On the 877 the acquisition + conversion time is 40uS+20uS and so you can sample at max 16KHz. The newer version of this chip, the 16F887, has a smaller sample and hold capacitor which reduces the acquisition time to 5us. This allows conversions at 40kHz.
On the 877 the acquisition + conversion time is 40uS+20uS and so you can sample at max 16KHz. The newer version of this chip, the 16F887, has a smaller sample and hold capacitor which reduces the acquisition time to 5us. This allows conversions at 40kHz.