Real Time Clocks
Real Time Clocks (RTCs) provide time and/or date information in almost any electronic device which needs to keep accurate time. The clock types are binary counter, clock/calendar/supervisor, elapsed time counter, phantom time chip, portable system controller, temperature recorder, time event recorder, and timer clock peripheral. They contain memory sizes ranging from 2 B to 2 MB and have interface options of I2C, Parallel, Serial, SPI, 1-Wire, 2-Wire, 3-Wire, and 4-Wire.
Sourcing Epson Real Time Clocks: in-stock lines for quick ship, BOM matching for multi-line builds, and original-channel screening — not keyword stuffing.
Product List
Total Components: 260
| Product | Pricing | Datasheet | Features | Memory Size | Time Format | Date Format | Interface | Voltage - Supply, Battery | Current - Timekeeping (Max) | Type | Mounting Type | Operating Temperature | Voltage - Supply | Package / Case | Supplier Device Package | Stock & Quantity |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 RX8900SA:UBB PURE SN Epson | 1 $4.7170 | Alarm | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C | 1.6V ~ 5.5V | 1.4µA ~ 1.5µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 2.5V ~ 5.5V | 14-SOIC (0.197", 5.00mm Width) | 14-SOP | 2,290 | |
RX8900SA:UCB PURE SN Epson | 1 $4.7170 | Alarm | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C | 1.6V ~ 5.5V | 1.4µA ~ 1.5µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 2.5V ~ 5.5V | 14-SOIC (0.197", 5.00mm Width) | 14-SOP | 8,588 | |
 RX8900CE:UBB Epson | 1 $4.7541 | Alarm | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C | 1.6V ~ 5.5V | 1.4µA ~ 1.5µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 2.5V ~ 5.5V | 10-SMD, No Lead | 10-SMD | 4,603 | |
 RX-4571NB:B3 PURE SN Epson | 1 $5.0096 | Alarm, Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | 3-Wire Serial | - | 0.95µA ~ 1µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 1.6V ~ 5.5V | 22-LFDFN | 22-SON (5x6) | 1,165 | |
RX-8571NB:B3PURESN Epson | 1 $5.0096 | Alarm, Leap Year, RAM | 16B | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | - | 0.55µA ~ 0.6µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 1.6V ~ 5.5V | 22-LFDFN | 22-SON (5x6) | 2,440 | |
RX-4571NB:B Epson | 1 $5.2453 | Alarm, Leap Year | - | - | - | 3-Wire Serial | - | 0.95µA ~ 1µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 1.6V ~ 5.5V | 22-LFDFN | 22-SON (6.3x4.8) | 1,584 | |
RX-4801SA:UB PURE SN Epson | 1 $5.5095 | Alarm | - | - | - | 4-Wire Serial | - | 2.1µA ~ 3.4µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 1.6V ~ 5.5V | 14-SOIC (0.197", 5.00mm Width) | 14-SOP | 3,504 | |
RX-4803SA:UAB PURE SN Epson | 1 $5.6932 | Alarm, Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | SPI | - | 2.1µA ~ 3.4µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 1.6V ~ 5.5V | 14-SOIC (0.197", 5.00mm Width) | 14-SOP | 1,989 | |
RX-8803SA:UA PURE SN Epson | 1 $5.6932 | Alarm | - | HH:MM:SS | YY-MM-DD | I²C | - | 2.1µA ~ 3.4µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 1.6V ~ 5.5V | 14-SOIC (0.197", 5.00mm Width) | 14-SOP | 9,974 | |
RX-8035SA:AC3 PURE SN Epson | 1 $5.8385 | Alarm | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1V ~ 5.5V | 2.5µA @ 3V | Time Event Recorder | Surface Mount | -40°C ~ 85°C | 2.4V ~ 5.5V | 14-SOIC (0.197", 5.00mm Width) | 14-SOP | 3,583 | |
RX-8803SA:UB3 PURE SN Epson | 1 $4.9400 | Alarm | - | - | YY-MM-DD | I²C, 2-Wire Serial | - | 2.1µA ~ 3.4µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 1.6V ~ 5.5V | 14-SOIC (0.197", 5.00mm Width) | 14-SOP | 3,555 | |
RX4111CE B6 Epson | 1 $2.1000 | Alarm | - | HH:MM:SS | YY-MM-DD | SPI, 4-Wire Serial | - | 3µA @ 3V | Clock/Calendar | Surface Mount | -40°C ~ 85°C (TA) | 1.6V ~ 5.5V | 10-SMD, No Lead | 10-SMD | 7,400 | |
RX8804CE XB0 Epson | 1 $3.9900 | Alarm | - | HH:MM:SS | YY-MM-DD | I²C | - | 1.5µA ~ 1.6µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 105°C | 1.6V ~ 5.5V | 10-SMD, No Lead | 10-SMD | 8,922 | |
 RA-4574SA:B3 PURE SN Epson | Alarm, Leap Year | - | HH:MM:SS | YY-MM-DD-dd | SPI | - | 0.5µA ~ 1µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 1.6V ~ 5.5V | 14-SSOP (0.209", 5.30mm Width) | 14-SOP | 2,804 | ||
RTC-4543SA:A3 ROHS Epson | - | - | - | YY-MM-DD | 3-Wire Serial | - | 1µA ~ 3µA @ 2V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 2.5V ~ 5.5V | 14-SOIC (0.197", 5.00mm Width) | 14-SOP | 8,081 | ||
RX-4045SA:AA0 Epson | Alarm, Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | SPI | - | 1.2µA ~ 1.8µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 1.7V ~ 5.5V | 14-SOIC (0.197", 5.00mm Width) | 14-SOP | 3,995 | ||
 RX-8571LCB0 PURE SN Epson | 1 $3.7600 | Alarm, Leap Year, RAM | 16B | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | - | 0.55µA ~ 0.6µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 1.6V ~ 5.5V | 12-TFSOJ (0.094", 2.40mm Width) | 12-VSOJ | 2,310 | |
RX-8581NB:B3 Epson | 1 $5.4900 | Alarm, Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | - | 0.8µA ~ 1.2µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 1.8V ~ 5.5V | 22-SMD, 20 Leads, Flat Leads | 22-SON | 6,310 | |
RX-8581NB:B3 PURE SN Epson | 1 $5.4900 | Alarm, Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | - | 0.8µA ~ 1.2µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 1.8V ~ 5.5V | 22-LFDFN | 22-SON (5x6) | 6,370 | |
 RX-4571SA:B3 PURE SN Epson | 1 $3.8800 | Alarm, Leap Year | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | 3-Wire Serial | - | 0.95µA ~ 1µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 1.6V ~ 5.5V | 14-SOIC (0.209", 5.30mm Width) | 14-SOP | 2,919 |