252MI-45LF

Overview

The Renesas 252MI-45LF is a VersaClock II programmable clock synthesizer designed for low-cost, single-output applications. It generates output frequencies ranging from 314 kHz to 200 MHz using Phase-Locked Loop (PLL) techniques with an input crystal frequency of 5 to 27 MHz. The device supports configurable Spread Spectrum Modulation to reduce system electromagnetic interference (EMI). Operating at a supply voltage of 3.3 V, it features controllable output drive levels and includes a power-down function that tri-states outputs and disables the PLL via the PDTS pin. It utilizes One-Time Programmable (OTP) ROM for field programmability through four selectable configuration registers.

Feature Summary

• Single-output clock synthesizer generating frequencies up to 200 MHz
• Field programmable via OTP ROM with four selectable configuration registers
• Configurable Spread Spectrum Modulation for EMI reduction
• Power-down feature to minimize consumption by tri-stating outputs

Applications

• Replacing multiple crystals and oscillators in embedded systems
• Low-cost clock generation for digital circuits
• Applications requiring controlled EMI performance

Part Context

The 252MI-45LF belongs to the VersaClock II family, which provides field-programmable clock solutions. This specific part is identified as obsolete in public distributor records. It shares functional similarities with other VersaClock devices but is distinguished by its specific frequency range and OTP programming capabilities within the 8-pin SOIC package.

Replacement Considerations

Public records indicate this part is obsolete. Potential replacements include newer VersaClock series devices such as the 5P35021 or other Renesas clock synthesizers. Designers should verify electrical compatibility and pinout alignment when selecting alternative components.