Microchip Technology introduced their new 10-pin, SPI MCP795XX RTCC family. The MCP795XX devices include many of the same features as the larger 14-pin MCP795WXX family, including excellent timekeeping performance. The devices in this Real-Time Clock/Calendar family are the MCP79510, MCP79511, MCP79512, MCP79520, MCP79521 and MCP79522. All six members are available in 10-pin MSOP and TDFN packages, and all six are available now for sampling. Volume production is expected to be available on October 1, 2012. Prices start at $0.78 each in 10,000-unit quantities.
The Microchip MCP795XX RTCC family reduces overall component count in the system and eliminates the user programming costs for a serial ID. The devices feature 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.
The MCP795XX RTCC family features a 5 MHz SPI bus and millisecond alarm. The high-resolution alarm output provides a greater degree of control over the duty cycle needed to support longer MCU sleep and power-down modes. This benefits wireless, portable communications, security and automotive applications where long battery life at a premium.
The new Microchip devices also include an on-chip power-fail timestamp feature, which enables the MCP795XX family to log the time and duration of power failures without an any additional circuitry.
The MCP795XX RTCC chips are ideal for the handheld, wireless and consumer markets. In addition, utility power meters, manufacturing equipment, radios, GPS and hospital instrumentation applications that need accurate time over a broad temperature range will benefit from the very wide digital trimming range, which can compensate up to 22 seconds per day for crystal frequency drift.
Digital trimming improves the timekeeping accuracy of RTCCs, and a wide digital trimming range provides designers with high accuracy over a large temperature range. Accurate timekeeping is also supported at a decreased power-consumption level, because digital trimming is maintained when the MCP795XX is operating from backup power on the VBAT input.
More info: Microchip Real-Time Clock/Calendar