HD6417751RBP240V Datasheet, PDF (429/1226 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

12. Timer Unit (TMU)
Auto-Reload Count Operation: Figure 12.3 shows the TCNT auto-reload operation.
TCNT value
TCOR
TCOR value set in TCNT
on underflow
H'00000000
STR0–STR4
Time
UNF
Figure 12.3 TCNT Auto-Reload Operation
TCNT Count Timing:
• Operating on internal clock
Any of five count clocks (Pck/4, Pck/16, Pck/64, Pck/256, or Pck/1024) scaled from the
peripheral module clock can be selected as the count clock by means of the TPSC2–TPSC0
bits in TCR.
Figure 12.4 shows the timing in this case.
Pck
Internal clock
TCNT
N+1
N
N–1
Figure 12.4 Count Timing when Operating on Internal Clock
Rev.4.00 Oct. 10, 2008 Page 329 of 1122
REJ09B0370-0400