Programmable Buzzer - Samsung S3F84B8 User Manual

S3F84B8_UM_REV 1.00
17
17.1 OVERVIEW OF PROGRAMMABLE BUZZER
The S3F84B8 microcontroller has a built-in programmable buzzer, whose operation is controlled by a single
control register, BUZCON.
17.2 FUNCTIONAL DESCRIPTION OF PROGRAMMABLE BUZZER
The buzzer's output in S3F84B8 is a square wave with wide frequency range.

0.488kHz – 125kHz @ f
17.2.1 BUZ CONTROL REGISTERS (BUZCON)
You can use the BUZ control register, BUZCON, for the following purposes:

Enable BUZ

Select input clock clock frequency

Program output frequency
BUZ clock selection bits
00 = fosc/16
01 = fosc/32
10 = fosc/64
11 = fosc/128

PROGRAMMABLE BUZZER

= 4MHz
OSC
Buzzer Control Register (BUZCON)
F7H, Set1, Bank0, R/W
MSB .7 .6 .5
BUZ enable bit
0 = Disable BUZ
1 = Enable BUZ
Figure 17-1
.4 .3 .2 .1
BUZ frequency bits
BUZ Frequency = fBUZ/[(BUZCON.4-0)+1]x 2
Buzzer Control Register (BUZCON)
17-1
17 PROGRAMMABLE BUZZER
Reset Value: 00h
.0 LSB