{"product_id":"p2-rtc-add-on-board","title":"P2 RTC Add-on Board","description":"\u003ch5\u003eP2 RTC Add-on Board Overview:\u003c\/h5\u003e\n\u003cp\u003eThe P2 RTC Add-On Board provides a real time clock with calendar and alarm functionality to the Propeller 2 (P2X8C4M64P) multicore microcontroller. The small RTC board includes a rechargeable lithium battery that is kept charged while the RTC is powered and will allow the RTC to keep time while power is disconnected.\u003c\/p\u003e\n\u003cp\u003eThis add-on board is compatible with any standard single Parallax P2 accessory socket found on most P2 development boards. The connector is a standard 2x6-way 0.1” pitch socket, and the board could be used with a wide range of microcontrollers employing 3.3 V signal levels.\u003c\/p\u003e\n\u003cp\u003eThe P2 RTC Add-on extends the timekeeping capabilities of the Parallax P2 multicore microcontroller, and enables date and timestamp capabilities that are important in many projects, including data and file system management, user display, control and IoT integration.\u003c\/p\u003e\n\u003ch5\u003eP2 RTC Add-on Board Features:\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eBased on the PCF8523 CMOS Real-Time Clock (RTC) with calendar\u003c\/li\u003e\n\u003cli\u003eOptimized for low power consumption\u003c\/li\u003e\n\u003cli\u003eData is transferred serially via an I2C-bus with a data rate up to 1000 kbit\/s\u003c\/li\u003e\n\u003cli\u003eAlarm and timer functions\u003c\/li\u003e\n\u003cli\u003eEvents can generate a wake-up signal on an interrupt pin\u003c\/li\u003e\n\u003cli\u003eOffset register allows fine-tuning of the clock\u003c\/li\u003e\n\u003cli\u003eBackup battery switchover circuit detects power failures and automatically switches to the battery supply when a power interruption occurs\u003c\/li\u003e\n\u003cli\u003e2x6-pin female socket with 0.1” spacing compatible with the standard Parallax P2 single Accessory sockets\u003c\/li\u003e\n\u003cli\u003ePCBs assembled, tested, and completed in Rocklin, California\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eP2 RTC Add-on Board Specifications:\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eSupply voltage: +3.3 VDC\u003c\/li\u003e\n\u003cli\u003eControl interface: I2C bus (100, 400, 1000 kHz)\u003c\/li\u003e\n\u003cli\u003eBattery: built-in rechargeable lithium metal cell (Seiko MS421R)\u003c\/li\u003e\n\u003cli\u003eBattery nominal capacity: 1.5mAh\u003c\/li\u003e\n\u003cli\u003eBattery standard mass: 0.11g\u003c\/li\u003e\n\u003cli\u003eLow backup current: typical 150 nA\u003c\/li\u003e\n\u003cli\u003eInterface: Open-drain interrupt or clock output pins\u003c\/li\u003e\n\u003cli\u003eForm factor: dual 2x6-pin female passthrough headers with 0.1\" spacing\u003c\/li\u003e\n\u003cli\u003eMounting hole: 3.2 mm diameter\u003c\/li\u003e\n\u003cli\u003eOperating temperature: -4 to +140 °F (-20 to +60 °C)\u003c\/li\u003e\n\u003cli\u003ePCB dimensions: 0.8 x 1 in (20.32 x 25.4 mm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNOTE: Due to shipping requirements for this product's lithium metal battery, the maximum quantity per order is 4 units.\u003c\/p\u003e\n\u003ch5\u003eResource Links\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.nxp.com\/docs\/en\/data-sheet\/PCF8523.pdf\" rel=\"noopener\" target=\"_blank\"\u003eNXP PCF8523 RTC Datasheet\u003c\/a\u003e\u003c\/p\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":53397226258741,"sku":"64013","price":24.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1015\/6307\/2821\/files\/bca51a9b-64013RevAb.jpg?v=1787781841","url":"https:\/\/shop.parallax.com\/products\/p2-rtc-add-on-board","provider":"Parallax Inc","version":"1.0","type":"link"}