| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
 | DS1306E/T&R | Maxim | IC RTC CLK/CALENDAR SPI 20-TSSOP |
No Image | RX-8025SA:AC0 | Seiko | IC RTC CLK/CALENDAR I2C 14-SOP |
 | DS14285SN+ | Maxim | IC RTC CLK/CALENDAR PAR 24-SOIC |
 | DS14285S/T&R | Maxim | IC RTC CLK/CALENDAR PAR 24-SOIC |
 | STK17T88-RF25 | Cypress | Programmable Timer, Non-Volatile, 1 Timer(s), CMOS, PDSO48, 0.300 INCH, ROHS COMPLIANT, PLASTIC, SSOP-48 |
 | DS1744-70IND | Maxim | Real Time Clock, Non-Volatile, 0 Timer(s), CMOS, EDIP MODULE-28 |
 | DS1673S-3 | Maxim | Real Time Clock, Volatile, 0 Timer(s), MOS, PDSO20, 0.300 INCH, SOIC-20 |
 | DS1743P-70 | Maxim | Real Time Clock, Non-Volatile, 0 Timer(s), CMOS, POWERCAP MODULE-34 |
 | DS1554W-120IND+ | Maxim | 32KB Parallel RTC IC, 3.3V, 85°C, Through Hole, RoHS Compliant |
 | STK17TA8-RF25ITR | Cypress | Programmable Timer, Non-Volatile, 1 Timer(s), CMOS, PDSO48, 0.300 INCH, ROHS COMPLIANT, PLASTIC, SSOP-48 |
 | DS1744P-70IND | Maxim | 32KB Parallel RTC IC, 4.5V-5.5V, -40°C-85°C, Surface Mount |
 | STK17TA8-RF25TR | Cypress | 1Mb Non-Volatile NVSRAM, 8b Parallel Interface, 0-70°C, SSOP-48 |
 | DS17285-5 | Maxim | Real Time Clock IC, 2KB, 0°C to 70°C, Parallel Interface, PDIP Package |
 | ISL1218IBZ-T | Renesas | Low Power RTC with Battery Backed SRAM |
No Image | DS1318E+T&R | Maxim | Real Time Clock PARALLEL-INTERFACE ELAPSED TIME COUNTER |
 | ISL1218IBZ | Renesas | Low Power RTC with Battery Backed SRAM |
 | DS1556W-120+ | Maxim | 128KB Real Time Clock IC, 3.3V, 0°C to 70°C, Through Hole |
 | DS1689SN/T&R | Maxim | Real Time Clock IC 114B 2.7V 5.5V SOIC Surface Mount -40°C to 85°C |
No Image | RS5C372A-E2-F | Ricoh | 8-Pin Industrial Real Time Clock Timer IC, 2V-6V, 0.4MHz, R-PDSO-G8 |
 | ISL12024IRTCZ-T | Renesas | Real-Time Clock/Calendar with Embedded Unique ID |