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Description
Tanotis 2PCS RTC DS1302 Real Time Clock Module For Arduino AVR ARM PIC SMD than DS1307DS1302(without battery) 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
DS1302(without battery) 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 ofinformation, 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: (1) RST Reset (2) I / O data lines (3) 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
Real time clock with the year 2100 to calculate the seconds, minutes, hours, days, weeks, months, years, the ability, as well as the ability to leap
year adjustment
1.31 8 temporary data storage RAM
2.Serial I / O port pin makes the least number of ways
3.Wide range of operating voltage 2.0 5.5V
4.Current 2.0V, less than 300nA
5.Read / write clock or RAM data transmission when there are two single-byte transmit and multi-byte character sets transfer mode
6.8-pin DIP package or optional 8-pin SOIC package assembly according to the surface
7.simple 3-wire interface
8.Vcc = 5V and TTL-compatible
9.Optional industrial temperature range -40 to +85
10.Dual power tube for the main power and backup power supply
Parameters:
1.PCB a single panel, size: 42mm * 24mm * 12mm(max)
Net weight:10g
Package weight:20g
Color:green (as the picture shows)
2 with 4 holes, about 3.1mm in diameter
3 genuine spare battery for the celestial sphere CR2032, Voltage 3V, current is 260mAh, non-rechargeable batteries.
4 Crystal 32.768KHz, matching capacitance 6pF, size 2 * 6mm
5.DS1302 made large 8-pin DIP chip, chip, IC Block below for easy replacement and plug the chip
6 module operating voltage compatible 3.3V/5V, 5V and 3.3V microcontrollers can be connected with
7 Operating temperature: 0 --- 70
NOTE:
Wiring (to provide the program, for example, can take any IO port, the port defined in the program can be modified):
VCC → +5 V/3.3V
GND → GND
CLK → P02
DAT → P01
RST → P00
1.VCC and GND must not be reversed, or it will burn the chip
2.51 MCU P0 port requires a pull-up, if your single-chip pull-up resistor is not connected, you can port the data cable to the other
Package Included:
- 2 x RTC DS1302 Real Time Clock Module For Arduino AVR ARM PIC SMD than DS1307
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4.8 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 5
Review
Yes fit just right style is business casual just right 👍🏾👌🏽
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Reviewed in the United States on August 26, 2024
★★★★★ 5
Great price for a great shirt
Very nice men’s button down short sleeve shirt. Material is lightweight and breathable, easy to wash, and easy to iron. True to size. Well made. Goes with anything.
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Reviewed in the United States on March 17, 2025
★★★★★ 3
Nice, but nowhere near slim fit
This cotton linen short-sleeve shirt is a decent option for summer casual wear. The fabric blend of cotton and linen seems to be of good quality - breathable and lightweight for warmer weather. It has a nice soft feel without being see-through. The design is fairly standard with the short sleeves, button front, and chest pocket. The imitation rhino horn buttons are an interesting detail that adds a touch of style. However, I found the fit to be quite baggy and loose around the midsection despite being labeled as "slim fit." The shirt length was also a bit longer than I preferred. While the shirt is billed as versatile for different occasions like beach vacations or evenings out, I think they are better suited for very casual daily wear or running errands. The loose, untucked fit looks a bit sloppy for anything dressier in my opinion. On the upside, they are low maintenance in terms of washing and drying. The sizing chart was accurate enough as far as chest and shoulder measurements, but the roomy cut threw off the "slim fit" sizing for me. Overall, these aren't bad summer shirts if you prefer a looser, more relaxed fit. The material seems breathable and of decent quality for the price. But the baggy bottom half and lengthier shape weren't ideal for my taste. They get the job done for casual wear but don't quite live up to the "slim fit" promise in the product description.
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Reviewed in the United States on May 16, 2024
★★★★★ 1
Impossible to iron
I used spray, shower steam and nothing would even start to get the wrinkles out. Unless you are prepared to do some heavy ironing, don't bother with this shirt.
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Reviewed in the United States on September 10, 2024
★★★★★ 5
Linen-Cotton Casual Shirt
I live in the subtropics; breathable fabrics are important in your wardrobe. I realize synthetics have benefits, but for me natural fabrics are my preference. Linen and Cotton blend; yes please. I was looking for smart casual, something more than a t-shirt or golf-shirt but less than button-down. Something that would pair well with a nice pair of shorts and look good. And that it does.
Sizing is your question. I ordered a large because I often have difficulty fitting at the shoulder; the size chart indicates a medium would probably be better but I am OK with a little baggy casual too. In a brick-and-mortar store, I would normally try both sizes on and select the best fit. The arms and shoulder fit fine, the torso is a bit large. If I wear it to the beach unbuttoned, it looks great.
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Reviewed in the United States on May 18, 2024