Real Time Clock Modules

Micro Crystal offers a large portfolio of real time clocks. This includes highly accurate and extremely low-power real-time clocks. All real-time clocks have an integrated quartz in a very small ceramic package.

 

RV-4162-C7 Serie - Ultra Small Size RTC

The RV-4162-C7 is a real-time clock with integrated quartz in an extremely small package with the following dimensions: 3.2mm x 1.5mm x 0.8mm.

Main Features:

• RTC module with built-in “Tuning Fork” crystal oscillating at 32.768 kHz
• Ultra low power consumption: 350nA typ @ VDD = 3.0V
• Wide clock operating voltage: 1.0 – 4.4V
• Wide interface operating voltage: 1.3 – 4.4V
• Counters for tenths/hundredths of seconds, minutes, hours, day, date, month, year, and century
• 400 kHz I2C serial interface
• Software clock calibration to compensate deviation of crystal due to temperature
• Ultra-small, 1.5 mm x 3.2 mm, lead-free 8-pin ceramic package

Ordering Information		Features
RV-4162-C7-STD-020		±20 ppm @ +25°C, -40°C to +85°C Operating

RV-4162-C7 Press Release

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RV-8523-C3 Serie - Ultra Low Power RTCs

The RV-8523-C3 Series has been specially designed to achieve an ultra-low power consumption of typically 130nA at 3.0V in time keeping mode.

The internal offset compensation register offers the possibility to achieve a accuracy of up to ±3 ppm at 25°C.

 

Main Features:

• RTC module with built-in “Tuning Fork” crystal oscillating at 32.768 kHz
• Ultra low power consumption: 130nA typ @ VDD = 3.0V
• Wide clock operating voltage: 1.2 – 5.5V
• Wide interface operating voltage: 1.6 – 5.5V
• Frequency offset compensation register for improved time accuracy
• Provides year, month, day, weekday, hours, minutes, seconds
• Alarm and timer functions, internal low-voltage detector, power-on reset and watchdog function.
• Open-drain interrupt and programmable CLKOUT pins for peripheral devices
• Small and compact package-size of 3.7 x 2.5 x 0.9mm

Ordering Information	Features
RV-8523-C3-TA-QC-020	±20 ppm @ +25°C, -40°C to +85°C Operating

RV-8523-C3 Press Release

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RV-2123-C2 Serie - Ultra Low Power RTCs

The RV-2123-C2 Series has been specially designed to achieve an ultra-low power consumption of typically 130nA at 3.0V in time keeping mode.

The internal offset compensation register offers the possibility to achieve an accuracy of up to ±3 ppm at 25°C.

 

Main Features:

• RTC module with built-in “Tuning Fork” crystal oscillating at 32.768 kHz
• Ultra low power consumption: 130nA typ @ VDD = 3.0V
• Wide clock operating voltage: 1.1 – 5.5V
• Wide Interface operating voltage: 1.6 – 5.5V
• Frequency offset compensation register for improved time accuracy
• 4-wire SPI-interface with a maximum data rate of 6.25 Mbits/s.
• Provides year, month, day, weekday, hours, minutes, seconds
• Alarm and timer functions, internal low-voltage detector, power-on reset and watchdog function.
• Open-drain interrupt and programmable CLKOUT pins for peripheral devices
• Small and compact package-size of 5.0 x 3.2 x 1.2mm

Ordering Information	Features
RV-2123-C2-STD-010	±10 ppm @ +25°C, -40°C to +85°C Operating
RV-2123-C2-STD-020	±20 ppm @ +25°C, -40°C to +85°C Operating

RV-2123-C2 Press Release

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RV-30x9-C2/C3 Serie - Extremely Accurate RTCs

The main feature of the RV-30x9-C2/C3 series is the extremely temperature stable time function with a discrepancy of maximal ±25 ppm at -40°C to +85°C for option B parts or ±6 ppm at -40°C to +85°C for option A parts. These real time clocks are available with SPI- or I²C-Interface.

 

Main Features:

RV-30x9-C2/C3 Time Accuracy

Option A	Option B
±3 ppm           @ +25°C	±  3 ppm           @ +25°C
±4 ppm from    0°C to +50°C	±  5 ppm from    0°C to +50°C
±6 ppm from -40°C to +85°C	±25 ppm from -40°C to +85°C
±8 ppm from -40°C to +125°C	±30 ppm from -40°C to +125°C

• RTC module with built-in “Tuning Fork” crystal oscillating at 32.768 kHz
• High time accuracy
  • ±  6 ppm from -40°C to +85°C for option A devices
  • ±25 ppm from -40°C to +85°C for option B devices
• Backup battery switch-over
• Trickle charger
• 8 Bytes user RAM
• 2 Bytes user EEPROM
• One 16-bit timer
• Watch- and alarm-page each for seconds, minutes, hours, day of week, date, month and year in BCD format
• Temperature sensor
•  Extended temperature range from -40° to +125°C
•  SPI or I²C interface
• Small ceramic SON package (-C2: 5.0mm x 3.2mm; -C3: 3.7mm x 2.5mm)

Ordering Information	Option B Features
RV-3029-C2-STD-025	±25 ppm over -40°C to +85°C, I²C Interface
RV-3029-C2-T1-030	±30 ppm over -40°C to +125°C, I²C Interface
RV-3049-C2-STD-025	±25 ppm over -40°C to +85°C, SPI Interface
RV-3049-C2-T1-030	±30 ppm over -40°C to +125°C, SPI Interface

RV-3029-C2 Press Release

RV-3049-C2 Press Release

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RV-8564-C2/C3 Serie - Low Power RTCs

This part can be used as replacement part for the Epson RX-8564CF.

The RV-8564 series is suitable for low power applications. This real time clock need just 250nA at a supply voltage of 3.0V and has an I²C interface.

 

Main Features:

• RTC module with built-in “Tuning Fork” crystal oscillating at 32.768 kHz
• Wide clock operating voltage: 1.2 – 5.5V
• Wide interface operating voltage: 1.8 – 5.5V
• Low power consumption: 250nA typ @ VDD = 3.0V
• Provides year, month, day, weekday, hours, minutes, seconds
• Alarm and timer functions
• Century flag
• Low-voltage detector, internal power-on reset
• Programmable clock output for peripheral devices
• 400kHz I²C interface
• Small ceramic SON package (-C2: 5.0mm x 3.2mm; -C3: 3.7mm x 2.5mm)

Ordering Information	Features
RV-8564-C2-STD-010	±10 ppm @ +25°C, -40°C to +85°C Operating
RV-8564-C2-STD-020	±20 ppm @ +25°C, -40°C to +85°C Operating
RV-8564-C2-T1-010	±10 ppm @ +25°C, -40°C to +125°C Operating
RV-8564-C2-T1-020	±20 ppm @ +25°C, -40°C to +125°C Operating

RV-8564-C2 Press Release

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RV-1805-C3 Serie - Ultra Low Power RTC Module

The RV-1805-C3 RTC module (with integrated quartz crystal) is setting new standard for ultra-low current consumption. 60nA current consumption in the crystal oscillator mode is extremely impressive. However the RV-1805-C3 also has an even lower current (17nA) mode using an RC oscillator that is periodically calibrated to the crystal reference. Calibration of the RC oscillator is also programmable to allow for best precision or lowest current consumption depending on the system requirements.

This Low Power RTC is targeted at high-volume battery-powered applications where the low current consumption has a significant impact on the product performance.

 

Main Features:

• Extreme Low Current consumption: 60 nA @ VDD 3.0V for 32.768 kHz XTAL mode
• Factory calibrated Time accuracy typ. ±2.0ppm @ 25°C
• Miniature SMT ceramic package with integrated Quartz Crystal for best Noise & EMI Immunity
• Automatic Battery Switchover, Trickle Charger, Power Management & Power Switch Function
• Programmable CLKOUT frequencies
• I2C Bus Interface (fast mode 400kHz)
• Time keeping mode down to 1.5 V
• Programmable Alarm, Timer and INT
• 512 Bytes of User RAM

Ordering Information		Features
RV-1805-C3		±20 ppm @ +25°C, -40°C to +85°C Operating

RV-1805-C3 Press Release

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RV-8803-C7 Serie - High Performance Real Time Clock

The RV-8803-C7 is the first temperature compensated RTC optimized for ultra-low power consumption to replace expensive batteries and super caps with low cost MLCC capacitors for battery backup operation.

The current consumption of 240nA and operation down to 1.5V significantly increases the operational life of backup supplies and allows for potential use of low cost MLCC capacitors as a short term backup solution. All this while providing accuracy of ±3.0 ppm (±0.26 seconds/day) over a temperature range of ­‑40° to +85°C.  In addition to the lowest current and best accuracy of all temperature-compensated RTCs, the RV-8803-C7 also has the smallest ceramic package in the industry with an integrated 32.768 KHz quartz crystal.

The RTC’s accurate timekeeping together with reliability of a power failure backup makes it ideal for a wide range of applications.

 

Main Features:

• Extremely Accurate RTC Module with embedded Quartz Crystal
• Ultra Low Power consumption
• I2C Interface
• Automotive qualified, according to AEC-Q200 Rev. C
• Temperature Compensation:    0°C to +50°C→ ± 0.13 s/day ± 1.5 ppm
• Temperature Compensation:-40°C to +85°C→ ± 0.26 s/day ± 3.0 ppm
• Standard Clock & Calendar function tracks second, minute, hour in 24-hour format, year and leap -year flags
• Time function, Alarm function, temperature sensor, time stamp, event input, user RAM, I2C-bus

Ordering Information		Features
RV-8803-C7		±1.5ppm 0°C to +50°C ±3.0ppm -40°C to +85°C

RV-8803-C7 Press Release