262
CHAPTER 13 BUZZER OUTPUT CONTROL CIRCUIT
13.3 Buzzer Output Function Control Registers
The following two types of registers are used to control the buzzer output function.
• Timer clock select register 2 (TCL2)
• Port mode register 3 (PM3)
(1) Timer clock select register 2 (TCL2)
This register sets the buzzer output frequency.
TCL2 is set with an 8-bit memory manipulation instruction.
RESET input sets TCL2 to 00H.
Remark Besides setting the buzzer output frequency, TCL2 sets the watch timer count clock and the
watchdog timer count clock.
To Next Page
Loading...
