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Figure 7-12: Accelerometer g-Select2 Jumper settings (J14)
7.5.3
7.5.4
7.6
J15 - Accelerometer Sleep Mode Select Jumper SLEEP (J15)
Enables the 3-axis accelerometer. This is the default setting.
Puts the 3-axis accelerometer into sleep mode. The user may control
PTC4 in firmware to enable or disable the accelerometer. In this
configuration, the user needs to pay close attention to LED PTC4 and
RSTO configuration.
Figure 7-13: Accelerometer Sleep Mode Jumper settings (J15)
J16 - Accelerometer 3-axis Signals Connection Jumper ACC_EN
The accelerometer output signals are jumper settable to PTA7, PTA6,
PTC7, and PTA1. PTA6 and PTC7 share the same Y-axis signal. By
default, the Y-axis signal is connected to PTA6.
Figure 7-14: Accelerometer Signal Output ACC_EN (J16)
Buzzer
The DEMO9S08QB8 integrates a Piezo Transducer whose resonant
frequency is 4.0KHz. Jumper J19 connects to PTB5 to control this buzzer.
DEMO9S08QB8 User Manual
31
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