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Home » NEWEST Products » New by Manufacturer » Microchip Technology » MCP795xx / MCP795Wxx RTCCs - Microchip
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Microchip MCP795xx / MCP795Wxx RTCCs
Microchip MCP795xx / MCP795Wxx RTCCs

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Microchip MCP795xx / MCP795Wxx RTCCs

Microchip MCP795xx 3V SPI Real-Time Clock Calendar ICs (RTCCs) are 10-pin devices that provide accurate timekeeping over a wide temperature range, power-failure monitoring, and on-chip nonvolatile memory. These small-package devices offer many of the same features as the larger 14-pin MCP795Wxx family. Michrochip MCP795xx devices reduce overall component count in the system and eliminate user programming costs for a serial ID, making these RTCCs an ideal choice for the handheld, wireless, and consumer markets. These Microchip devices include 64 bytes of SRAM, 2 Kbits of EEPROM, and a 128-bit Unique ID that can be ordered blank or pre-programmed with a MAC address. MCP795xx RTCCs provide a wide digital trimming range, providing customers with high accuracy over a large temperature range. These Microchip devices also provide an on-chip power-fail timestamp feature that is not offered on any other SPI RTCC in the industry.


MCP795xx Features
  • Timekeeping
    • Real-Time Clock/Calendar: Hours, Minutes, Seconds, Hundredth of Seconds, Day of Week, Month, Year, Leap Year
    • Crystal Oscillator requires External 32,768 kHz Tuning Fork Crystal and Load Capacitors.
    • Clock Out Function: 1Hz, 4.096kHz, 8.192kHz, 32.768kHz
    • 2 Programmable Alarms
    • Programmable open drain output - Alarm or Interrupt
    • On-Chip Digital Trimming/Calibration: +/- 255PPM range in 1PPM steps
    • Power-Fail Time-Stamp @ Battery Switchover: Logs time when VCC fails and VCC is restored
  • Low-Power
    • Wide Operating Voltage:
      • VCC: 1.8V to 3.6V
      • VBAT: 1.3V to 3.6V
    • Low Operating Current:
      • VCC Standby Current < 1uA @ 3V
      • VBAT Timekeeping Current: <700nA @ 1.8V
    • Automatic Battery Switchover from VCC to VBAT: Backup power for timekeeping and SRAM retention
  • User Memory
    • 64-Byte Battery-Backed SRAM
    • 2Kbit and 1Kbit EEPROM Memory
    • 128-Bit Unique ID in Protected Area of EEPROM:
      • Available blank or pre-programmed
      • EUI-48™ or EUI-64™ MAC address
      • Unlock sequence for user programming
  • Operating Range: SPI Clock Speed up to 5MHz
  • Operating Temperature Range: -40°C to +85°C.
  • Packages include 10-Lead MSOP and TDFN
MCP795Wxx Features
  • Timekeeping
    • Real-Time Clock/Calendar: Hours, Minutes, Seconds, Hundredth of Seconds, Day of Week, Month, Year, Leap Year
    • Crystal Oscillator requires External 32,768 kHz Tuning Fork Crystal and Load Capacitors.
    • Clock Out Function: 1Hz, 4.096kHz, 8.192kHz, 32.768kHz
    • 32kHz Boot-up Clock at Power-up (MCP795BXX)
    • 2 Programmable Alarms - Supports IRQ or WDO
    • Programmable open drain output - Alarm or Interrupt
    • On-Chip Digital Trimming/Calibration: +/255PPM range in 1PPM steps
    • Power-Fail Time-Stamp @ Battery Switchover: Logs time when VCC fails and VCC is restored
  • Low-Power
    • Wide Operating Voltage:
      • VCC: 1.8V to 5.5V
      • VBAT: 1.3V to 5.5V
    • Low Operating Current:
      • VCC Standby Current <1uA @ 3V
      • VBAT Timekeeping Current: <700nA @ 1.8V
    • Automatic Battery Switchover from VCC to VBAT: Backup power for timekeeping and SRAM retention
  • User Memory
    • 64Byte Battery-Backed SRAM
    • 2Kbit and 1 Kbit EEPROM Memory
    • 128-Bit Unique ID in Protected Area of EEPROM:
      • Available blank or preprogrammed
      • EUI-48™ or EUI-64™ MAC address
      • Unlock sequence for user programming
  • Operating Temperature Range: -40°C to +85°C.
  • Packages include 14-Lead SOIC and TSSOP
Part Number Pins EEPROM (Kbits) Unique ID
MCP79510 10 1 Blank
MCP79511 10 1 EUI-48
MCP79512 10 1 EUI-64
MCP79520 10 2 Blank
MCP79521 10 2 EUI-48
MCP79522 10 2 EUI-64
MCP795B10 14 1 Blank
MCP795B11 14 1 EUI-48
MCP795B12 14 1 EUI-64
MCP795B20 14 2 Blank
MCP795B21 14 2 EUI-48
MCP795B22 14 2 EUI-64
MCP795W10 14 1 Blank
MCP795W11 14 1 EUI-48
MCP795W12 14 1 EUI-64
MCP795W20 14 2 Blank
MCP795W21 14 2 EUI-48
MCP795W22 14 2 EUI-64

MCP795xx Block Diagram

MCP795xx Block Diagram
  • Microchip Technology
  • Semiconductors|Integrated Circuits|IC-Clock & Timer