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CY2037: High Accuracy EPROM Programmable PLL Die for Crystal Oscillators | Cypress Semiconductor

CY2037: High Accuracy EPROM Programmable PLL Die for Crystal Oscillators

Last Updated: 
Jan 29, 2018

High Accuracy EPROM Programmable PLL Die for Crystal Oscillators


  • Erasable programmable read only memory (EPROM) - programmable die for in-package programming of crystal oscillators
  • High resolution Phase locked loop (PLL) with 12-bit multiplier and 10-bit divider
  • EPROM programmable capacitor tuning array with optional shadow register
  • Twice programmable die
  • Simple 2-wire programming interface
  • On-chip oscillator runs from 10 MHz to 30 MHz fundamental tuned crystal
  • EPROM-selectable Transistor transistor logic (TTL) or Complementary metal oxide semiconductor (CMOS) duty cycle levels
  • Operating frequency:
    • 1 MHz to 133 MHz at 5 V
  • For more, see pdf

Functional Description

CY2037 is an EPROM-programmable, high accuracy, PLL-based die designed for the crystal oscillator market. The die attaches directly to a low cost 10 to 30 MHz crystal and can be packaged into a 4-pin through-hole or surface mount packages. The oscillator devices may be stocked as blank parts and custom frequencies programmed in-package at the last stage before shipping. This enables fast-turn manufacture of custom and standard crystal oscillators without the need for dedicated, expensive crystals.

Dear valued customer,

Thank you for choosing our products. They come with all the know-how and passion that our engineers have put into it. As you probably already know, Cypress is now Infineon. This is a major step for our company, but also for the good of you. 

Reliability and business continuity are of utmost importance for us. Hence, we remain fully committed to honoring existing customer and distributor relationships. This includes offering the legacy Cypress product portfolio. We thank you very much for your trusting support.

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