FM3135

www.DataSheet.co.kr Preliminary FM3135 Integrated RTC/Alarm/F-RAM & Embedded Crystal Features High Integration Device Replaces Multiple Parts Serial Nonvolatile Memory Real-time Clock (RTC) with Alarm Clock Output (Programmable frequency) 64Kb Ferroelectric Nonvolatile RAM Internally Organized as 8Kx8 Unlimited Read/Write Endurance 45 year Data Retention NoDelay™ Writes Fast Two-wire Serial Interface Up to 1 MHz Maximum Bus Frequency Supports Legacy Timing for 100 kHz & 400 kHz RTC & F-RAM Controlled via 2-wire Interface Real-time Clock/Calendar Embedded 32.768 kHz Crystal Backup Current under 1 µA Seconds through Centuries in BCD format Tracks Leap Years through 2099 Software Calibration Supports Battery or Capacitor Backup Easy to Use Configurations Operates from 2.7 to 3.6V 20-pin “Green”/RoHS SOIC (-G) Low Operating Current Industrial Temperature -40°C to +85°C Underwriters Laboratory (UL) Recognized Description The FM3135 integrates a real-time clock (RTC) and F-RAM nonvolatile memory. The 32.768kHz crystal is embedded inside the package. The device operates from 2.7 to 3.6V. The FM3135 provides nonvolatile F-RAM which features fast write speed and unlimited endurance. This allows the memory to serve as extra RAM for the system microcontroller or conventional nonvolatile storage. This memory is truly nonvolatile rather than battery backed. The real-time clock (RTC) provides time and date information in BCD format. It can be pe...