RTC (clock-calendar) circuits
Dallas
DS1307
Dallas DS1307 Real-Time Clock (RTC) IC, I2C-Bus, DIP-8
Maxim - Dallas
DS1307Z
Maxim Dallas DS1307Z+T&R Serial Real-Time Clock (RTC) IC, SO-8, SMD
Maxim
DS1307ZN-T-R
Maxim DS1307ZN-T-R RTC IC, I2C Bus, SMD SO8, 8-Pin, -40°C to +85°C
Dallas
DS1339U-33-T-R
Dallas DS1339U-33-T-R Real-Time Clock (RTC) IC, I2C-Bus, µSOP8, SMD
Dallas
DS1672S-33
Dallas DS1672S-33 Real-Time Clock (RTC) IC, I2C-Bus, SO8, SMD
Maxim - Dallas
DS12887
Maxim Dallas DS12887 Real-Time Clock (RTC) IC, Parallel, DIP-24, Battery Backup
Dallas
DS17287-5
Dallas DS17287-5+ Real-Time Clock RTC IC DIP24
Ricoh
R2025S-E2-FE
Ricoh R2025S-E2-FE High Precision I2C Real-Time Clock Module
Ricoh
R2051S01-E2-F
Ricoh R2051S01-E2-F Real-Time Clock (RTC) with I2C Interface and Selector Function
Ricoh
RS5C348A
Ricoh RS5C348A Real-Time Clock RTC IC SMD SSOP10
Ricoh
RS5C372A-E2-F
Ricoh RS5C372A-E2-F I2C Serial Interface RTC Integrated Circuit SSOP8 SMD
