Real-Time Clocks (RTC)
Real-time clocks keep calendar time on very little current, often from a coin cell or supercapacitor, while the main system sleeps. Engineers compare timekeeping accuracy, integrated or external crystal, backup current, alarms, interface, and temperature compensation. Compare RTC prices, stock, and lifecycle status from distributors on Circuit Center.
Manufacturers listed in Real-Time Clocks (RTC) on Circuit Center include Analog Devices (Maxim), NXP, Microchip, Micro Crystal, Renesas, Abracon, Epson and STMicroelectronics.
Real-Time Clocks (RTC) parts
- AB1805-T3 — Abracon · Ultra-low power RTC, 14nA, I2C, 256B RAM, QFN-16
- ISL12022MIBZ — Renesas · I2C RTC with battery-backed SRAM, 128B, temp sensor, MSOP-8
- DS1307Z+T&R — Analog Devices (Maxim) · I2C serial RTC, 56-byte NV RAM, 5V, SO-8
- M41T00SM6F — STMicroelectronics · Serial I2C real-time clock, SO-8
- ISL12057AIBZ-T7A — Renesas · I2C RTC with TCXO, +/-2ppm, battery backup, MSOP-10
- SD2405ALPI — WHWAVE · I2C RTC with built-in crystal, 32.768kHz, DIP-8
- RV-1805-C3 — Micro Crystal · Ultra-low power I2C RTC, 22nA, auto-calibration, 1.5x3.2mm
- PCF85063AT/AY — NXP · Tiny I2C RTC, 0.22uA, minute/half-minute interrupt, SO-8
- DS1302Z+T&R — Analog Devices (Maxim) · Trickle-charge timekeeping chip, SPI, 3-wire, SO-8
- AB-RTCMC-32.768KHZ-AINL-T — Abracon · Ultra-miniature RTC module, 32.768kHz, I2C, 1.6x1.0mm
- MCP79410-I/SN — Microchip · I2C RTCC with battery, 1Kb EEPROM, 64B SRAM, unique ID, SO-8
- PCF2127T/2,518 — NXP · I2C/SPI RTC with integrated quartz crystal, timestamp, SO-16
- RX8111CE-UB — Epson · I2C RTC with DTCXO, +/-3.4ppm, 10-pin SON, ultra-low 0.08uA
- PCF2131TN/1,118 — NXP · Nano-power RTC with 2x backup supply switch, I2C/SPI, HVQFN-20
- DS1340Z-33+T&R — Analog Devices (Maxim) · I2C RTC with trickle charger, 3.3V, SO-8
- DS3231SN#T&R — Analog Devices (Maxim) · Extremely accurate I2C RTC with TCXO, +/-2ppm, 3.3V, SO-16W
- DS3231MZ+ — Analog Devices (Maxim) · Accurate I2C RTC with TCXO, +/-3.5ppm, 3.3V, SO-8
- RV-3032-C7 — Micro Crystal · I2C RTC, 160nA, +/-1ppm TCXO, temp sensor, QFN-10
- MCP79402-I/SN — Microchip · I2C RTCC with battery, 64B EEPROM, EUI-48/64 MAC address, SO-8
- RX8900CE-UB — Epson · I2C RTC with DTCXO, +/-3.4ppm, ultra-low power 0.7uA, SOP-14
- PCF85063TP/1Z — NXP · Tiny I2C RTC, 0.22uA, DFN-10
- PCF85263AT/AJ — NXP · Tiny I2C RTC, 22nA standby, watchdog, SO-8
- PCF8563T/5,518 — NXP · I2C RTC/calendar, low power, SO-8
- PT7C4337ALEX — Diodes Inc. · I2C RTC with 56-byte NV SRAM, battery backup, TSSOP-8
- BQ32000DR — Texas Instruments · I2C RTC, trickle charge, calibration, watchdog timer, SO-8