DS3231 AT24C32 High Precision Clock Module IIC Module Memory Module
DS3231 AT24C32 High Precision Clock Module IIC Module Memory Module
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1. Size: 38mm (length) X22mm (width) X14mm (height)
2. Weight: 8g
3. Working voltage: 3.3--5.5V
4. Clock chip: High-precision clock chip DS3231
5. Clock accuracy: Within 0-40 degree C, accuracy 2ppm, annual error about 1 minute
6. With 2 calendar alarm clocks
7. Programmable square wave output
8. Real-time clock generates seconds, minutes, hours, week, date, month and year time, and provides leap year compensation valid to 2100 years
9. The temperature sensor inside the chip has an accuracy of +/- 3 degree C
10. Memory chip: AT24C32 (storage capacity 32K)
11. IIC bus interface, high transmission speed 400KHz (when working voltage is 5V)
12. Can cascade other IIC devices, 24C32 address can be modified by short circuit A0 / A1 / A2, the default address is 0x57
13. With rechargeable battery LIR2032 to ensure that the clock still runs normally after the system is powered off
14. Packing: Single anti-static packaging
15. Wiring instructions (taking Arduino uno r3 as an example):
SCL -- A5
SDA -- A4
VCC -- 5V
GND -- GND
16. DS3231 is a low-cost, high-precision I2C real-time clock (RTC) with integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device contains a battery input, which can maintain accurate timing when the main power is disconnected. The integrated crystal oscillator improves the long-term accuracy of the device and reduces the number of components in the production line. The DS3231 offers commercial and industrial temperature ranges and is available in a 16-pin 300mil SO package.
17. RTC saves seconds, minutes, hours, day, date, month and year information. Months less than 31 days will automatically adjust the end of the month, including corrections for leap years. The working format of the clock can be 24 hours or a 12-hour format with / AM / PM indication. Provide two configurable calendar alarms and a configurable square wave output. The address and data are transferred serially via the I2C bidirectional bus.
Sophisticated, temperature-compensated voltage reference and comparator circuits are used to monitor VCC status, detect power failures, provide reset outputs, and automatically switch to backup power when necessary. In addition, the / RST monitor pin can be used as a manual input to generate a μP reset.
18. In addition to high timing accuracy, the DS3231 also has some other functions that expand the additional functions and selection range of the system host. The device integrates a very accurate digital temperature sensor, which can be accessed through the I2C * interface (just like time). The accuracy of this temperature sensor is +/- 3 degree C. The on-chip control circuit can realize automatic power supply detection and manage the power supply switching between the main power supply and the backup power supply (that is, the low-voltage battery). If the main power supply is powered down, the device can continue to provide accurate timing and temperature without affecting performance. When the main power supply is re-energized or the voltage value returns to the allowable range, the on-chip reset function can be used to restart the system microprocessor.
✓ FREE SHIPPING - No shipping fees charged
✓ International Delivery - Ships from our overseas warehouse
✓ Processing Time - 1-3 days handling time
✓ Estimated Delivery - 6-13 business days total
How It Works:
- Orders placed before 2:00 PM SAST (Monday-Friday) begin processing the same day
- Orders after 2:00 PM or on weekends/holidays process the next business day
- Delivered via private courier with SMS, email, and WhatsApp tracking updates
- If courier cannot reach you, order may be sent to nearest PAXI collection point
- Shipping insurance included in your product price
Customs & Duties Information:
Orders up to R2000:
✓ Delivered Duty Paid (DDP) - The price you see is the final price you pay
✓ We handle all import duties, taxes, and customs clearance fees
✓ No surprise charges upon delivery
Orders over R2000:
⚠️ You will be responsible for any import duties, taxes, and customs clearance fees upon delivery
Note: Your ID information may be required for customs clearance to ensure smooth delivery.
At PMC TechLife, we are committed to ensuring our customers are satisfied with their purchases. Our return policy is designed to be transparent, fair, and fully compliant with South African consumer protection laws, including the Consumer Protection Act (CPA) and the Electronic Communications and Transactions Act (ECTA).
We offer distinct return processes based on the reason for your return. Please read the following sections carefully to understand your rights and the procedures for returning an item.
1. Your Right to Return Defective or Faulty Goods (6-Month Warranty)
In accordance with the Consumer Protection Act, if any product you receive is defective, faulty, unsafe, or of poor quality, you have 6 months from the date of delivery to return it. In such cases, you are entitled to a full refund, a replacement, or a repair of the item, at your choice. We will cover all costs associated with the return shipping for defective items.
To be eligible for a defective goods return:
- The return must be logged within 6 months of delivery.
- The item should be returned with all parts and original packaging where possible. We understand that discovering a defect may require opening the packaging or breaking a seal; returns for defective items will be accepted even if opened.
- Our inspection must confirm the issue was a manufacturing defect and not caused by customer misuse, improper installation, or normal wear and tear.
2. Your Right to a 'Cooling-Off' Return (Change of Mind)
In line with the Electronic Communications and Transactions Act for online purchases, you have a 7-day 'cooling-off' period. If you change your mind or ordered incorrectly, you have 7 days from the date of delivery to request a return for a refund or exchange.
