Zilog S3F8S19 - Manual (Page 17)

UM026801-0914 Magnetic Buzzer
S3F8S19 Development Kit
User Manual
14
• Low-voltage check to reset system
• ISP-related option selectable (ROM address 3EH) via Smart Option
• Oscillator selection, LVR selection (ROM address 3FH) via Smart Option

To learn more about the S3F8S19 MCU, refer to the S3F8S19/S3F8S15 Product Specifi-
cation (PS0312) .
Magnetic Buzzer
The CEM1206S magnetic buzzer (U2) manufactured by CUI Inc. is rated at a frequency
of 2400 Hz and an operating voltage of 3.0
– 8.0 V zero-to-peak (V
0–P
). An image of the
CEM1206S device is shown in Figure 14.
This buzzer is activated by setting the jumper J9 to the 1-2 position that connects the
buzzer to the P3.0 pin of the S3F8S19 MCU in the Development Kit.
To learn more about the CEM1206S device, visit http://www.cui.com/product/resource/
cem-1206s.pdf.
Reset Circuit
The reset circuit features a 100 KΩ pull-up resistor R6 and SW1. This circuit resets the
S3F8S19 MCU when SW1 is pressed. See Figure 15 for a representation of the reset cir-
cuit.
Figure 14. Magnetic Buzzer