RTC DS1302 DS1307 DS3231 PCF8563 AT24C32 IIC Orologio in tempo reale per Arduino PI UK

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Venditore: jrn.media ✉️ (4.879) 99.9%, Luogo in cui si trova l'oggetto: Wembley, GB, Spedizione verso: GB e molti altri paes, Numero oggetto: 155491320233 RTC DS1302 DS1307 DS3231 PCF8563 AT24C32 IIC Orologio in tempo reale per Arduino PI UK. RTC DS1302 DS1307 DS3231 PCF8563 AT24C32 IIC Precision Real Time Clock for Arduino

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. 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. Address and data are transferred serially through an I2C bidirectional bus.

DS1302 Real time clock

DS1302 is introduced trickle charge the clock chip, containing a real-time clock / calendar and 31 bytes of static RAM, via a simple serial interface to communicate 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 leap year automatically adjust the number of days. Clock can be done by the AM / PM or 12 decided to use 24 hour format. Between the DS1302 and the microcontroller can simply use the synchronous serial communication mode, used only three port lines RST Reset, I / O data lines and SCLK serial clock. Clock / RAM read / write data to a byte or up to 31 bytes of character set way communication. DS1302 low-power work to maintain the data and clock information when power is less than 1mW

DS1302 features
  • Wide range of operating voltage 2.0 to 5.5V
  • Working current 2.0V, less than 300nA
  • Read / write clock or RAM data transmission when there are two single-byte transmit and multi-byte character sets transfer mode
  • Simple 3-wire interface compatible with TTL Vcc = 5V
  • Optional industrial temperature range -40 to +85
  • PCB for the single panel, size 44mm x 23mm x 1.6mm
  • 8-pin DIP package or optional 8-pin SOIC package assembly according to the surface
  • Serial I / O port pin makes the least number of ways

DS3231 Real time clock

The DS1307 real-time clock (RTC) IC is an 8 pin device using an I2C interface. The DS1307 is a low-power clock/calendar with 56 bytes of battery backup SRAM. The clock/calendar provides seconds, minutes, hours, day, date, month and year qualified data. The end date of each month is automatically adjusted, especially for months with less than 31 days. They are available as integrated circuits (ICs) and supervise timing like a clock and also operate date like a calendar. The main advantage of RTC is that they have an arrangement of battery back up which keeps the clock/calendar running even if there is a power failure. An exceptionally little current is required for keeping the RTC animated. We can find these RTCs in many applications like embedded systems and computer motherboards, etc. In this article, we are going to see one of the real-time clock (RTC), i.e. DS1307.

DS3231 features
  • Two-wire I2C interface.
  • Hour: Minutes: Seconds AM/PM. Day Month, Date – Year.
  • 1Hz output pin.
  • Consumes less than 500nA in battery backup mode with oscillator running
  • 56-byte non-volatile RAM for data storage
  • 56 Bytes of Non-volatile memory available to the user.
  • The DS1307 is accessed via the I2C protocol.
  • Require LIR2032 battery (not included)

DS1307 Real time clock

DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC), with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device incorporates a battery input, disconnect the main power supply and maintains accurate timekeeping. Integrated oscillator improve long-term accuracy of the device and reduces the number of components of the production line. The DS3231 is available in commercial and industrial temperature ranges, using a 16-pin 300mil SO package. 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. 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. Address and data are transferred serially through an I2C bidirectional bus. 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. In addition, / RST pin is monitored as generating μP 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. The device integrates a very precise digital temperature sensor, through the I2C * interface to access it (as the same time). This temperature sensor accuracy is ± 3 ° 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. 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.

DS1302 features
  • Operating voltage :3.3 - 5.5 V
  • Clock Accuracy :0-40 ° range, the accuracy 2ppm, the error was about 1 minute
  • Chip temperature sensor comes with an accuracy of ± 3 °
  • Memory chips: AT24C32 (storage capacity 32K)
  • IIC bus interface, the maximum transmission speed of 400KHz (working voltage of 5V)
  • Require LIR2032 battery (not included)

PCF8563 Real time clock

PCF8563 a variety of alarm function, timer function, clock output function and interrupt output function to complete a variety of complex timing services, and even for the microcontroller to provide watchdog function. It is a cost-effective clock chip, which has been widely used in the field of electric meters, water meters, gas meters, telephones, fax machines, portable instruments and battery powered instruments and meters.

PCF8563 features
  • Operating voltage :3.3 - 5 V
  • More steady and precise than DS1302 or DS1307
  • Support I2C bus (by pin, row seat docking method, which can use multiple I2C module)
  • This programmable clock output frequency: 32.768KHz, 1024Hz, 32Hz, 1Hz
  • 400KHZ read and write speed
  • Require CR1220 battery (not included)

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  • Condition: Nuovo
  • Module: DS1302
  • Brand: Unbranded

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