MCP795Wxx Real-Time Clock/Calendars

Microchip's expansion of feature rich, low cost, timekeeping solutions

Microchip Technology's MCP795Wxx Real-Time Clock/CalendarsMicrochip's real-time clocks are highly integrated with non-volatile memory and cost effective features for real life applications. This includes a battery switchover with timestamp to maintain timekeeping in order to log the time and duration of any power failure. When higher accuracy is necessary, digital trimming compensates for crystal frequencies that drift over temperature.

The MCP795Wxx series are accurate real-time clock devices that use an external 32.768 KHz crystal as a timing source. Most RTCCs use a crystal for timing with the understanding that all crystals drift in frequency over temperature.

Features
  • Three types of user memory:
    • SRAM: 64 bytes
    • EEPROM: 1 and 2 Kbits
    • Unique ID: 128 bits
  • Alarms: Counts down to 0.01 seconds
  • Watchdog timer:
    • Dual retriggers using SPI bus or GPIO
    • From 15 msec to 64 sec
  • Digital trimming: Adjustment range of approximately 22 seconds/day
  • Event detect inputs:
    • High speed - programmable count
    • Low speed - programmable debounce
  • Boot clock (boot devices only): 32 KHz clock output at powerup
  • Operating speed: 10 MHz @ 4.5 V

MCP795W1x Series

ImageManufacturer Part NumberDescriptionAvailable Quantity
MCP795W10-I/ST datasheet linkIC RTC CLK/CALENDAR SPI 14-TSSOPMCP795W10-I/STIC RTC CLK/CALENDAR SPI 14-TSSOP141 - Immediate
MCP795W10-I/ST product page link
MCP795W10-I/SL datasheet linkIC RTC CLK/CALENDAR SPI 14-SOICMCP795W10-I/SLIC RTC CLK/CALENDAR SPI 14-SOIC205 - Immediate
MCP795W10-I/SL product page link
MCP795W11-I/ST datasheet linkIC RTC CLK/CALENDAR SPI 14-TSSOPMCP795W11-I/STIC RTC CLK/CALENDAR SPI 14-TSSOP303 - Immediate
MCP795W11-I/ST product page link
MCP795W11-I/SL datasheet linkIC RTC CLK/CALENDAR SPI 14-SOICMCP795W11-I/SLIC RTC CLK/CALENDAR SPI 14-SOIC39 - Immediate
MCP795W11-I/SL product page link
MCP795W10T-I/SL datasheet linkIC RTC CLK/CALENDAR SPI 14-SOICMCP795W10T-I/SLIC RTC CLK/CALENDAR SPI 14-SOIC0MCP795W10T-I/SL product page link
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MCP795W2x Series

ImageManufacturer Part NumberDescriptionAvailable Quantity
MCP795W20-I/ST datasheet linkIC RTC CLK/CALENDAR SPI 14-TSSOPMCP795W20-I/STIC RTC CLK/CALENDAR SPI 14-TSSOP968 - Immediate
MCP795W20-I/ST product page link
MCP795W21-I/SL datasheet linkIC RTC CLK/CALENDAR SPI 14-SOICMCP795W21-I/SLIC RTC CLK/CALENDAR SPI 14-SOIC57 - Immediate
MCP795W21-I/SL product page link
MCP795W20-I/SL datasheet linkIC RTC CLK/CALENDAR SPI 14-SOICMCP795W20-I/SLIC RTC CLK/CALENDAR SPI 14-SOIC53 - Immediate
MCP795W20-I/SL product page link
MCP795W20T-I/SL datasheet linkIC RTC CLK/CALENDAR SPI 14-SOICMCP795W20T-I/SLIC RTC CLK/CALENDAR SPI 14-SOIC0MCP795W20T-I/SL product page link
MCP795W20T-I/ST datasheet linkIC RTC CLK/CALENDAR SPI 14-TSSOPMCP795W20T-I/STIC RTC CLK/CALENDAR SPI 14-TSSOP0MCP795W20T-I/ST product page link
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Demo Boards

ImageManufacturer Part NumberDescriptionAvailable Quantity
DM183032 datasheet linkBOARD EXPLORER PICDEM PIC18DM183032BOARD EXPLORER PICDEM PIC1849 - Immediate
DM183032 product page link
DM240001 datasheet linkBOARD DEMO PIC24/DSPIC33/PIC32DM240001BOARD DEMO PIC24/DSPIC33/PIC3230 - Immediate
DM240001 product page link
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Published: 2013-01-14