
ML62Q1000 Series User's Manual
Chapter 15 Buzzer
FEUL62Q1000
15-12
15.3.3 Single Sound Mode
15.3.3.1 Single Sound Mode Operation
Figure 15-7 shows the buzzer output waveform of the single sound mode.
Each of black areas indicates a period of time during which the buzzer signal pulse is output.
See Section 15.3.5.1 "Buzzer Output Start and Stop Timing" for details of pulse signal timing.
Figure 15-7 Output Waveforms in Single Sound Mode (sounds like: "Beep" (for 0.125 to 0.25 seconds))
15.3.3.2 Example of Single Sound Mode Setting Procedure
Figure 15-8 shows an example of the single sound mode setting procedure.
Figure 15-8 Example of Single Sound Mode Setting Procedure
[Note]
Ÿ
The buzzer output may be started in the middle of the buzzer waveform depending on timing the
BZ0RUN bit of the BZ0CON register is set to "1". If it causes a problem, take one of the following
measures: A or B described below.
Measure A: Use the low-speed time base counter interrupt (choose T8HZ or T1HZ for signal
assignment).
Measure B: Use the LTBR register to synchronize the falling edge of the T8HZ or T1HZ signal with the
timing at which BZ0RUN is set to "1".
T8HZ
Buzzer output waveform
BZ0P and BZ0N pins
BZ0RUN
A buzzer sound is output until the falling edge of T8HZ clock is detected twice after the
BZ0RUN bit of the BZ0CON register is set to "1".
Set the single sound mode, frequency, duty ratio, and
output logical value with the BZ0MOD register
Setting start
Set ports of BZ0P and BZ0N pins (set the port to the 7
th
function. Set CMOS output mode)
Buzzer output port
setting
Buzzer mode
setting
Start buzzer output
Set the BZ0RUN bit of the BZ0CON register to "1"
End
Automatically stops after elapse of 0.125 to 0.25 seconds
with BZ0RUN reset to "0" through hardware
If setting is changed
Summary of Contents for ML62Q1000 Series
Page 17: ...Chapter 1 Overview...
Page 112: ...Chapter 2 CPU and Memory Space...
Page 154: ...Chapter 3 Reset Function...
Page 166: ...Chapter 4 Power Management...
Page 196: ...Chapter 5 Interrupts...
Page 248: ...Chapter 6 Clock generation Circuit...
Page 274: ...Chapter 7 Low Speed Time Base Counter...
Page 291: ...Chapter 8 16 Bit Timer...
Page 320: ...Chapter 9 Functional Timer FTM...
Page 382: ...Chapter 10 Watchdog Timer...
Page 402: ...Chapter 11 Serial Communication Unit...
Page 456: ...Chapter 12 I2 C Bus Unit...
Page 491: ...Chapter 13 I2 C Master...
Page 512: ...Chapter 14 DMA Controller...
Page 531: ...Chapter 15 Buzzer...
Page 550: ...Chapter 16 Simplified RTC...
Page 559: ...Chapter 17 GPIO...
Page 594: ...Chapter 18 External Interrupt Function...
Page 612: ...Chapter 19 CRC Generator...
Page 632: ...Chapter 20 Analog Comparator...
Page 644: ...Chapter 21 D A Converter...
Page 655: ...Chapter 22 Voltage Level Supervisor...
Page 676: ...Chapter 23 Successive Approximation Type A D Converter...
Page 709: ...Chapter 24 Regulator...
Page 714: ...Chapter 25 Flash Memory...
Page 743: ...Chapter 26 Code Option...
Page 750: ...Chapter 27 LCD Driver...
Page 788: ...Chapter 28 On Chip Debug Function...
Page 795: ...Chapter 29 Safety Function...
Page 813: ...Appendix A...
Page 881: ...Revision History...