SPI Real-Time Clock/Calendars

Microchip offers low-cost, accurate timekeeping over a wide temperature range, power-failure monitoring, and on-chip nonvolatile memory

SPI Real-Time Clock/CalendarsMicrochip announces the expansion of its stand-alone Real-Time Clock/Calendar (RTCC) portfolio with the 10-pin, SPI MCP795XX family. These devices offer many of the same features as the larger 14-pin MCP795WXX family, including superior timekeeping performance.

Reducing overall component count in the system and eliminating the user programming costs for a serial ID makes the MCP795XX RTCC family an ideal choice for the handheld, wireless and consumer markets. By including 64 bytes of SRAM, 2 Kbits of EEPROM and a 128-bit Unique ID, which can be ordered blank or preprogrammed with a MAC address, extra memory devices may not be needed. Utility power meters, manufacturing equipment, radios, GPS and hospital instrumentation applications that need accurate time over a broad temperature range will also benefit from the very wide digital trimming range, which can compensate up to 22 seconds per day for crystal frequency drift.

Features
  • Low power operation
  • Low backup power
  • Automatic battery switchover with timestamp
  • Dual configurable alarms with a 0.01 sec count on one alarm
  • Clock out frequencies: 32.768, 8.192, and 4.096 KHz, and 1 Hz
  • Digital trimming range from -255 to + 255 ppm in 1 ppm steps
  • EEPROM has 8 bytes/page with block sector write protection
  • Factory standard MAC address programming or custom ID available

SPI Real-Time Clock-Calendars

ImageManufacturer Part NumberDescriptionAvailable Quantity
MCP79510-I/MS datasheet linkIC RTC CLK/CALENDAR SPI 10-MSOPMCP79510-I/MSIC RTC CLK/CALENDAR SPI 10-MSOP1999 - Immediate
MCP79510-I/MS product page link
MCP79511-I/MS datasheet linkIC RTC CLK/CALENDAR SPI 10-MSOPMCP79511-I/MSIC RTC CLK/CALENDAR SPI 10-MSOP1551 - Immediate
MCP79511-I/MS product page link
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-SOIC203 - Immediate
MCP795W10-I/SL product page link
MCP795W20-I/ST datasheet linkIC RTC CLK/CALENDAR SPI 14-TSSOPMCP795W20-I/STIC RTC CLK/CALENDAR SPI 14-TSSOP668 - Immediate
MCP795W20-I/ST product page link
MCP795W11-I/ST datasheet linkIC RTC CLK/CALENDAR SPI 14-TSSOPMCP795W11-I/STIC RTC CLK/CALENDAR SPI 14-TSSOP293 - Immediate
MCP795W11-I/ST product page link
MCP795W22-I/SL datasheet linkIC RTC CLK/CALENDAR SPI 14-SOICMCP795W22-I/SLIC RTC CLK/CALENDAR SPI 14-SOIC249 - Immediate
MCP795W22-I/SL product page link
MCP79520-I/MS datasheet linkIC RTC CLK/CALENDAR SPI 10-MSOPMCP79520-I/MSIC RTC CLK/CALENDAR SPI 10-MSOP487 - Immediate
MCP79520-I/MS product page link
MCP79521-I/MS datasheet linkIC RTC CLK/CALENDAR SPI 10-MSOPMCP79521-I/MSIC RTC CLK/CALENDAR SPI 10-MSOP632 - Immediate
MCP79521-I/MS product page link
MCP79522-I/MS datasheet linkIC RTC CLK/CALENDAR SPI 10-MSOPMCP79522-I/MSIC RTC CLK/CALENDAR SPI 10-MSOP503 - Immediate
MCP79522-I/MS product page link
MCP79512-I/MS datasheet linkIC RTC CLK/CALENDAR SPI 10-MSOPMCP79512-I/MSIC RTC CLK/CALENDAR SPI 10-MSOP192 - Immediate
MCP79512-I/MS 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
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
MCP795W12-I/ST datasheet linkIC RTC CLK/CALENDAR SPI 14-TSSOPMCP795W12-I/STIC RTC CLK/CALENDAR SPI 14-TSSOP40 - Immediate
MCP795W12-I/ST product page link
MCP795W12-I/SL datasheet linkIC RTC CLK/CALENDAR SPI 14-SOICMCP795W12-I/SLIC RTC CLK/CALENDAR SPI 14-SOIC16 - Immediate
MCP795W12-I/SL product page link
MCP795W20-I/SL datasheet linkIC RTC CLK/CALENDAR SPI 14-SOICMCP795W20-I/SLIC RTC CLK/CALENDAR SPI 14-SOIC8 - Immediate
MCP795W20-I/SL product page link
MCP795W21-I/ST datasheet linkIC RTC CLK/CALENDAR SPI 14-TSSOPMCP795W21-I/STIC RTC CLK/CALENDAR SPI 14-TSSOP0MCP795W21-I/ST product page link
MCP795W22-I/ST datasheet linkIC RTC CLK/CALENDAR SPI 14-TSSOPMCP795W22-I/STIC RTC CLK/CALENDAR SPI 14-TSSOP9 - Immediate
MCP795W22-I/ST product page link
Published: 2012-07-26