10 pieces of DS1302 realtime clock (RTC) ICs in SOP8 package (models: DS1302ZN / DS1302Z / DS1302) — reliable, compact RTC solutions for embedded and hobbyist projects. Key benefits Keeps accurate time and calendar information even when the main power is removed, preventing data/time loss and simplifying powerfail recovery. Simple 3wire serial interface (CE, I/O, SCLK) makes integration with microcontrollers (Arduino, PIC, AVR, ARM) straightforward and minimizes required I/O. Onchip battery backup and integrated tricklecharge support let the clock and RAM remain powered from a backup cell, reducing external circuitry and design complexity. Compact SOP8 package is PCBfriendly and compatible with standard 8pin footprints for easy replacement or boardlevel mounting. Includes batterybacked RAM for storing small configuration or state data that must survive power cycles. Key attributes Functionality: Realtime clock and calendar with seconds, minutes, hours, day, date, month, year, and automatic leapyear compensation; clock registers stored in BCD format. Includes batterybacked RAM (31 x 8 bytes) for nonvolatile storage. Interface: Simple 3wire serial interface (chip enable, data I/O, serial clock) for read/write access to clock and RAM registers. Power and backup: Supports an external backup battery input and features an onchip tricklecharge function for maintaining backup power. Lowpower CMOS design suitable for battery operation. Package: SOP8 (Small Outline Package, 8 pins), compatible with standard 8pin SMD footprints and common sockets/adapters. Compatibility: Works with typical 3.3 V and 5 V microcontroller systems (wide operating voltage range typical of DS1302 family) and common embedded platforms; pinout and protocol match DS1302 datasheet references and standard community libraries. Performance: Reliable timekeeping with longterm batterybacked retention and minimal power draw in standby/backup modes. Proven, widely used RTC IC from the DS1302 family. Typical applications / use cases Microcontroller projects and DIY clocks: Add accurate, batterybacked timekeeping to Arduino, AVR, PIC or other MCU projects for alarms, timed events, or realtime displays. Data logging and time stamping: Maintain correct timestamps across power cycles for environmental loggers, sensor networks, or industrial data recorders where time continuity is required. Embedded control and appliances: Provide persistent time/calendar and a small nonvolatile RAM for settings storage in consumer devices, access controllers, HVAC systems, and other embedded products. What you get Pack of 10 DS1302ZN / DS1302Z / DS1302 RTC ICs in SOP8 package — identical parts for spare stock, production builds, or multiple prototypes. Standard DS1302 feature set and pinout for seamless use with existing DS1302based firmware and libraries. Design and integration notes Uses a simple 3wire serial protocol; many opensource libraries and examples are available for quick prototyping. Battery backup and tricklecharge features reduce external components but follow recommended datasheet guidelines for safe charging and backup configurations. SOP8 package is surfacemount; consider adapter or socketing if throughhole prototyping is required. quantity: 10 pieces of DS1302ZN / DS1302Z / DS1302 in SOP8.