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 EM Microelectronic 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: 15
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 V3021SO8A+ EM Microelectronic | 1 $3.1600 | Alarm, Leap Year, RAM | 1B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | 3-Wire Serial | - | 10µA @ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C (TA) | 2V ~ 5.5V | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 6,988 | |
 A3024SO20A+ EM Microelectronic | 1 $5.6115 | Alarm, Leap Year, RAM | 8B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | - | - | 10µA ~ 15µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C (TA) | 2V ~ 5.5V | 20-SOIC (0.295", 7.50mm Width) | 20-SO | 2,658 | |
 V3025SO28B+ EM Microelectronic | 1 $8.2406 | Alarm, Leap Year, RAM | 8B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | - | 2V ~ 4V | 15µA @ 5.5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C (TA) | 2V ~ 5.5V | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC | 9,184 | |
V3025SO28A+ EM Microelectronic | 1 $12.0400 | Alarm, Leap Year, RAM | 8B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | - | - | 15µA @ 5.5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C (TA) | 2V ~ 5.5V | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC | 3,259 | |
V3022SO28A+ EM Microelectronic | 1 $11.2400 | Alarm, Leap Year, RAM | 8B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | - | - | 15µA @ 3V | Clock/Calendar | Surface Mount | -40°C ~ 85°C (TA) | 2V ~ 5.5V | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC | 1,527 | |
V3023SO28A+ EM Microelectronic | Alarm, Leap Year, RAM | 8B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | - | - | 15µA @ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C (TA) | 2V ~ 5.5V | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC | 7,749 | ||
 RV-8803-C7-TA-QC EM Microelectronic | Alarm, Leap Year, RAM | - | HH:MM:SS | YY-MM-DD-dd | I²C | - | 0.35µA @ 3V | Clock/Calendar | Surface Mount | -40°C ~ 85°C (TA) | 1.5V ~ 5.5V | 8-WCDFN | 8-SON (3.2x1.5) | 2,165 | ||
 EM3028V3TP14B EM Microelectronic | 1 $1.6600 | Alarm, EEPROM, Leap Year, Square Wave Output, SRAM, Trickle-Charger | 43B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | I²C, 2-Wire Serial | 1.1V ~ 5.5V | 0.4µA @ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C | 1.1V ~ 5.5V | 14-TSSOP (0.173", 4.40mm Width) | 14-TSSOP | 5,400 | |
V3020SO8A+ EM Microelectronic | 1 $3.1600 | Alarm, Leap Year, RAM | 1B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | 3-Wire Serial | - | 0.8µA @ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C (TA) | 1.2V ~ 5.5V | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 6,909 | |
 V3020TP8A+ EM Microelectronic | 1 $3.3400 | Alarm, Leap Year, RAM | 1B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | 3-Wire Serial | - | 0.8µA @ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C (TA) | 1.2V ~ 5.5V | 8-TSSOP (0.173", 4.40mm Width) | 8-TSSOP | 3,479 | |
EM3027IDSSO8B+ EM Microelectronic | 1 $36.1428 | Alarm, EEPROM, Leap Year, RAM, Trickle-Charger | 8B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C, SPI | 1.4V ~ 5.5V | 0.4µA @ 5V | Clock/Calendar | Surface Mount | -40°C ~ 125°C (TA) | 1.4V ~ 5.5V | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 100,000 | |
V3020SO8B+ EM Microelectronic | 1 $1.7085 | Alarm, Leap Year, RAM | 1B | HH:MM:SS | YY-MM-DD-dd | 3-Wire Serial | - | 4µA ~ 7µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C (TA) | 1.2V ~ 5.5V | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 7,578 | |
V3020TP8B+ EM Microelectronic | 1 $1.8035 | Alarm, Leap Year, RAM | 1B | HH:MM:SS | YY-MM-DD-dd | 3-Wire Serial | - | 4µA ~ 7µA @ 3V ~ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C (TA) | 1.2V ~ 5.5V | 8-TSSOP (0.173", 4.40mm Width) | 8-TSSOP | 4,915 | |
 EM3028C7B+ EM Microelectronic | 1 $1.9607 | Alarm, EEPROM, Leap Year, Square Wave Output, Trickle-Charger | 43B | HH:MM:SS (12/24 hr) | YY-MM-DD-dd | I²C | 1.1V ~ 5.5V | 0.4µA @ 5V | Clock/Calendar | Surface Mount | -40°C ~ 85°C (TA) | 1.1V, 1.2V, 2V ~ 5.5V | 8-SMD | SMD | 2,572 | |
V3020XSO8A+ EM Microelectronic | 1 $2.5598 | Alarm, Leap Year, RAM | 1B | HH:MM:SS:hh (12/24 hr) | YY-MM-DD-dd | 3-Wire Serial | - | 7µA @ 5V | Clock/Calendar | Surface Mount | -40°C ~ 125°C (TA) | 1.2V ~ 5.5V | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC | 1,888 |