Real Time Clocks
Use the filters and product table below to compare Real Time Clocks components by manufacturer, availability, pricing reference and technical specifications. Review datasheets and key parameters to narrow the selection for your application.
If you already have a target part number, package, rating or quantity, send the requirement to Winsun (HK) Electronics for availability checks, BOM sourcing, shortage support and quotation assistance.
| Photo | Mfr. Part # | Availability | Price | Quantity | Datasheet | Series | Package/Case | Packaging | Product Status | Programmable | Type | Features | Memory Size | Time Format | Date Format | Interface | Voltage - Supply | Voltage - Supply, Battery | Current - Timekeeping (Max) | Operating Temperature | Mounting Type | Grade | Qualification | Supplier Device Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
PCA21125T/Q900/1,1IC RTC CLK/CALENDAR SPI 14TSSOP |
297 | - |
|
Datasheet | - | 14-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI | 1.6V ~ 5.5V | - | 30.3µA @ 2V ~ 5V | -40°C ~ 125°C | Surface Mount | - | - | 14-TSSOP |
|
PCF2131TFYIC RTC CLK/CALENDAR I2C 16HLSON |
2,811 | - |
|
Datasheet | - | 16-LFDFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | I2C, SPI | 1.2V ~ 5.5V | 1.2V ~ 5.5V | 770nA ~ 2.135µA @ 1.2V ~ 5.5V | -40°C ~ 85°C (TA) | Surface Mount, Wettable Flank | - | - | 16-HLSON (4.5x3.5) |
|
PCA2129T/Q900/2,51IC RTC CLOCK/CALENDAR I2C 16SO |
1,656 | - |
|
Datasheet | - | 16-SOIC (0.295", 7.50mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, TCXO/Crystal, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.8V ~ 4.2V | 1.8V ~ 4.2V | 1.5µA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 16-SO |
|
PCF85063BTL/1,118IC RTC CLK/CALENDAR SPI 10DFN |
19,731 | - |
|
Datasheet | - | 10-XFDFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI | 0.9V ~ 5.5V | - | 0.6µA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 10-DFN (2.6x2.6) |
|
PCF85063AT/AYPCF85063AT - Tiny Real-Time Cloc |
68,624 | - |
|
Datasheet | - | 8-SOIC (0.154", 3.90mm Width) | Bulk | Active | - | Clock/Calendar | Alarm, Leap Year, Square Wave Output | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C | 0.9V ~ 5.5V, 1.8V ~ 5.5V | - | 0.6µA @ 3.3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 8-SOIC |
|
PCF85263AUKZIC RTC CLK/CALENDAR I2C 12WLCSP |
39,965 | - |
|
Datasheet | - | 12-XFBGA, WLCSP | Tape & Reel (TR) | Last Time Buy | Not Verified | Clock/Calendar | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | I2C | 0.9V ~ 5.5V, 1.8V ~ 5.5V | 0.9V ~ 5.5V | 0.885µA @ 3.3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 12-WLCSP (1.19x0.94) |
|
PCF2123BS/1,518IC RTC CLK/CALENDAR SPI 16HVQFN |
4,733 | - |
|
Datasheet | - | 16-VFQFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI | 1.6V ~ 5.5V | - | 0.33µA ~ 0.38µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 16-HVQFN (3x3) |
|
PCF8564AU/5GB/1,01IC RTC CLOCK/CALENDAR I2C DIE |
4,074 | - |
|
Datasheet | - | Die | Bulk | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, Watchdog Timer | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1V ~ 5.5V | - | 0.6µA ~ 0.75µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | Die |
|
|
PCF8564AU/5BB/1,01IC RTC CLOCK/CALENDAR I2C DIE |
1,485 | - |
|
Datasheet | - | Die | Bulk | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, Watchdog Timer | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1V ~ 5.5V | - | 0.6µA ~ 0.75µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | Die |
|
|
PCF2123U/12HA/1,00IC RTC CLOCK/CALENDAR SPI DIE |
1,550 | - |
|
Datasheet | - | Die | Bulk | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI | 1.6V ~ 5.5V | - | 0.33µA ~ 0.38µA @ 2V ~ 5V | -40°C ~ 85°C | - | - | - | Die |
Real Time Clocks FAQ
Common questions about filtering, comparing and sourcing Real Time Clocks components.
How can I narrow the Real Time Clocks selection?
Use the available manufacturer and technical parameter filters to reduce the product list. Compare the remaining part numbers against your electrical, package and application requirements.
Should I confirm the datasheet before selecting a part?
Yes. Always review the manufacturer datasheet to confirm ratings, package, operating conditions and other technical details before finalizing a component for your design.
Can Winsun (HK) Electronics help source a specific Real Time Clocks part number?
Yes. Send the exact manufacturer part number and required quantity for availability, lead-time and quotation support.
Do you support BOM, shortage or alternative-part requirements?
Yes. You can submit a BOM or shortage list for sourcing assistance. Where appropriate, our team can also help review possible alternative-part options.
