Description

PRODUCT Information

INTRODUCTION

DS3231 is a low-cost, high-precision 12C real-time clock (RTC) with integrated temperature compensation crystal oscillator (TCXO) and crystal. The device includes a battery input that is maintained when the main power is disconnected precise timing. Integrated crystal improves the long-term accuracy of the device and reduces the number of components in the production line number of pieces. DS3231 supplier and industrial temperature range, using 16-pin 300mil so package.

RTC saves seconds, minutes, hours, days of the week, date, month and year information. Months less than 31 days the date at the end of the month will be automatically adjusted, including corrections for leap years. Clock working format can24-hour or 12-hour format with /AM/PM indication. Provide two configurable calendars clock and a settable square wave output. Address and data are transmitted serially through the 12C bidirectional bus. Precision, temperature-compensated voltage reference and comparator circuits are used to monitor VCC status, Detects power failure, provides reset output, and automatically switches to backup power when necessary.another in addition, the RST monitor pin can be used as a manual input to generate up reset
In addition to high timing accuracy, the DS3231 also has a number of other functions, which are extended the additional functions and selection range of the system host. The device integrates a very accurate digital temperature sensor, accessible via the 12C interface (just like time). This one the accuracy of thetemperature sensor is ± 3° C. On-chip control circuit can realize automatic powerdetection and manage power switching between the main power source and thebackup power source (ie, low voltage battery). If mains power fails, the devicecontinues to provide accurate timing and temperature without sacrificing performance. When main power is restored the on-chip reset function can be used to restart thesystem when power is applied or the voltage value returns within the allowable rangemicroprocessor.

PARAMETERS

1. Size: 39mm (length)* 23mm (width)* 14mm (height)
2.Weight: 5.2g
3. Working voltage: 3.3-5.5V
4.Clock chip: High-precision clock chip DS3231
5. Clock accuracy: within 0-40 °C, accuracy is 2ppm, annual error is about 1 minute
6. With 2 calendar alarm clocks
7. Programmable square wave output
8. Real-time clock generates time in seconds, minutes, hours, days of the week, date, month and year, and provides leap year compensation valid until 2100
9. The chip comes with a temperature sensor with an accuracy of ± 3°C.
10.Storage chip:AT24C32(storage capacity 32K) 11.IIC bus interface, the maximum transmission speed is 400KHz (when the working voltage is 5V) T
12.can be cascaded with other IIC devices, 24C32 address can be modified by short
circuit AO/A1/A2, the default the address is 0x57
13. with battery CR2032, to ensure that the clock still moves normally after the system is powered off
14.Packaging: single anti-static packaging

WIRING INSTRUCTIONS
(Take Arduino un or 3 as an example)
SCL-A5
SDA-A4
VCC 5V
GND GND

SHIPPING LIST:
1.DS3231 module a (tested good antistatic packaging)

Note: don’t inclue battery.