Details

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BUY DS1306EN+T&R IC RTC CLK/CALENDAR SPI 20-TSSOP MAXIM 2.5K/ROLL https://www.utsource.net/itm/p/8647993.html

Parameter	Description
Part Number	DS1306EN+T&R
Function	Real-Time Clock (RTC) with Calendar and SPI Interface
Package Type	20-TSSOP (Thin Small Outline Package)
Manufacturer	Maxim Integrated
Quantity	2.5K/Roll
Operating Voltage	2.3V to 5.5V
Interface	SPI (Serial Peripheral Interface)
Temperature Range	-40掳C to +85掳C
Clock Accuracy	卤2 minutes per year at 25掳C
Features	- Automatic leap year calculation up to 2100 - Alarm function - Power fail detect and reset output - Battery backup input
Supply Current	200nA (typical) in battery backup mode

Instructions for Use:

1. Power Supply Connection: Connect VCC to the power supply voltage within the range of 2.3V to 5.5V. Ensure a stable power source to maintain accurate timekeeping.
2. SPI Interface Setup: Configure the SPI interface by connecting the appropriate pins (MOSI, MISO, SCLK, CS) to the microcontroller or host device.
3. Initialization: Upon initial setup or after a power cycle, initialize the RTC using the SPI commands to set the current date and time.
4. Alarm Configuration: Use the provided registers to set up alarm conditions if required. The alarm can be configured to trigger on specific seconds, minutes, hours, days, dates, or months.
5. Battery Backup: Connect an external battery to the VBAT pin to ensure continuous operation during main power interruptions.
6. Reading Time/Date: Read the current time and date from the RTC registers via SPI commands as needed.
7. Handling Leap Years: The DS1306EN+T&R automatically adjusts for leap years until the year 2100.

For detailed register maps and command codes, refer to the official Maxim Integrated datasheet for the DS1306EN+T&R.

(For reference only)