| Image | Part Number | Manufacturer | Description |
|---|---|---|---|
 | DS3232S#T&R | Maxim | DS3232S Real-Time Clock IC, I2C/Series, 236B Memory, SOIC Package |
 | PT7C4307WEX | Diodes | Real Time Clock, Non-Volatile, 1 Timer(s), CMOS, PDSO8, SOIC-8 |
 | M41T01M6F | Stmicroelectronics | Serial real-time clock (RTC) with built-in battery switchover circuit |
 | DS1374U-33+T&R | Maxim | RTC IC I2C 3.3V 5.5V UMAX Tape & Reel |
 | MCP79520T-I/MS | Microchip | 64-Bit Real-Time Clock IC, 1.8V to 3.6V, MSOP-10 Package |
No Image | S-35390A-I8T1U | Ablic | RTC IC, CMOS, 8-Pin, Industrial Temp, 1.3-5.5V |
No Image | S-35390A-T8T1G | Ablic | RTC IC, CMOS, 8-Pin, Industrial Temp, 1.3-5.5V |
 | BQ4845YS-A4N | Texas Instruments | RTC IC W NVSRAM Control, Watchdog Timer, uP Reset, Interrupts and Battery Low Warning 28-SOIC -40 to 85 |
 | PCF8563T/5 | NXP | IC 1 TIMER(S), REAL TIME CLOCK, PDSO8, 3.90 MM, PLASTIC, MO-012, SOT96-1, SO-8, Timer or RTC |
No Image | MCP79402-I/SN | Microchip | Real Time Clock Serial 64byte Clock/Calendar/Alarm/Battery Backup Automotive 8-Pin SOIC N Tube |
 | DS1315E-33 | Maxim | Clock IC Real Time 3.3V Surface Mount TSSOP |
 | MCP7940MT-I/SN | Microchip | Real Time Clock Serial 64byte Clock/Calendar/Alarm Automotive 8-Pin SOIC N T/R |
 | CS82C54-10Z96 | Intersil | Programmable Timer IC, 5V, PLCC, 100ns Delay |
 | M41T93RMY6E | Stmicroelectronics | Industrial Real-Time Clock IC, SPI Interface, 7B Memory, -40°C to 85°C |
 | DS1216B | Maxim | Real Time Clock IC, 2000B RAM, 5V, 5mA, DIP Package |
 | MCP79511T-I/MN | Microchip | 64-Bit Real-Time Clock IC, 1.8V to 3.6V, Surface Mount, -40°C to 85°C |
 | PT7C4337WEX | Diodes | I2C/Serial 2-Wire Clock IC, SOIC, -40°C to 85°C, RoHS Compliant |
 | PCF2123BS/1 | NXP | Real Time Clock, 1.8V to 5.5V, QFN Package, -40°C to 85°C |
 | BQ3287MT-SB2 | Texas Instruments | Clock IC Real-Time Dual 114B 5V 4.5V DIP24 Through Hole 0°C 70°C |
 | DS1315E-5 | Maxim | 5V Clock IC, TSSOP, Surface Mount, 0°C to 70°C |