Because of the Thanksgiving holiday in the U.S., TI E2E™ design support forum responses may be delayed from November 25 through December 2. Thank you for your patience.
Part Number: BQ4802LY Tool/software: Dear TI experts,
My customer have the poduct which is using BQ4802LYPWR.
Recently they have the issue of schematic review.
1. What is the side effect of \RST pin floating?
Datasheet does not say that it is input pin…
Hello Chris,
Apologies for the long wait on this. This is an older device with limited support/knowledge on it. The exact group this product falls on is not really well defined at the moment. But I don't want to keep you waiting, so I will try to help…
Hello Dennis,
Apologies for the long wait on this. It seems the specifications are of a D-26 crystal, which seems to be readily available as a part online in sites like Digikey. Unfortunately the crystals I saw were not surface mount, but seemed to meet…
Hi Ben,
I've looked through the portfolio as well and do not see any new RTC's, this is an artifact of a TI acquisition some time ago. The screenshot shows the only offerings that may fit the requirement but it is mainly these older family of devices…
Hi Ishiwata,
The data sheet does not detail the oscillator design or operation and no additional information is available. Your sketch is typical of oscillators. X2 is marked the output and would be the square wave signal, X1 is the input. Note that the…
Part Number: BQ4802LY Hi All,
I have a question about BQ4802LY.
Can the Battery-backup mode voltage range be understood as the following range of VPFD?
Also, if SRAM is not used, is it unnecessary to connect the CEout pin?
Best Regards, Ishiwata
Part Number: BQ4802LY i'm working on a retro project that requires an older TI based real time clock chip (BQ4847YMT) as it has the need to control external SRAM.
I see that the BQ4802LY has this ability, but doe not have a built in crystal. I am…
Hi Chris,
The only other thing I can think to try is swapping the crystals instead of the ICs, to rule out some crystal impedance-related phenomenon. Maybe as a long-shot you could try using the BQ4802LY with a 5V/3.3V LDO and some level shifters (or…
