| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
 | M41T00SC64MY6F | Stmicroelectronics | 64Kb I2C/SPI Real-Time Clock, 8KX8, 5V, SOIC-18 |
 | DS1307ZN+T&R/C02 | Maxim | 5V Real-Time Clock IC, 56B Memory, SOIC Package, -40°C to 85°C |
 | M41T56M6E | Stmicroelectronics | Real Time Clock 56B, 5V, SOIC-8, -40°C to 85°C |
 | PCF8564AU/10AB/1 | NXP | Real Time Clock Serial Clock/Calendar/Alarm/Timer/Interrupt Die |
 | DS1672U-2 | Maxim | IC RTC BINARY CNT I2C 8-USOP |
 | PCF8563TD-T | NXP | Real Time Clock Serial 8-Pin SO T/R |
 | PCF8563TS-T | NXP | Real Time Clock Serial 8-Pin TSSOP T/R |
 | PCF8564AU/5BB/1 | NXP | Real Time Clock Serial Clock/Calendar/Alarm/Timer/Interrupt Die |
 | PCF8564AU/10AB/1,0 | NXP | Real Time Clock Serial Clock/Calendar/Alarm/Timer/Interrupt Die Wafer |
 | DS12885QN+ | Maxim | MAXIM INTEGRATED PRODUCTS DS12885QN+. RTC, BINARY OR BCD TIME, 12885, PLCC28 |
 | BQ4845S-A4N | Texas Instruments | RTC IC W NVSRAM Control, Watchdog Timer, uP Reset, Interrupts and Battery Low Warning 28-SOIC -40 to 85 |
 | BQ3285ESSTR | Texas Instruments | RTC IC with 242x8 NVSRAM Alarm Wake-up 24-SSOP 0 to 70 |
 | BQ3285ESSTRG4 | Texas Instruments | 5V Real Time Clock IC, 242B Memory, 0°C to 70°C, SSOP24 Package |
 | PCF85263AT/AJ | NXP | I2C RTC IC, Serial Clock/Calendar/Alarm/Timer, SOIC, 85°C |
 | DS1306E+ | Maxim | Real Time Clock IC, SPI, Serial, 96B Memory, 0-70°C, TSSOP |
 | M41T81M6E | Stmicroelectronics | Serial real-time clock (RTC) with alarm |
 | HEF4541BT-Q100Y | Nexperia | Programmable Timer IC, 14-Pin SOIC |
No Image | S-35390A-J8T1G | Seiko | Serial RTC IC, Clock/Calendar/Alarm, 8-Pin SOP, 5.5V |
 | PT7C4563UEX | Diodes | IC RTC CLK/CALENDAR I2C 8-MSOP |
 | M41T80M6E | Stmicroelectronics | Serial real-time clock (RTC) with alarm |