ML620Q503/Q504 User's Manual
Chapter 23 Melody Driver
FEUL620Q504 23-12
23.3.6 Operations of Buzzer Output
A buzzer sound is output in the following procedure.
(1) Select a buzzer mode by setting the BZMD bit of the melody 0 control register (MD0CON) to “1”.
(2) Select a buzzer output mode using the melody 0 tempo code register (MD0TMP).
(3) Select a duty of the High level width of the buzzer output waveform using the melody 0 tone length code
register (MD0LEN).
(4) Set the buzzer output frequency in the melody 0 scale code register (MD0TON).
(5) When the M0RUN bit of the melody 0 control register (MD0CON) is set to “1”, the waveform equivalent to
the buzzer sound that is set from the MD0 pin is output.
Figure 23-4 shows the output waveform of each buzzer output mode.
Figure 23-4 Output Waveform of Each Buzzer Output Mode
MD0CON.M0RUN
T8HZ
Buzzer output waveform
MD0*
(1/4) Intermittent sound 1 output waveform
MD0CON.M0RUN
T8HZ
Buzzer output waveform
MD0*
(2/4) Intermittent sound 2 output waveform
MD0CON.M0RUN
T8HZ
Buzzer output waveform
MD0*
(3/4) Single sound output waveform
T1HZ
MD0CON.M0RUN
Buzzer output waveform
MD0*
(4/4) Continuous sound output waveform
Summary of Contents for LAPIS SEMICONDUCTOR ML620Q503
Page 2: ...ML620Q503 Q504 User s Manual Issue Date Apr 16 2015 FEUL620Q504 01...
Page 18: ...Chapter 1 Overview...
Page 32: ...Chapter 2 CPU and Memory Space...
Page 44: ...Chapter 3 Reset Function...
Page 50: ...Chapter 4 Power Management...
Page 70: ...Chapter 5 Interrupts...
Page 134: ...Chapter 6 Clock Generation Circuit...
Page 161: ...Chapter 7 Time Base Counter...
Page 170: ...Chapter 8 Timers...
Page 183: ...Chapter 9 Function Timer FTM...
Page 231: ...Chapter 10 Watchdog Timer...
Page 239: ...Chapter 11 Synchronous Serial Port SSIO...
Page 251: ...Chapter 12 Synchronous Serial Port with FIFO SSIOF...
Page 283: ...Chapter 13 UART...
Page 303: ...Chapter 14 UART with FIFO UARTF...
Page 327: ...Chapter 15 I2 C Bus Interface...
Page 344: ...Chapter 16 Port XT...
Page 350: ...Chapter 17 Port 0...
Page 361: ...Chapter 18 Port 1...
Page 368: ...Chapter 19 Port2...
Page 379: ...Chapter 20 Port 3...
Page 395: ...Chapter 21 Port 4...
Page 410: ...Chapter 22 Port 5...
Page 426: ...Chapter 23 Melody Driver...
Page 439: ...Chapter 24 RC Oscillation type A D Converter RC ADC...
Page 462: ...Chapter 25 Successive Approximation Type A D Converter SA ADC...
Page 479: ...Chapter 26 Analog Comparator...
Page 489: ...Chapter 27 Flash Memory Control...
Page 505: ...Chapter 28 Voltage Level Supervisor VLS...
Page 517: ...Chapter 29 LLD circuit...
Page 519: ...Chapter 30 On Chip Debug Function...
Page 522: ...Appendixes...
Page 552: ...Revision History...