Tagged Questions

1
vote
1answer
54 views

DS1077 to drive a PIC's clock

I found the DS1077, a "dual-output, programmable, fixed-frequency oscillator". I was wondering if it would be possible to let this chip provide the clock signal for the PIC(18F46K22) that operates the ...
4
votes
4answers
318 views

Why aren't 1Hz crystals used to measure seconds?

According to Wikipedia: Many clocks use a 32.768KHz crystal. Is this because the crystal is smaller than a 1Hz crystal? If 1.0 Hz == 1.0 second. Then, why the need for the division?
2
votes
4answers
86 views

What kind of oscillator should I use for a binary clock?

I've seen that a lot of clocks use a 32.768KHz crystal. I'm curious why that is exactly. I am working on a binary clock project with some 4520 ICs. I have some 555 timers too, but I want to use a ...
2
votes
1answer
62 views

Can I dynamically change the input clock frequency of the AT91SAM3X8E?

Background: I'm attempting to use an AT91SAM3X8E microcontroller (for Arduino Due compatibility) to create a USB to \$I^{2}S\$ interface. Most \$I^{2}S\$ CODECs require a master clock that is ...
3
votes
1answer
110 views

Possible to tap a PLL signal as a clock for multiple devices

We have an oscillator providing a clock signal for an MCU. It has oscillator in and out pins: XTAL-IN and XTAL-OUT. We'd like to use the same clock signal as a digital clock input to another MCU. ...
0
votes
2answers
203 views

Standalone MLCK generation for I2S

I'm looking at switching a rough hardware design from using a master-IC generated MCLK signal for I2S to using a standalone MCLK generator circuit. I'm a bit new to this area of electronics, but from ...
6
votes
2answers
632 views

Sharing an oscillator between two ICs

I have a microcontroller and an FPGA on the same board. If they're both going to run at the same clock speed, can I just use one oscillator to clock them both? There seems like there is something I ...
3
votes
4answers
2k views

Using the ATMega328 with the internal oscillator?

I have a project that I think would be best suited for an ATMega328P. However, in every simple project I've seen, people always hook up a 16MHz external oscillator. From what I can see, it should have ...
4
votes
2answers
310 views

Clock Shape Changes with Two O-Scope Probes

I have a Max V CPLD development board which has a 10MHz oscillator onboard. I hooked up CH2 probe to the output pin and then wrote a small VHDL program that output the clock to an external pin. I ...