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Datasheet Microchip MCP795W21

ManufacturerMicrochip
SeriesMCP795W21

The MCP795W21 SPI RTCC is highly integrated with memory and advanced features normally found in higher priced devices

Datasheets

  • Download » Datasheet, PDF, 875 Kb, 06-21-2016
    MCP795W1X/MCP795W2X SPI RTCC with Enhanced Features and Battery Switchover
    Docket ↓
    MCP795W1X/MCP795W2X
    Battery-Backed SPI Real-Time Clock/Calendar with Enhanced Features
    Device Selection Table User Memory Part Number EEPROM
    (Kbits) Protected
    EEPROM MCP795W10 1 Blank MCP795W20 2 Blank MCP795W11 1 EUI-48™ MCP795W21 2 EUI-48™ MCP795W12 1 EUI-64™ MCP795W22 2 EUI-64™ 64-Byte Battery-Backed SRAM 1 Kbit or 2 Kbit EEPROM:
    -Software write-protect
    -Page write up to 8 bytes
    -Endurance: 1M erase/write cycles 128-Bit Protected EEPROM Area:
    -Robust write unlock sequence
    -EUI-48™ MAC address (MCP795WX1)
    -EUI-64™ MAC address (MCP795WX2) 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:
    -±1 ppm resolution
    -±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 µA at 3.0V ...

Prices

Status

MCP795W21-I/SLMCP795W21-I/STMCP795W21T-I/SLMCP795W21T-I/ST
Lifecycle StatusProduction (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)Production (Appropriate for new designs but newer alternatives may exist)

Packaging

Parametrics

MCP795W21-I/SLMCP795W21-I/STMCP795W21T-I/SLMCP795W21T-I/ST
32KHz Boot ClockNoNoNoNo
Alarms2 Alarms (0.01sec)2 Alarms (0.01sec)2 Alarms (0.01sec)2 Alarms (0.01sec)
Digital_Trimming-255 to +255ppm (1 ppm steps)-255 to +255ppm (1 ppm steps)-255 to +255ppm (1 ppm steps)-255 to +255ppm (1 ppm steps)
EEPROM, Kbits2222
Event Detects2222
Ibat Current, nA700700700700
InterfaceSPISPISPISPI
Operating Temperature Range, °C-40 to +85-40 to +85-40 to +85-40 to +85
OutputsIRQ WDO CLKOUTIRQ WDO CLKOUTIRQ WDO CLKOUTIRQ WDO CLKOUT
Power-Fail TimestampVCC Fail and VCC RestoreVCC Fail and VCC RestoreVCC Fail and VCC RestoreVCC Fail and VCC Restore
Temperature Range-40 to +85-40 to +85-40 to +85-40 to +85
Unique ID, MAC_AddressEUI-48EUI-48EUI-48EUI-48
User SRAM, Bytes64646464
Vbat Range, V1.3 - 3.61.3 - 3.61.3 - 3.61.3 - 3.6
Vcc Range, V1.8 - 3.61.8 - 3.61.8 - 3.61.8 - 3.6
Watchdog TimerYesYesYesYes

Eco Plan

MCP795W21-I/SLMCP795W21-I/STMCP795W21T-I/SLMCP795W21T-I/ST
RoHSCompliantCompliantCompliantCompliant

Other Options

MCP795W10 MCP795W11 MCP795W12 MCP795W20 MCP795W22

Moldel Line

Series: MCP795W21 (4)

Manufacturer's Classification

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

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