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HD6417705F133V Datasheet, PDF (367/741 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7700 Series | |||
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Auto-Reload Count Operation: Figure 12.3 shows the TCNT auto-reload operation.
TCNT value
TCOR
TCOR value set to
TCNT during underflow
H'00000000
STR0âSTR2
UNF
Time
Figure 12.3 Auto-Reload Count Operation
TCNT Count Timing:
1. Internal Clock Operation: Set the TPSC2 to TPSC0 bits in TCR to select whether one of the
four internal clocks created by dividing the peripheral module clock is used (PÏ/4, PÏ/16,
PÏ/64, PÏ/256). Figure 12.4 shows the timing.
PÏ
Internal
clock
Timer counter
input clock
TCNT N + 1
N
Nâ1
Figure 12.4 Count Timing when Internal Clock Is Operating
Rev. 2.00, 09/03, page 319 of 690
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