Re: TI-H: *What is the clock speed of the 89?
[Prev][Next][Index][Thread]
Re: TI-H: *What is the clock speed of the 89?
cut from http://m101.ryd.student.liu.se/J89hw.txt :
Oscillators
-----------
OSC1 speed (CPU and bus devices):
HW1: ~10MHz (the exact figures? anyone?)
HW2: ~12MHz (seems correct from 2.03 self test)
OSC2 speed (LCD, timers and link):
HW1: ~769.7kHz
(6000[int/APD]/315.3[s/APD]*79[increase/int]*2^9[cycle/increase] =
769.7k[cycle/s])
HW2: ~521.6kHz
(6000[int/APD]/465.3[s/APD]*79[increase/int]*2^9[cycle/increase] =
521.6k[cycle/s])
//Olle
Follow-Ups:
References: