RX8111CE/RX4111CE Real-Time Clocks

Epson RX8111CE/RX4111CE ultra-low power RTC modules with an integrated 32 kHz crystal come in a compact 3.2 mm x 2.5 mm package

Image of Epson RX8111CE/RX4111CE Real-Time ClocksEpson RX8111CE and RX4111CE real-time clock (RTC) modules integrate a 32.768 kHz crystal into the package, saving PCB space and eliminating the need to design an external oscillator circuit. Both come in a compact 3.2 mm x 2.5 mm package.

The RX8111CE and RX4111CE provide ultra-low power consumption both at component and system level. As standalone components, these RTCs consume very low power utilizing Epson’s low ESR crystals and in-house IC design and manufacturing. On the system level, the RX8111CE and RX4111CE allow users to power down their system and switch to backup battery operation where these components only consume 100 nA typical while still keeping time. Backup power mode can be automatically enabled via auto power switching when VDD falls below operation levels.

Additional features include wakeup timer, time stamping, selectable output frequency, alarm, and self-monitoring (crystal oscillation, VDD low, and VBAT low). The RX4111CE uses SPI, while the RX8111CE uses I2C interface.

Features
  • SPI interface (RX4111CE)
  • I2C interface (RX8111CE)
  • Built-in 32 kHz crystal
  • Auto-power switching
  • Battery backup
  • Frequency selectable (32.768 kHz, 1024 Hz, 1 Hz)
  • Wakeup timer
  • Alarm function
  • Self-monitoring (crystal oscillation, VBAT low, VDD low)
  • Time stamp function
Applications
  • Security systems
  • Patient monitoring
  • Wearable devices
  • Battery operated devices
  • Industrial automation
  • IoT devices
  • Medical devices
  • Smart meters
  • Infotainment
  • Battery management systems

RX8111CE/RX4111CE Real-Time Clocks

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
IC RTC CLK/CALENDAR I2C 10SMDRX8111CE B0IC RTC CLK/CALENDAR I2C 10SMD0 - Immediate$21.68View Details
IC RTC CLK/CALENDAR I2C 10SMDRX8111CE A0IC RTC CLK/CALENDAR I2C 10SMD2962 - Immediate$24.47View Details
IC RTC CLK/CALENDAR I2C 10SMDRX8111CE B3IC RTC CLK/CALENDAR I2C 10SMD113 - Immediate$38.92View Details
IC RTC CLK/CALENDAR I2C 10SMDRX8111CE A3IC RTC CLK/CALENDAR I2C 10SMD338 - Immediate$33.83View Details
IC RTC CLK/CALENDAR I2C 10SMDRX8111CE B6IC RTC CLK/CALENDAR I2C 10SMD0 - Immediate$6.49View Details
IC RTC CLK/CALENDAR I2C 10SMDRX8111CE A6IC RTC CLK/CALENDAR I2C 10SMD0 - Immediate$7.73View Details
IC RTC CLK/CALENDAR I2C 10SMDRX8111CE BBIC RTC CLK/CALENDAR I2C 10SMD0 - Immediate$18.88View Details
IC RTC CLK/CALENDAR I2C 10SMDRX8111CE ABIC RTC CLK/CALENDAR I2C 10SMD0 - Immediate$24.90View Details
IC RTC CLK/CALENDAR SPI 10SMDRX4111CE B6IC RTC CLK/CALENDAR SPI 10SMD2562 - Immediate$23.98View Details
IC RTC CLK/CALENDAR SPI 10SMDRX4111CE A6IC RTC CLK/CALENDAR SPI 10SMD0 - Immediate$9.07View Details
IC RTC CLK/CALENDAR SPI 10SMDRX4111CE B3IC RTC CLK/CALENDAR SPI 10SMD0 - Immediate$23.01View Details
IC RTC CLK/CALENDAR SPI 10SMDRX4111CE BBIC RTC CLK/CALENDAR SPI 10SMD0 - Immediate$24.26View Details
IC RTC CLK/CALENDAR SPI 10SMDRX4111CE A3IC RTC CLK/CALENDAR SPI 10SMD0 - Immediate$27.92View Details
IC RTC CLK/CALENDAR SPI 10SMDRX4111CE ABIC RTC CLK/CALENDAR SPI 10SMD0 - Immediate$29.43View Details
Published: 2024-09-23