To be eligible for a 'change of mind' return:
- The item must be in its original, as-new, and resalable condition, unworn and unused.
- The item must be returned in its original packaging, with all original tags and accessories included. You may open the packaging to inspect the item, but it must be returned undamaged.
- The customer is responsible for the cost of return shipping.
- Important: There are no handling or restocking fees for change-of-mind returns. You will be refunded the full purchase price, as the law grants you the right to cancel "without penalty."
3. How to Start a Return
To initiate any return, please follow these steps:
- Visit our dedicated returns portal: pmctechlife.returnscenter.com.
- Enter your order number and the email address used for the purchase.
- Follow the prompts to select the item(s) you wish to return and the reason for the return.
Once your request is submitted, we will review it. If your return is accepted, we will send you instructions on how and where to send your package. Items sent back to us without first requesting and receiving authorisation will not be accepted.
4. Exceptions & Non-Returnable Items
Please note that for 'change of mind' reasons, we cannot accept returns on the following:
- Gift cards
- Custom-ordered or personalized items
- Items specified as non-returnable for hygiene reasons (e.g., roll-on products, clothing, and personal care goods).
This does not affect your statutory right to return any item (including sale items) that is defective or faulty within 6 months of delivery.
5. Specific Product Notes
- LCD Screens: To prevent damage during installation, we strongly recommend that our LCD screens are installed by a qualified professional technician. Damage caused by improper installation is not covered under the 6-month warranty for manufacturing defects. If you believe an LCD screen was faulty upon arrival, providing an invoice from a technician can help expedite the assessment of your return claim.
- Spare Parts: Spare parts products cannot be returned if they have been installed on a mobile phone and are found to be working after installation. This does not affect your rights if the part was defective upon arrival.
6. Exchanges
The fastest way to ensure you get what you want is to return the item you have following the process above. Once the return is accepted and processed, you can make a separate purchase for the new item.
7. Refunds
We will notify you once we’ve received and inspected your return and let you know if the refund was approved based on the policy conditions. If approved, we will issue the refund to your original payment method within 5-7 business days. Please note that it may take additional time for your bank or credit card company to process and post the refund to your account.
8. Cancellation Policy
You can request to cancel your order by emailing us at sales@pmcjewellery.co.za.
- Before Shipping: We can only guarantee cancellation if your order has not yet been shipped.
- After Shipping: Once an order has shipped, it cannot be cancelled. If you wish to return the order, you must wait to receive it and then initiate a return through our portal. Such returns will be treated as 'Change of Mind' returns.
You can always contact us for any return questions at our help center.
Description
Description
1. Size: 38mm (length) X22mm (width) X14mm (height)
2. Weight: 8g
3. Working voltage: 3.3--5.5V
4. Clock chip: High-precision clock chip DS3231
5. Clock accuracy: Within 0-40 degree C, accuracy 2ppm, annual error about 1 minute
6. With 2 calendar alarm clocks
7. Programmable square wave output
8. Real-time clock generates seconds, minutes, hours, week, date, month and year time, and provides leap year compensation valid to 2100 years
9. The temperature sensor inside the chip has an accuracy of +/- 3 degree C
10. Memory chip: AT24C32 (storage capacity 32K)
11. IIC bus interface, high transmission speed 400KHz (when working voltage is 5V)
12. Can cascade other IIC devices, 24C32 address can be modified by short circuit A0 / A1 / A2, the default address is 0x57
13. With rechargeable battery LIR2032 to ensure that the clock still runs normally after the system is powered off
14. Packing: Single anti-static packaging
15. Wiring instructions (taking Arduino uno r3 as an example):
SCL -- A5
SDA -- A4
VCC -- 5V
GND -- GND
16. DS3231 is a low-cost, high-precision I2C real-time clock (RTC) with integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device contains a battery input, which can maintain accurate timing when the main power is disconnected. The integrated crystal oscillator improves the long-term accuracy of the device and reduces the number of components in the production line. The DS3231 offers commercial and industrial temperature ranges and is available in a 16-pin 300mil SO package.
17. RTC saves seconds, minutes, hours, day, date, month and year information. Months less than 31 days will automatically adjust the end of the month, including corrections for leap years. The working format of the clock can be 24 hours or a 12-hour format with / AM / PM indication. Provide two configurable calendar alarms and a configurable square wave output. The address and data are transferred serially via the I2C bidirectional bus.
Sophisticated, temperature-compensated voltage reference and comparator circuits are used to monitor VCC status, detect power failures, provide reset outputs, and automatically switch to backup power when necessary. In addition, the / RST monitor pin can be used as a manual input to generate a μP reset.
18. In addition to high timing accuracy, the DS3231 also has some other functions that expand the additional functions and selection range of the system host. The device integrates a very accurate digital temperature sensor, which can be accessed through the I2C * interface (just like time). The accuracy of this temperature sensor is +/- 3 degree C. The on-chip control circuit can realize automatic power supply detection and manage the power supply switching between the main power supply and the backup power supply (that is, the low-voltage battery). If the main power supply is powered down, the device can continue to provide accurate timing and temperature without affecting performance. When the main power supply is re-energized or the voltage value returns to the allowable range, the on-chip reset function can be used to restart the system microprocessor.
