Microcontroller › 8051 › GSM SIM 300 interfacing › Hi srikanth, Crystal
June 11, 2012 at 12:31 pm
#8004
Amrith
Participant
Hi srikanth,
Crystal oscillator frequency & delay routine are much related to each other. If you are using 20Mhz you need less delay compared to 4Mhz crystal. Generally most of the compilers has in build delay functions, which calculate the delay timings as you give the crystal oscillator value you are using. Refer your controller data sheet & timing diagrams for detailed description.