M41ST87W Datasheet - STMicroelectronics

5.0, 3.3, or 3.0V, 1280 bit (160 x8) Secure Serial RTC and NVRAM Supervisor with Tamper Detection

3.0/3.3 V I2C serial RTC with 44 bytes of NVRAM and supervisory functions

3.0/3.3V I�C combination serial RTC, NVRAM supervisor and microprocessor supervisor

5.0 or 3.0V, 512 bit (64 x 8) Serial RTC and NVRAM Supervisor

Serial real-time clock (RTC) with 56 bytes of NVRAM

Serial real-time clock with 44 bytes NVRAM and reset ( Rev : 2009 )

Serial real-time clock with 44 bytes NVRAM and reset ( Rev : 2007 )

Serial real-time clock with 44 bytes NVRAM and reset ( Rev : 2014 )

3 V NVRAM supervisor for LPSRAM ( Rev : 2013 )

5 V or 3 V NVRAM supervisor for LPSRAM ( Rev : 2010 )