HD6417706 RENESAS [Renesas Technology Corp], HD6417706 Datasheet - Page 366

• Manufacturer Part Number: HD6417706
• Description: Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Figure 12.3 shows the TCNT auto-reload operation.
STR0 to STR2
1. Internal Clock Operation: Set the TPSC2 to TPSC0 bits in TCR to select whether peripheral
Rev. 4.00, 03/04, page 320 of 660
H'00000000
Timer counter
Auto-reload count operation
TCNT count timing
module clock P or one of the four internal clocks created by dividing it is used (P /4, P /16,
P /64, P /256). Figure 12.4 shows the timing.
input clock
TCOR
UNF
Internal
TCNT value
TCNT
clock
P
Figure 12.4 Count Timing when Internal Clock Is Operating
N + 1
Figure 12.3 Auto-Reload Count Operation
N
TCOR value set to
TCNT during underflow
N – 1
Time