Available 24/7 at
0755-82798135Real Time Clocks
Real Time Clock (RTC) ICs are timing components used to maintain accurate time and calendar information in electronic systems, even when the main power is turned off. They are widely used in embedded systems, industrial control, consumer electronics, communication equipment, medical devices, automotive electronics, IoT products, meters and data logging applications.
This category includes real time clock ICs, battery-backed RTCs, low-power RTCs, I2C RTCs, SPI RTCs, calendar clock ICs and related clock/timing components. These devices are commonly selected based on timekeeping accuracy, backup power support, interface type, alarm functions, operating voltage, current consumption, package type and application requirements.
TomatoElec supplies original Real Time Clock RTC ICs from recognized semiconductor manufacturers such as Microchip, NXP, STMicroelectronics, Renesas, Texas Instruments, Analog Devices, onsemi, Infineon and other major brands. As an in-stock electronic components supplier and independent distributor, TomatoElec provides inventory support, original component sourcing and BOM sourcing services for global customers.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
PCF85263AT/AJIC RTC CLOCK/CALENDAR I2C 8SO |
129,500 | - |
|
Datasheet |
- | 8-SOIC (0.154", 3.90mm Width) | 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, 2-Wire Serial | 0.9V ~ 5.5V | 0.9V ~ 5.5V | 0.885µA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 8-SO |
|
PCF85263ATT/AJIC RTC CLK/CALENDAR I2C 8TSSOP |
47,896 | - |
|
Datasheet |
- | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 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, 2-Wire Serial | 0.9V ~ 5.5V | 0.9V ~ 5.5V | 0.885µA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 8-TSSOP |
|
MCP79411-I/MSIC RTC CLK/CALENDAR I2C 8MSOP |
1,409 | - |
|
Datasheet |
- | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Square Wave Output, SRAM, Unique ID | 64B, 1Kb | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.8V ~ 5.5V | 1.3V ~ 5.5V | 1.2µA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 8-MSOP |
|
MCP79510-I/MSIC RTC CLK/CALENDAR SPI 10MSOP |
7,775 | - |
|
- |
- | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | Tube | Active | Not Verified | Clock/Calendar | Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID | 64B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | SPI | 1.8V ~ 3.6V | 1.3V ~ 3.6V | 1µA @ 1.8V ~ 3.6V | -40°C ~ 85°C | Surface Mount | - | - | 10-MSOP |
|
MCP79510T-I/MSIC RTC CLK/CALENDAR SPI 10MSOP |
3,881 | - |
|
- |
- | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Unique ID | 64B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | SPI | 1.8V ~ 3.6V | 1.3V ~ 3.6V | 1µA @ 1.8V ~ 3.6V | -40°C ~ 85°C | Surface Mount | - | - | 10-MSOP |
|
PCF85363ATT/AJIC RTC CLK/CALENDAR I2C 8TSSOP |
94,875 | - |
|
Datasheet |
- | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Watchdog Timer | 64B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 0.9V ~ 5.5V | 0.9V ~ 5.5V | 0.885µA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 8-TSSOP |
|
BQ32000DRIC RTC CLK/CALENDAR I2C 8SOIC |
7,820 | - |
|
Datasheet |
- | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Leap Year, Square Wave Output, Trickle-Charger | - | HH:MM:SS (24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 3V ~ 3.6V | 1.4V ~ 3.6V | 100µA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 8-SOIC |
|
PCF85363ATL/AXIC RTC CLK/CALENDAR I2C 10DFN |
