DS3231 AT24C32 IIC Precision Real Time Clock RTC Memory Module For Arduino USA

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Free USPS First Class Shipping. May receive as quickly as in 3 days!<br>Featured Item<br>DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC), with an integrated temperature-compensated crystal oscillator (TCXO) and crystal.<br>The device incorporates a battery input, disconnect the main power supply and maintains accurate timekeeping.<br>Integrated oscillator improve long-term accuracy of the device and reduces the number of components of the production line.<br>The DS3231 is available in commercial and industrial temperature ranges, using a 16-pin 300mil SO package.<br>RTC maintains seconds, minutes, hours, day, date, month, and year information. Less than 31 days of the month, the end date will be automatically adjusted, including corrections for leap year.<br>The clock operates in either the 24 hours or band / AM / PM indication of the 12-hour format. Provides two configurable alarm clock and a calendar can be set to a square wave output.<br>Address and data are transferred serially through an I2C bidirectional bus.<br>A precision temperature-compensated voltage reference and comparator circuit monitors the status of VCC to detect power failures, provide a reset output, and if necessary, automatically switch to the backup power supply.<br>In addition, / RST pin is monitored as generating uP reset manually.         Save time and high precision addition, DS3231 also has some other features that extend the system host of additional features and a range of options.<br>The device integrates a very precise digital temperature sensor, through the I2C * interface to access it (as the same time).<br>This temperature sensor accuracy is +- 3 degrees C. On-chip power supply control circuit can automatically detect and manage the main and standby power (i.e., low-voltage battery) to switch between the power supply.<br>If the main power failure, the device can continue to provide accurate timing and temperature, performance is not affected. When the main power re-power or voltage value returns to within the allowable range, the on-chip reset function can be used to restart the system microprocessor.<br>Specification<br>-  Size: 38mm (length) * 22mm (W) * 14mm (height)<br>- Weight: 8g<br>- Operating voltage :3.3 - 5 .5 V<br>- Clock chipset : high-precision clock chip DS3231<br>- Clock Accuracy :0-40 Deg. Cel. range, the accuracy 2ppm, the error was about 1 minute<br>- Calendar alarm clock with two<br>- Programmable square-wave output<br>- Memory chips: AT24C32 (storage capacity 32K)<br>- IIC bus interface, the maximum transmission speed of 400KHz (working voltage of 5V)<br>- Can be cascaded with other IIC device<br>- 24C32 addresses can be shorted A0/A1/A2 modify default address is 0x57<br>- Packing: single anti-static packaging<br>Wiring instructions (with Arduino uno r3 for example)<br>- SCL -> A5<br>- SDA -> A4<br>- VCC -> 5V<br>- GND -> GND<br>Included in this package<br>- 1X PCS Arduino RTC<br>Shipping & Payment<br>Payment<br>-<br>We require<br>Paypal<br>payment only.<br>- Your order will be cancelled if the payment is not received in one week.<br>We offer USPS First Class Shipping /<br>Not Ecomomy<br>- There is a big difference between USPS First Class Shipping and Economy Shipping<br>- Ecomomic delivery could take upto 5 days even to reach the seller's local post office<br>- Economy are collected in bulk by a third courier and shipped to post office to receive a discount<br>- Our orders are shipped daily and sent to USPS post office directly<br>- Please place an order with us. You will be pleasantly surprised by our service<br>Shipping<br>- Delivery area: We are only shipping within 48 continental United States.<br>-<br>Delivery method: USPS Priority & USPS First Class. Choose Priority for fast delivery.<br>- Handling time: 1 business day after receiving payment. If USPS is open, we are open too.<br>- All our items are shipped with the tracking number.<br>- Buyers are responsible to provide us with the correct address. Please confirm your address.<br>Handling And Return<br>- We accept return within 14 days after delivery.<br>- Defective items will be exchanged or