133
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 0
User’s Manual U15798EJ2V0UD
(2) Capture/compare control register 0 (CRC0)
This register controls the operation of 16-bit timer capture/compare registers 00 and 01 (CR00, CR01).
CRC0 is set by a 1-bit or 8-bit memory manipulation instruction.
RESET input sets the value of this register to 00H.
Figure 6-3. Format of Capture/Compare Control Register 0 (CRC0)
Address: FF62H After reset: 00H R/W
Symbol
7
6
5
4
3
2
1
0
CRC0
0
0
0
0
0
CRC02
CRC01
CRC00
CRC02
CR01 operation mode selection
0
Operates as compare register
1
Operates as capture register
CRC01
CR00 capture trigger selection
0
Captures on valid edge of TI01
1
Captures on valid edge of TI00 by reverse phase
CRC00
CR00 operation mode selection
0
Operates as compare register
1
Operates as capture register
Cautions 1. Be sure to stop timer operation before setting CRC0.
2. When clear & start mode entered on a match between TM0 and CR00 is selected with 16-
bit timer mode control register 0 (TMC0), CR00 should not be specified as a capture register.
3. If both the rising and falling edges have been selected as the valid edges of TI00, capture
is not performed.
4. To surely perform the capture operation, the capture trigger requires a pulse longer than
two of the count clock cycles selected by prescaler mode register 0 (PRM0).
