| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
 | DS1646P-120+ | Maxim | IC RTC CLK/CALENDAR PAR 34-PCM |
 | DS1685E-5+ | Maxim | IC RTC CLK/CALENDAR PAR 24-TSSOP |
 | ISL1209IU10Z-TK | Renesas | Low Power RTC with Battery Backed SRAM and Event Detection |
No Image | PT7C4337UEX | Diodes | Real Time Clock, Volatile, 1 Timer(s), CMOS, PDSO8, GREEN, MO-187E/BA, MSOP-8 |
 | DS1243Y-120 | Maxim | Real Time Clock, Non-Volatile, 0 Timer(s), CMOS, PDIP28, 0.720 INCH, ENCAPSULATED, DIP-28 |
 | ISL1219IUZ | Renesas | Low Power RTC with Battery Backed SRAM and Event Detection |
 | ISL12022MIBZR5421 | Renesas | Low Power RTC Module with Battery Backed SRAM, Integrated Temp Comp and Auto Daylight Saving |
 | CDP68HC68T1EZ | Renesas | CMOS Serial Real-Time Clock With RAM and Power Sense/Control |
 | ISL12058IRTZ | Renesas | Low Cost, Low Power I2C-Bus™ Real Time Clock/Calendar Low Power and Low Cost RTC with Alarm Function |
 | ISL12058IUZ-T | Renesas | Low Cost, Low Power I2C-Bus™ Real Time Clock/Calendar Low Power and Low Cost RTC with Alarm Function |
 | ISL12082IUZ | Intersil | IC RTC CLK/CALENDAR I2C 10-MSOP |
 | DS1501YS | Maxim | Real Time Clock IC 256B 0°C-70°C 4.5V-5.5V SOIC-28 |
 | M41T56MH6F | Stmicroelectronics | 56B Real-Time Clock IC, I2C/Series, 4.5-5.5V, SO Package |
 | CY14B256K-SP35XCT | Cypress | 256Kb NVSRAM IC, 8b Parallel Interface, SSOP-48, 0-70°C |
 | DS1554P-70IND+ | Maxim | 32KB Parallel RTC IC, 5V, 5.5V, -40°C to 85°C, Lead Free |
 | ISL12008IB8Z-T | Renesas | I2C Real Time Clock with Battery Backup Low Power RTC with Battery ReSeal™ Function |
 | CDP68HC68T1MZ96 | Renesas | CMOS Serial Real-Time Clock With RAM and Power Sense/Control |
No Image | PCF2129T/2 | NXP | 16-Pin Industrial Timer IC, 1.8-4.2V, 0.032MHz, 16 Terminal DUAL |
 | DS12R887-5 | Maxim | 5V Real Time Clock, 114B Memory, BGA Package, -40°C to 85°C |
 | DS1501WSN+ | Maxim | 256B Real Time Clock IC, 3.3V, SOIC, -40°C to 85°C, RoHS Compliant |