| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
 | ISL12029IBZ | Intersil | Real Time Clock 512B SOIC Surface Mount 2.7V 5.5V -40°C 85°C |
 | ISL12025IVZ | Intersil | Real-Time Clock/Calendar with I<sup>2</sup>C Bus™ and EEPROM; SOIC8, TSSOP8; Temp Range: -40° to 85°C |
 | ISL12027IBZ | Intersil | Real Time Clock/Calendar with EEPROM; SOIC8, TSSOP8; Temp Range: -40° to 85°C |
 | M41T83RMY6E | Stmicroelectronics | Serial I²C bus real-time clock (RTC) with battery switchover |
 | BQ4802LYPWG4 | Texas Instruments | IC RTC CLK/CALENDAR PAR 28-TSSOP |
 | M41T0M6E | Stmicroelectronics | Serial real-time clock (RTC) |
 | PCF8593T | NXP | 0 TIMER(S), REAL TIME CLOCK, PDSO8, 3.90 MM, PLASTIC, MS-012AA, SOT-96-1, SO-8 |
No Image | DS1678S+T&R | Maxim | IC RTC EVENT REC I2C 8-SOIC |
 | STK17TA8-RF25I | Cypress | Programmable Timer, Non-Volatile, 1 Timer(s), CMOS, PDSO48, 0.300 INCH, ROHS COMPLIANT, PLASTIC, SSOP-48 |
 | M48T37V-10MH1E | Stmicroelectronics | RTC IC, 256Kb SRAM, 100ns, Parallel, SOIC, 3.3V |
 | M48T37V-10MH6F | Stmicroelectronics | 100ns Access Time Clock IC, SOIC Package, 3.3V, -40°C to 85°C |
 | BQ3285LDSS | Texas Instruments | Real Time Clock IC, 242B Memory, 3V Operating Supply, SSOP Package |
 | PCF2127AT/1 | NXP | Real Time Clock Serial 512byte Clock/Calendar 20-Pin SO |
 | M41T56MH6E | Stmicroelectronics | Serial real-time clock (RTC) with 56 bytes NVRAM |
 | ISL12028IV27Z-T | Intersil | Real Time Clock, 512B Memory, 3.3V, I2C/Series, TSSOP-14 |
 | RX-8025NB:AA3PURESN | Epson | IC RTC CLK/CALENDAR I2C 22-SON |
 | NLV14541BDR2G | Onsemi | Programmable Timer Oscillator, SOIC-14 NB, 2500-REEL |
 | M48T02-200PC1 | Stmicroelectronics | 5.0 V, 16 Kbit (2 Kb x 8) TIMEKEEPER® SRAM |
 | M41T83ZMY6E | Stmicroelectronics | SOP-18 Real-Time Clock IC 7B 2.38V 5.5V -40°C 85°C |
No Image | DS17487-3+ | Maxim | IC RTC CLK/CALENDAR PAR 24-EDIP |