Microchip Technology

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 KHz, 8.192 KHz, 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 QuantityPrice
IC RTC CLK/CALENDAR SPI 10MSOPMCP79510-I/MSIC RTC CLK/CALENDAR SPI 10MSOP5113 - Immediate$1.80View Details
IC RTC CLK/CALENDAR SPI 10MSOPMCP79511-I/MSIC RTC CLK/CALENDAR SPI 10MSOP966 - Immediate$1.94View Details
IC RTC CLK/CALENDAR SPI 10MSOPMCP79512-I/MSIC RTC CLK/CALENDAR SPI 10MSOP145 - Immediate$1.94View Details
IC RTC CLK/CALENDAR SPI 10MSOPMCP79520-I/MSIC RTC CLK/CALENDAR SPI 10MSOP0 - Immediate$1.94View Details
IC RTC CLK/CALENDAR SPI 10MSOPMCP79521-I/MSIC RTC CLK/CALENDAR SPI 10MSOP230 - Immediate$2.06View Details
IC RTC CLK/CALENDAR SPI 10MSOPMCP79522-I/MSIC RTC CLK/CALENDAR SPI 10MSOP987 - Immediate$2.06View Details
IC RTC CLK/CALENDAR SPI 14SOICMCP795W10-I/SLIC RTC CLK/CALENDAR SPI 14SOIC178 - Immediate$2.44View Details
IC RTC CLK/CALENDAR SPI 14TSSOPMCP795W10-I/STIC RTC CLK/CALENDAR SPI 14TSSOP991 - Immediate$2.52View Details
IC RTC CLK/CALENDAR SPI 14SOICMCP795W11-I/SLIC RTC CLK/CALENDAR SPI 14SOIC0 - Immediate$2.26View Details
IC RTC CLK/CALENDAR SPI 14TSSOPMCP795W11-I/STIC RTC CLK/CALENDAR SPI 14TSSOP79 - Immediate$2.63View Details
IC RTC CLK/CALENDAR SPI 14SOICMCP795W12-I/SLIC RTC CLK/CALENDAR SPI 14SOIC217 - Immediate$2.58View Details
IC RTC CLK/CALENDAR SPI 14TSSOPMCP795W12-I/STIC RTC CLK/CALENDAR SPI 14TSSOP7 - Immediate$2.63View Details
IC RTC CLK/CALENDAR SPI 14SOICMCP795W20-I/SLIC RTC CLK/CALENDAR SPI 14SOIC1059 - Immediate$2.58View Details
IC RTC CLK/CALENDAR SPI 14TSSOPMCP795W20-I/STIC RTC CLK/CALENDAR SPI 14TSSOP187 - Immediate$2.63View Details
IC RTC CLK/CALENDAR SPI 14SOICMCP795W21-I/SLIC RTC CLK/CALENDAR SPI 14SOIC98 - Immediate$2.70View Details
IC RTC CLK/CALENDAR SPI 14TSSOPMCP795W21-I/STIC RTC CLK/CALENDAR SPI 14TSSOP192 - Immediate$2.76View Details
IC RTC CLK/CALENDAR SPI 14SOICMCP795W22-I/SLIC RTC CLK/CALENDAR SPI 14SOIC64 - Immediate$2.70View Details
IC RTC CLK/CALENDAR SPI 14TSSOPMCP795W22-I/STIC RTC CLK/CALENDAR SPI 14TSSOP172 - Immediate$2.76View Details
Published: 2012-07-26

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Related Product Highlight

Real-Time Clocks/Calendars (RTCCs) Microchip’s portfolio of MCP79xx RTCCs offer low-cost system timekeeping solution that are highly integrated with a usable amount of non-volatile memory.
MCP795Wxx Real-Time Clock / Calendars Microchip's MCP795Wxx real-time clocks with watchdog timer use an external 32.768 KHz crystal as a timing source and have battery switchover with a timestamp.
Real-Time Clock/Calendar Products Real-Time Clock products for smart energy, utility metering, Ethernet, and LCD applications include basic, mid-range, and upper mid-range RTCCs and dev tools.