Datasheet

78K0/Ix2 CHAPTER 7 16-BIT TIMER/EVENT COUNTER 00
R01UH0010EJ0500 Rev.5.00 254
Feb 28, 2012
(2) 16-bit timer capture/compare register 000 (CR000), 16-bit timer capture/compare register 010 (CR010)
CR000 and CR010 are 16-bit registers that are used with a capture function or comparison function selected by using
CRC00.
Change the value of CR000 while the timer is stopped (TMC003 and TMC002 = 00).
The value of CR010 can be changed during operation if the value has been set in a specific way. For details, refer to
7.5.1 Rewriting CR010 during TM00 operation.
These registers can be read or written in 16-bit units.
Reset signal generation clears these registers to 0000H.
Figure 7-3. Format of 16-Bit Timer Capture/Compare Register 000 (CR000)
CR000
FF13H FF12H
Address: FF12H, FF13H After reset: 0000H R/W
1514131211109876543210
(i) When CR000 is used as a compare register
The value set in CR000 is constantly compared with the TM00 count value, and an interrupt request signal
(INTTM000) is generated if they match. The value is held until CR000 is rewritten.
Caution CR000 does not perform the capture operation when it is set in the comparison mode, even if a
capture trigger is input to it.
(ii) When CR000 is used as a capture register
The count value of TM00 is captured to CR000 when a capture trigger is input.
As the capture trigger, an edge of a phase reverse to that of the TI000 pin or the valid edge of the TI010 pin
Note
can be selected by using CRC00 or PRM00.
Note The 78K0/IY2, 78K0/IA2, and 78K0/IB2 (32 pins) can be used as capture triggers only at the edge of the
inverted phase of the TI000 pin.