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Add-on Board: MMC/SD Interface (SPI) and Real-Time Clock (I2C) US$49.00

MMC-RTC-1
Add-on Board: MMC/SD Interface (SPI) and Real-Time Clock (I2C)

Note: The picture shows a MultiMediaCard installed for illustration purposes only. The MMC card is not included.

The MMC-RTC-1 board is designed specifically for storage/data logger applications. A MultiMediaCard (MMC) with high capacities such as 1 Gigabyte can be installed on the built-in MMC socket. It accepts standard MMC/SD or SDHC cards. The MMC-RTC-1 board also includes a DS1307 low-power, battery-backed Clock/Calendar. The board requires a 5V supply; it converts to 3.3V for the MMC/SD. It uses an I2C interface to RTC and a SPI interface to MMC/SD.

The control/data lines and the power supply connections are available on a 20-pin (210) expansion connector for interfacing to existing microcontroller systems. This board can be connected either as a piggyback daughterboard on a microcontroller board (one with a matching connector) using standoffs or can be placed away from the microcontroller board using a 20-wire ribbon cable.

The expansion connector is plug-in compatible with MicroTRAK, MINI-MAX and BSCB systems. You can use it in your own system too, of course; see the manual for the expansion connector's pinout.

  • MMC-RTC-1 Technical Manual
  • MMC-RTC-1 Port Mapping

  • This product was added to our catalog on Friday 14 November, 2008.

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