TLV810E: Suitable reset supervisor for SSD1315

Jesse van der Zouw

Part Number: TLV810E
Other Parts Discussed in Thread: TPS3422, TLV803E

Hi all. This is the required reset waveform for an OLED controller I am using (SSD1315):

https://cursedhardware.github.io/epd-driver-ic/SSD1315.pdf (page 24)

At first glance the TLV810E seemed suitable because it has a built-in delay. However, after this delay it only goes LOW, while I need it to generate a pulse (go HIGH again).

Could I still use this chip to achieve this functionallity with some additional circuitry?

Or is another chip required? If so, which type?

over 1 year ago

0 Walter Zollinger over 1 year ago

TI__Genius 9790 points

Hello,

The day time might be too long for your application but you can try using TPS3422. If PB1 is held low for 7.5s there will be a single 400ms reset pulse.

Thanks,

Walter

0 Jesse van der Zouw over 1 year ago in reply to Walter Zollinger

Expert 1045 points

Thanks for the answer, but 7.5S is indeed too long. Im looking for something with 20 to 100ms maximum delay time to avoid an unnecessary increase in boot time.

0 Walter Zollinger over 1 year ago in reply to Jesse van der Zouw

TI__Genius 9790 points

Hi,

Sorry but we do not have another part with this functionality

Thanks,

Walter

0 Jesse van der Zouw over 1 year ago in reply to Walter Zollinger

Expert 1045 points

How about combining multiple parts? Maybe a reset delay plus a monostable multivibrator circuit? Im looking for a way to translate the single transition (e.g. HIGH to LOW) from a standard reset IC to a pulse (dual transition, goes back HIGH)

0 Walter Zollinger over 1 year ago in reply to Jesse van der Zouw

TI__Genius 9790 points

Hello Jesse,

Apologies for the delay I was out on travel. Yes it is a bit complicated but I believe a circuit like TLV810E-> inverted monostable multivibrator would work. The TLV803E would create a delayed trigger to the multivibrator.

Thanks,

Walter

Power management

Power management forum

TLV810E: Suitable reset supervisor for SSD1315