Microchip MCP794XX Real-Time Clock/Calendar IC Family

Microchip Technology introduced their MCP794XX stand-alone I2C Real-Time Clock/Calendar (RTCC) family. The MCP794XX features on-chip EEPROM and SRAM, digital trimming for time-of-day calibration, battery-switchover, user-lockable section of EEPROM, 64-bit reprogrammable unique ID that can be factory-programmed with a MAC address. All six MCP794XX RTCC devices are available in 8-pin MSOP, SOIC, TSSOP and TDFN packages. The MCP79400 is priced at $0.64 each; the MCP79401, MCP79402 and MCP79410 at $0.70 each; and the MCP79411 and MCP79412 at $0.76 each, all in 10,000-unit quantities. The devices are ideal for smart-energy (thermostats, power meters and commercial refrigeration), home-appliance (stoves, dishwashers and microwave ovens), automotive (dashboard controls and car radios), and consumer-electronic markets (office equipment, irrigation controls and video systems).

Microchip Technology MCP794XX stand-alone I2C Real-Time Clock/Calendar (RTCC) family

Microchip MCP794XX Real-Time Clock/Calendar Features

  • Highly integrated with an automatic battery switchover for backup power
  • EEPROM, user SRAM and a unique ID with a MAC Address in a single device
  • Wide voltage range supports low power, but also operates in 5 volt systems
  • Serial interface for easy communications to any MCU
  • Unique ID can be unlocked by user
  • Digital trimming has wide adjustment range
  • Battery switchover includes a time stamp
  • Low operating voltage and current levels
  • Lower levels after switchover from Vcc to Vbat
  • Vbat timekeeping current < 700 nA
  • I2C interface
  • 8-pin industry standard pinout
  • Microchip standard development boards
  • No Programming: Blank ID (User programmed)
  • Factory Standard: MAC Address
  • Factory Custom: ID supplied by customer

More information: Microchip Technology