User's Manual l MBa7x UM 0101 l © 2020, TQ-Systems GmbH
Page 58
4.3.6
Buzzer
TQMa7x
GPIO7_IO12
Buzzer
PCA9555
I2C
IO0_0
INT#
I2C2
PE1_INT#
BUZZER
Figure 48: Block diagram buzzer
The MBa7x provides a buzzer. The buzzer is controlled via the PCA9555 port expander.
A high level of the BUZZER signal activates the buzzer.
Figure 49: Position of buzzer – N2000
Table 68:
Type of buzzer
Manufacturer / Number
Description
PUI Audio / SMI-1324-TW-5V-2-R
Buzzer, 5 V (typ.), 30 mA (max.)