Zilog S3F8S19 Manual do Utilizador descarregar pdf (Página 17)

UM026801-0914 Magnetic Buzzer

S3F8S19 Development Kit

User Manual

•

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

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