1. Working voltage: 2.0V~5.5V.
  2. In standby mode, the quiescent current is less than 5uA.
  3. Accurate +/-1% internal oscillation with low voltage reset (LVR=1.8V) watchdog timing and I/O reset functions.
  4. PWM pure audio output can directly drive 8Ω 0.5W horn and buzzer.
  5. Built-in watchdog.
  6. Have serial port control mode: one-line serial port and two-line serial port (up to 224 segments of voice can be loaded).
  7. Support the BUSY state output function.

Data Sheet


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