3 clock output function control registers – NEC uPD78P078 User Manual
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CHAPTER 13 CLOCK OUTPUT CONTROL CIRCUIT
13.3 Clock Output Function Control Registers
The following two types of registers are used to control the clock output function.
• Timer clock select register 0 (TCL0)
• Port mode register 3 (PM3)
(1) Timer clock select register 0 (TCL0)
This register sets PCL output clock.
TCL0 is set with a 1-bit or 8-bit memory manipulation instruction.
RESET input sets TCL0 to 00H.
Remark
Besides setting PCL output clock, TCL0 sets the 16-bit timer register count clock.
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