17,041 | - |
|
Datasheet |
- | 10-XFDFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Watchdog Timer | 64B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 0.9V ~ 5.5V | 0.9V ~ 5.5V | 0.885µA @ 3.3V | -40°C ~ 85°C | Surface Mount | - | - | 10-DFN (2.6x2.6) |
|
PCA85073ADP/Q900ZIC RTC CLK/CALENDAR I2C 8TSSOP |
6,668 | - |
|
Datasheet |
- | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C | 1.8V ~ 5.5V | - | - | -40°C ~ 105°C (TA) | Surface Mount | Automotive | AEC-Q100 | 8-TSSOP |
|
PCF8563TS/5,118IC RTC CLK/CALENDAR I2C 8TSSOP |
3,432 | - |
|
Datasheet |
- | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, 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 | - | - | 8-TSSOP |
|
PCF2123TS/1,118IC RTC CLK/CALENDAR SPI 14TSSOP |
22,690 | - |
|
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 | - | 0.33µA ~ 0.38µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 14-TSSOP |
|
PCF8523T/1,118IC RTC CLOCK/CALENDAR I2C 8SO |
5,553 | - |
|
Datasheet |
- | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.6V ~ 5.5V | 1.8V ~ 5.5V | 0.5µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 8-SO |
|
RS5C348A-E2-FIC RTC CLK/CALENDAR SER 10SSOP |
24,547 | - |
|
Datasheet |
- | 10-LFSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | 4-Wire Serial | 2V ~ 5.5V | - | 1µA @ 3V | -40°C ~ 85°C | Surface Mount | - | - | 10-SSOP |
|
PCF8523TS/1,118IC RTC CLK/CALENDAR I2C 14TSSOP |
30,250 | - |
|
Datasheet |
- | 14-TSSOP (0.173", 4.40mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.6V ~ 5.5V | 1.8V ~ 5.5V | 0.5µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 14-TSSOP |
|
PCF8563T/F4,118IC RTC CLOCK/CALENDAR I2C 8SO |
23,953 | - |
|
Datasheet |
- | 8-SOIC (0.154", 3.90mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, 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 | - | - | 8-SO |
|
PCF8523TK/1,118IC RTC CLK/CALENDAR I2C 8HVSON |
27,744 | - |
|
Datasheet |
- | 8-VDFN Exposed Pad | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, Watchdog Timer | - | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I2C, 2-Wire Serial | 1.6V ~ 5.5V | 1.8V ~ 5.5V | 0.5µA @ 2V ~ 5V | -40°C ~ 85°C | Surface Mount | - | - | 8-HVSON (4x4) |
|
PCF8563TS/4,118IC RTC CLK/CALENDAR I2C 8TSSOP |
1,916 | - |
|
Datasheet |
- | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tape & Reel (TR) | Active | Not Verified | Clock/Calendar | Alarm, Leap Year, 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 | - | - | 8-TSSOP |
|
PCA8565TS/1,118IC RTC CLK/CALENDAR I2C 8TSSOP |
6,438 | - |
|
Datasheet |
- | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Tape & Reel (TR) | 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 | 1.8V ~ 5.5V | - | 1.2µA ~ 5µA @ 2V ~ 5V | -40°C ~ 125°C | Surface Mount | - | - | 8-TSSOP |
|
RX8130CE B0IC RTC TIME EVENT REC I2C 10SMD |
792 | - |
|
Datasheet |
RX8130CE | 10-SMD, No Lead | Tape & Reel (TR) | Active | Not Verified | Time Event Recorder | Alarm | - | - | - | I2C | 1.25V ~ 5.5V | - | 0.5µA @ 3V | -40°C ~ 85°C | Surface Mount | - | - | 10-SMD |
|
AM1805AQRTC ARTASIE I2C W/PWR MNGT 16QFN |
5,953 | - |
|
Datasheet |
Artasie | 16-VFQFN Exposed Pad | Tape & Reel (TR) | Active | - | Clock/Calendar | Alarm, Leap Year, RAM, Square Wave Output, Supervisor, Trickle Charger, Unique ID, Watchdog Timer | 256B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | I2C | 1.5V ~ 3.6V | 1.4V ~ 3.6V | 0.17µA ~ 0.22µA @ 1.8V ~ 3V | -40°C ~ 85°C (TA) | Surface Mount | - | - | 16-QFN (3x3) |

