User Manual

Bluetooth Audio Module BTM-68D
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8.15
The RESET pin is an active low reset and is internally filtered using the internal low frequency
clock oscillator. A reset will be performed between 1.5 and 4.0ms following RESET being active. It
is recommended that RESET be applied for a period greater than 5ms.BTM-68D has an internal
reset circuitry ,when BTM-68D input 5V charging voltage, Module reset once.
The capacitor discharges through 220 k resistor, which eventually deactivates the reset.
Time constant of the RC circuitry is set in a way that the supply voltage is safely stabilized before
the reset deactivates.
Figure 2: BTM-68D reset circuitry