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2pcs/lot New DS1302 Real Time Clock Module with Battery CR2032 power-down travel time for arduino RTC Module
(Support bulk orders and Custom service orders ) DS1302 real time clock module DALLAS DS1302 is the company launched a trickle charge the clock chip , which contains a real-time clock / calendar and 31 bytes of static RAM, communicate via a simple serial interface with the microcontroller . Real-time clock / calendar circuit provides seconds , minutes, hours , days, weeks, months , years of information , the number of days per month and days can be automatically adjusted for leap year . Clock operation may indicate decided to use 24 or 12-hour format by AM / PM. Between the DS1302 can simply use synchronous serial microcontroller way to communicate just use three port lines : (1) RST Reset (2) I / O data lines (3) SCLK Serial Clock . Clock / RAM read / write data up to a 31 -byte or byte character set mode of communication . DS1302 low power consumption while working to keep the data and clock information power of less than 1mW DS1302 key performance indicators: Real-time clock with before 2100 can be calculated in seconds, minutes , hours, days, weeks, months , years of capacity , as well as the ability to leap year adjustment 31 8 temporary data storage RAM Serial I / O ports such a way that a minimum number of pins Wide range of operating voltage 2.0 5.5V When operating current 2.0V, less than 300nA Read / There are two ways to send single-byte and multi-byte transfer mode transmission character set data write clock or RAM 8-pin DIP or optional 8- pin SOIC surface mount package according to Simple 3-wire interface Compatible with TTL Vcc = 5V Optional industrial temperature range of -40 to +85 Dual power tube for the main power supply and backup power supply DS1302 real time clock module parameters are as follows : 1.PCB single panel size : 44mm * 23mm * 1.6mm 2 with four positioning holes , 3.1mm in diameter 3 backup battery is genuine celestial CR2032, voltage 3V, current 260mAh, non- rechargeable batteries. Theoretical data hold time is more than 10 years ! 4 Crystal 32.768KHz, Japan imported crystal, matching capacitance 6pF, size 2 * 6mm 5.DS1302 made large 8-pin DIP chips, IC chips below seat , easy to replace and swap chips 6 module operating voltage compatible 3.3V/5V, can be connected to 5V and 3.3V microcontroller 7 Working temperature :. 0 ° — 70 ° Wiring ( supplied with the program , for example, can be connected to any IO port, modify the port can be defined in the program ) : VCC → +5 V/3.3V GND → GND CLK → P02 DAT → P01 RST → P00 Note: 1.VCC and GND Do not reversed , it would burn the chip 2.51 MCU P0 port requires pull-up resistor , if your device does not have a pull-up resistor can be connected to other ports data lines Shipping list : DS1302 a real-time clock module (with DS1302 chip and spare batteries, a good functional test before shipment )
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|Shipping Method||Carrier||Tracking||Estimated Delivery||Remark|
|Economy Shipping||Singapore Post||Yes||8~20 business days||Sometimes may take more days to reach due to uncertain reason.|
|Expedited Shipping||DHL, Fedex, UPS, TNT…||Yes||3~5 business days|
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|Shipping Company||Shipping Cost||Estimated Delivery Time|
|3 - 7 days|
|3 - 7 days|
|5 - 14 days|
|Post Air Mail||Free Shipping||15 - 45 days|
|Return Policy||If the product you receive is not as described or low quality, the seller promises that you may return it before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe) and receive a full refund. The return shipping fee will be paid by you. Or, you can choose to keep the product and agree the refund amount directly with the seller.
N.B.: If the seller provides the "Longer Protection" service on this product, you may ask for refund up to 15 days after order completion.
|Seller Service||On-time DeliveryIf you do not receive your purchase within 60 days, you can ask for a full refund before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe).|
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