SH7760 Datasheet, PDF (568/1345 Pages) Renesas Technology Corp – SuperHTM RISC engine

(2) Auto-Reload Count Operation
Figure 15.3 shows the TCNT auto-reload operation.
TCNT value
TCOR
TCOR value set in TCNT
on underflow
H'0000 0000
STR0–STR2
Time
UNF
Figure 15.3 TCNT Auto-Reload Operation
(3) 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 clock can be selected as the count clock by means of the TPSC2 to TPSC0 bits in
TCR.
Figure 15.4 shows the timing in this case.
Pck
Internal clock
TCNT
N+1
N
N–1
Figure 15.4 Count Timing when Operating on Internal Clock
Rev. 1.0, 02/03, page 518 of 1294