Delivery Process
Delivery Process
✓ FREE SHIPPING - No shipping fees charged
✓ International Delivery - Ships from our overseas warehouse
✓ Processing Time - 1-3 days handling time
✓ Estimated Delivery - 6-13 business days total
How It Works:
- Orders placed before 2:00 PM SAST (Monday-Friday) begin processing the same day
- Orders after 2:00 PM or on weekends/holidays process the next business day
- Delivered via private courier with SMS, email, and WhatsApp tracking updates
- If courier cannot reach you, order may be sent to nearest PAXI collection point
- Shipping insurance included in your product price
Customs & Duties Information:
Orders up to R2000:
✓ Delivered Duty Paid (DDP) - The price you see is the final price you pay
✓ We handle all import duties, taxes, and customs clearance fees
✓ No surprise charges upon delivery
Orders over R2000:
⚠️ You will be responsible for any import duties, taxes, and customs clearance fees upon delivery
Note: Your ID information may be required for customs clearance to ensure smooth delivery.
Refunds & Returns
Refunds & Returns
At PMC TechLife, we are committed to ensuring our customers are satisfied with their purchases. Our return policy is designed to be transparent, fair, and fully compliant with South African consumer protection laws, including the Consumer Protection Act (CPA) and the Electronic Communications and Transactions Act (ECTA).
We offer distinct return processes based on the reason for your return. Please read the following sections carefully to understand your rights and the procedures for returning an item.
1. Your Right to Return Defective or Faulty Goods (6-Month Warranty)
In accordance with the Consumer Protection Act, if any product you receive is defective, faulty, unsafe, or of poor quality, you have 6 months from the date of delivery to return it. In such cases, you are entitled to a full refund, a replacement, or a repair of the item, at your choice. We will cover all costs associated with the return shipping for defective items.
To be eligible for a defective goods return:
- The return must be logged within 6 months of delivery.
- The item should be returned with all parts and original packaging where possible. We understand that discovering a defect may require opening the packaging or breaking a seal; returns for defective items will be accepted even if opened.
- Our inspection must confirm the issue was a manufacturing defect and not caused by customer misuse, improper installation, or normal wear and tear.
2. Your Right to a 'Cooling-Off' Return (Change of Mind)
In line with the Electronic Communications and Transactions Act for online purchases, you have a 7-day 'cooling-off' period. If you change your mind or ordered incorrectly, you have 7 days from the date of delivery to request a return for a refund or exchange.
To be eligible for a 'change of mind' return:
- The item must be in its original, as-new, and resalable condition, unworn and unused.
- The item must be returned in its original packaging, with all original tags and accessories included. You may open the packaging to inspect the item, but it must be returned undamaged.
- The customer is responsible for the cost of return shipping.
- Important: There are no handling or restocking fees for change-of-mind returns. You will be refunded the full purchase price, as the law grants you the right to cancel "without penalty."
3. How to Start a Return
To initiate any return, please follow these steps:
- Visit our dedicated returns portal: pmctechlife.returnscenter.com.
- Enter your order number and the email address used for the purchase.
- Follow the prompts to select the item(s) you wish to return and the reason for the return.
Once your request is submitted, we will review it. If your return is accepted, we will send you instructions on how and where to send your package. Items sent back to us without first requesting and receiving authorisation will not be accepted.
4. Exceptions & Non-Returnable Items
Please note that for 'change of mind' reasons, we cannot accept returns on the following:
- Gift cards
- Custom-ordered or personalized items
- Items specified as non-returnable for hygiene reasons (e.g., roll-on products, clothing, and personal care goods).
This does not affect your statutory right to return any item (including sale items) that is defective or faulty within 6 months of delivery.
5. Specific Product Notes
- LCD Screens: To prevent damage during installation, we strongly recommend that our LCD screens are installed by a qualified professional technician. Damage caused by improper installation is not covered under the 6-month warranty for manufacturing defects. If you believe an LCD screen was faulty upon arrival, providing an invoice from a technician can help expedite the assessment of your return claim.
- Spare Parts: Spare parts products cannot be returned if they have been installed on a mobile phone and are found to be working after installation. This does not affect your rights if the part was defective upon arrival.
6. Exchanges
The fastest way to ensure you get what you want is to return the item you have following the process above. Once the return is accepted and processed, you can make a separate purchase for the new item.
7. Refunds
We will notify you once we’ve received and inspected your return and let you know if the refund was approved based on the policy conditions. If approved, we will issue the refund to your original payment method within 5-7 business days. Please note that it may take additional time for your bank or credit card company to process and post the refund to your account.
8. Cancellation Policy
You can request to cancel your order by emailing us at sales@pmcjewellery.co.za.
- Before Shipping: We can only guarantee cancellation if your order has not yet been shipped.
- After Shipping: Once an order has shipped, it cannot be cancelled. If you wish to return the order, you must wait to receive it and then initiate a return through our portal. Such returns will be treated as 'Change of Mind' returns.
You can always contact us for any return questions at our help center.
