Datasheet

78K0/Ix2 CHAPTER 7 16-BIT TIMER/EVENT COUNTER 00
R01UH0010EJ0500 Rev.5.00 263
Feb 28, 2012
(4) Prescaler mode register 00 (PRM00)
PRM00 is the register that sets the TM00 count clock and TI000 and TI010 pin input valid edges.
Rewriting PRM00 is prohibited during operation (when TMC003 and TMC002 = other than 00).
PRM00 can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation clears PRM00 to 00H.
Cautions 1. Do not apply the following setting when setting the PRM001 and PRM000 bits to 11 (to specify
the valid edge of the TI000 pin as a count clock).
 Clear & start mode entered by the TI000 pin valid edge
 Setting the TI000 pin as a capture trigger
2. If the operation of the 16-bit timer/event counter 00 is enabled when the TI000 or TI010 pin is at
high level and when the valid edge of the TI000 or TI010 pin is specified to be the rising edge or
both edges, the high level of the TI000 or TI010 pin is detected as a rising edge. Note this when
the TI000 or TI010 pin is pulled up. However, the rising edge is not detected when the timer
operation has been once stopped and then is enabled again.
3. The valid edge of TI010 and timer output (TO00) cannot be used for the P01 pin at the same time.
Select either of the functions.