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Datasheet Microchip MCP79520-I/MS

Part NumberMCP79520-I/MS

The MCP79520 SPI RTCC is highly integrated with memory and advanced features normally found in higher priced devices


  • Download » Datasheet PDF, 708 Kb, File published: Dec 13, 2016
    MCP7951X/MCP7952X Battery-Backed SPI RTCC Data Sheet
    Docket ↓
    Battery-Backed SPI Real-Time Clock/Calendar Part Number SRAM
    (Bytes) EEPROM
    (Kbits) Unique ID MCP79510 64 1 Blank MCP79520 64 2 Blank MCP79511 64 1 EUI-48в„ў MCP79521 64 2 EUI-48в„ў MCP79512 64 1 EUI-64в„ў MCP79522 64 2 EUI-64в„ў Timekeeping Features Real-Time Clock/Calendar (RTCC):
    -Hours, minutes, seconds, hundredth of
    seconds, day of week, date, month, year
    -Leap year compensated to 2399
    -12/24-hour modes Oscillator for 32.768 kHz Crystals:
    -Optimized for 6-9 pF crystals On-Chip Digital Trimming/Calibration:
    -В±1 ppm resolution
    -В±259 ppm range Dual Programmable Alarms Clock Output Function with Selectable Frequency Power-Fail Timestamp:
    -Time logged on switchover to and from Battery
    mode Low-Power Features Wide Voltage Range:
    -Operating voltage range of 1.8V to 3.6V
    -Backup voltage range of 1.3V to 3.6V Low Typical Timekeeping Current:
    -Operating from VCC: 1.2 ВµA at 3.0V
    -Operating from VBAT: 1.0 ВµA at 3.0V Automatic Switchover to Battery Backup 128-Bit Protected EEPROM Area:
    -Robust write unlock sequence
    -EUI-48в„ў MAC address (MCP795X1)
    -EUI-64в„ў MAC address (MCP795X2) Operating Ranges SPI Serial Interface:
    -SPI clock rate up to 5 MHz Temperature Range:
    -Industrial (I): -40В°C to +85В°C Packages 10-Lead MSOP and TDFN Package Types (not to scale)
    MSOP/TDFN ...



Lifecycle StatusProduction (Appropriate for new designs but newer alternatives may exist)




32KHz Boot ClockNO
Alarms2 Alarms (0.01sec)
Digital_Trimming-255 to +255ppm (1 ppm steps)
Ibat Current700 nA
Operating Temperature Range-40 to +85 °C
Power-Fail TimestampVCC Fail and VCC Restore
Temperature Range-40 to +85
Unique IDBlank MAC_Address
User SRAM64 Bytes
Vbat Range1.3 - 3.6 V
Vcc Range1.8 - 3.6 V
Watchdog TimerNO

Eco Plan


Other Options

MCP79510 MCP79511 MCP79512 MCP79521 MCP79522

Moldel Line

Series: MCP79520 (3)

Manufacturer's Classification

  • Clock and Timing > Real-Time Clock > RTCC SPI

Other Names:

MCP79520I/MS, MCP79520 I/MS

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