M35B32-WMN6TG Hoja de datos - STMicroelectronics

Description
   The M35B32 is a 32-Kbit electrically erasable programmable memory (EEPROM) accessed through the SPI bus.
   The M35B32 is able to save and store up to 256 bytes within a very short time with the help of the Event sector, this feature being convenient in cases of an unexpected power loss or if an urgent data storage is required. The fast storage is performed with a very low energy budget as the Program time lasts less than 1 ms and as the supply voltage can be as low as 2.5 V associated with a low Programming current (the M35B32 is based on EEPROM cells, energy-saving technology when compared to the Flash technology).

FEATUREs
• SPI bus compatible serial interface
• 32 Kbit of EEPROM divided into two sectors:
   – Data sector
   – Event sector
• Large page size: 256 bytes
• Fast programming:
   – Event sector: 256 bytes programmed in
      less than 1 ms
   – Data sector: 256 bytes written in less than
      5 ms
• Low energy EEPROM in either Read, Write,
   Program or Erase modes
• 2.5 V to 5.5 V single supply voltage
• Operating temperature range:
• – 40°C to +85°C
• – 40°C to +125°C
• Operating frequency, fC = 20 MHz
• Electronic signature: 20 10 0Ch
• Data cycling:
   – Data sector: more than 1 Million write
      cycles
   – Event sector: more than 10 000 write
      cycles
• Data retention:
   – Data sector: more than 40 years’ data
      retention
   – Event sector: 1 year