Program Example For Buzzer Output - Fujitsu F2MC-8L Series Hardware Manual

9.5

Program Example for Buzzer Output

This section gives a program example for the buzzer output.
Example Program for Buzzer Output
Processing description
• Outputs a buzzer output of approximately 1.025 kHz to the BZ pin, then turns the buzzer
output "OFF".
• For a 4.2 MHz main clock source oscillation and selecting 2
oscillation), the buzzer output frequency is as follows:
Buzzer output frequency = 4.2 MHz/2
Coding example
BZCR EQU
;----------Main program----------------------------------------------------------------------------------------------------------------------------------
CSEG
:
BUZON MOV
:
:
:
BUZOFF MOV
:
ENDS
;---------------------------------------------------------------------------------------------------------------------------------------------------------------
END
000FH
BZCR,#00000001B
BZCR,#00000000B
9.5 Program Example for Buzzer Output
12
= 4.2 MHz/4096 = 1.025kHz
; Address of buzzer register
; [CODE SEGMENT]
; Buzzer output "ON"
(About 1.025 kHz at a main clock frequency of 4.2 MHz)
; Buzzer output "OFF"
12
/F (F : main clock source
CH CH
227