The folks from Microchip have announced the expansion of their stand-alone Real-Time Clock Calendar (RTCC) family with the I2C MCP7940M RTCC device.
This new device is designed for the price-competitive consumer products market, and includes 64 Bytes of SRAM as additional scratchpad memory, as well as a digital-trimming circuit that can compensate up to 11 seconds per day for crystal error.
Following the launches of Microchip’s stand-alone I2C MCP79410 and SPI MCP795WXX/BXX RTCC devices in 2010 and 2011, respectively, the MCP7940M device has a simple feature set that meets the needs of the high-volume segment of the RTCC device market.
Microchip now has stand-alone RTCC devices for the low, mid, and upper-mid ranges of this market.
The on-chip digital trimming circuit has a wide trimming range of +/-127 ppm, enabling designers to select lower-quality crystals for their designs to reduce overall system costs.
The MCP7940M devices provide accurate timekeeping at a low cost for applications in the home-appliance (e.g., microwaves, washing machines, dryers, ovens, thermostats); audio/video (e.g., radios, televisions, set-top boxes, digital recorders); and consumer-electronic markets (e.g., printers, network routers, cameras), among others.
Pricing and availability
The MCP7940M RTCC is available today in 8-pin MSOP, PDIP, SOIC, TSSOP and 2 mm x 3 mm TDFN packages. Pricing starts at $0.45 each, in 10,000-unit quantities.
Samples can be ordered today (Click Here
Volume-production quantities of the devices can be purchased today, at microchipDIRECT
For further information, contact any Microchip sales representative or authorized worldwide distributor, or visit Microchip’s Website (Click Here
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