![]() Additionally, Apple has a number of patents related to authentication and security between devices. This means that Apple needs to apply some intelligence to what wire is sending and receiving the signals because there are fewer connections, but just as much data. Part of the magic going on is that the Lightning connector features fewer direct connections than the prior generation connector. This is certainly all consistent with a serial communication chip including some simple security features. There are also some large driver transistors, quite a bit of analog circuitry, and a fair amount of capacitance. Also on the chip is the EPROM, with likely 64 or 128 bits of storage (visual inspection only, full RE not completed). This block includes about 5K gates of logic. There is a digital logic block occupying the top left portion of the chip. On this sample, we have been able to see some further details of this chip. We continued our lab work on the BQ2025 and now have a lower metal sample to view (and purchase in the TechInsights store). It would also seem likely that it includes an SDQ interface. So, it is certainly likely that the BQ2025 does have some security implemented on it. All use a single wire SDQ interface (TI’s proprietary serial communications protocol). However, all four do have some common characteristics. These four chips are cataloged on TI’s website as battery fuel gauges, but they are not identical, with three of them being serial EPROMs and one of them being a battery monitor IC. However, TI does have published datasheets on the BQ2022, BQ2023, BQ2024, and BQ2026. ![]() Once we stripped away the cable housing (easier said than done), and took the die out of the package, we found die markings of “BQ2025”. Learn more about this product here.The side image shows the location of the TI chip on the lightning connector. Not ready to throw out your old Lightning charging cable? 4XEM offers a high-quality Lightning to USB-C adapter that will help you stay connected to the new USB standard. As the tech industry continues to embrace USB-C as a standard, consumers can look forward to greater ease of use and cross-device compatibility in the future. While Lightning served Apple well for many years, the move to USB-C means improved compatibility, faster data transfer speeds, and more versatile charging options for users. Third-party Lightning accessories are also available, but if they are not MFi-certified, it may not meet Apple's strict quality standards.Īpple's decision to adopt USB-C for its iPhone 15s marks a significant shift towards a more universal and versatile connection standard. Lightning: While Apple's Lightning cables and accessories are readily available, they often come with a premium price tag. ![]() This ensures that you have a wide range of options when it comes to choosing accessories or replacement cables. USB-C: USB-C cables and accessories are widely available from various manufacturers and at different price points. However, it doesn't have the universal compatibility that USB-C offers. Lightning: The Lightning connector is also reversible, so it's relatively easy to connect your Apple devices. This feature makes it more user-friendly. You can plug it in either way, saving you the hassle of trying to figure out the correct orientation. USB-C: One of the most significant advantages of USB-C is its reversible design. ![]() It's mainly designed for Apple's mobile devices and accessories. Lightning: While Apple's Lightning connector supports fast charging, it doesn't offer the same level of power delivery as USB-C. USB-C can also deliver higher power levels for charging laptops and other high-power devices. With PD, you can charge your smartphone, laptop, or other USB-C devices more quickly and efficiently. USB-C: USB-C also supports a feature called Power Delivery (PD), which allows for faster charging of devices. ![]()
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