| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
 | RTC-4701NB:B3ROHS | Epson | IC RTC CLK/CALENDAR SER 22-SON |
 | BQ3285ESTRG4 | Texas Instruments | Real Time Clock IC, 242B Memory, 5V Supply, SOIC Package |
 | STK17T88-RF25I | Cypress | Programmable Timer, Non-Volatile, 1 Timer(s), CMOS, PDSO48, 0.300 INCH, ROHS COMPLIANT, PLASTIC, SSOP-48 |
 | RTC-4574NB:B3ROHS | Epson | IC RTC CLK/CALENDAR SER 22-SON |
 | FTL7522L6X | Onsemi | Low ICCT Reset Timer with Fixed Delay and Reset Pulse, 5000-REEL |
No Image | DS12R885S-33+T&R | Maxim | Real Time Clock 114B 3.3V SOIC Surface Mount -40°C to 85°C |
No Image | DS1393U-33+ | Maxim | IC RTC CLK/CALENDAR SER 10-USOP |
 | BQ4802LYPWRG4 | Texas Instruments | Clock IC Real-Time 3.3V 2.7V 70°C TSSOP28 Surface Mount |
 | PT7C4337WE | Diodes | 8-Pin SOIC Lead-Frame SMT Clock/Calendar IC 1.8V-5.5V -40C-85C |
 | ISL12028IBZ | Intersil | Real Time Clock/Calendar with I<sup>2</sup>C Bus™ and EEPROM; SOIC14, TSSOP14; Temp Range: -40° to 85°C |
 | DS32B35-33# | Maxim | 32.768kHz Real-Time Clock, 2KB FRAM, 400kHz I2C, SOIC-8 |
 | BQ4802YDWG4 | Texas Instruments | 5V Real-Time Clock IC, 20-Pin SOIC, Surface Mount, 0°C to 70°C |
 | PCF2129AT/1 | NXP | 20-Pin SO Lead-Frame SMT RTC IC, 1.8V-4.2V, -40°C-85°C |
 | ISL1208IRT8Z-TK | Intersil | Real Time Clock Serial 2Byte 8-Pin TDFN EP T/R |
 | CY14B256K-SP35XIT | Cypress | 256Kb Non-Volatile NVSRAM, 8b Parallel Interface, SSOP-48 |
 | ISL12029IB30AZ | Intersil | 3.3V Real-Time Clock with I2C/SPI Interface, SOIC-8 |
 | ISL1218IBZ | Intersil | IC RTC CLK/CALENDAR I2C 8-SOIC |
 | DS1743W-120+ | Maxim | 8KB Parallel RTC IC, 3.3V, 3.63V, 0°C to 70°C, Through Hole DIP |
No Image | CDP68HC68T1MZ | Intersil | Industrial Clock IC, Real Time, 32B Memory, 6V Supply, SOIC W Package |
No Image | DS1685S-3+T&R | Maxim | IC RTC CLK/CALENDAR PAR 24-SOIC |