a clock error occurs during normal operation of the primary source, helping improve timing and device performance.

Features
  • Fast (400 kHz) mode I2C serial interface for device configuration
  • Reference crystal input with programmable linear load capacitance
    • Crystal frequency range: 8 to 50MHz
  • Redundant clock input with glitch-less auto switchover
  • Output frequency range: 4.9kHz to 500MHz
  • Input clock frequency range: 1MHz to 200MHz
  • Programmable loop bandwidth settings
  • -40 to +85°C industrial temperature operation
  • Two PLLs support spread spectrum generation
  • Each PLL has a 7-bit reference divider and a 12-bit feedback divider
  • I/O standards:
    • Outputs: 1.8V/2.5V/3.3V LVTTL/LVCMOS (device dependent)
    • Outputs: LVPECL, LVDS, and HCSL
    • Inputs: LVTTL/LVCMOS
  • Four internal PLLs
  • Internal non-volatile EEPROM
  • Optional integrated VCXO
  • 8-bit output divider clocks

VersaClock III Timing Devices

图片制造商零件编号描述可供货数量价格
IC CLOCK GENERATOR 32VFQFPN5V49EE901NLGIIC CLOCK GENERATOR 32VFQFPN473 - 立即发货$86.20查看详情
IC CLOCK GENERATOR 32VFQFPN5V49EE904NLGIIC CLOCK GENERATOR 32VFQFPN490 - 立即发货$122.40查看详情
IC CLOCK GENERATOR 28VFQFPN5V49EE702NDGIIC CLOCK GENERATOR 28VFQFPN0 - 立即发货See Page for Pricing查看详情
IC CLOCK GENERATOR 24QFN5V49EE502NLGIIC CLOCK GENERATOR 24QFN1926 - 立即发货$151.87查看详情
IC CLOCK GENERATOR 24QFN5V49EE504NLGIIC CLOCK GENERATOR 24QFN0 - 立即发货See Page for Pricing查看详情
发布日期： 2010-10-04

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VersaClock™ III Programmable Clocks VersaClock devices provide fast and easy solutions to meet customers' timing needs and are readily available in the market for mass production of all volumes.