3069RF-ZTAT Datasheet, PDF (419/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

φ
8TCNT
TCORB
Input capture signal
N
N
CMFB
Figure 10.15 CMFB Flag Setting Timing when Input Capture Occurs
Timing of Overflow Flag (OVF) Setting: The OVF flag in 8TCSR is set to 1 by the overflow
signal generated when 8TCNT overflows (from H'FF to H'00). Figure 10.16 shows the timing in
this case.
φ
8TCNT
Overflow signal
H'FF
H'00
OVF
Figure 10.16 Timing of OVF Setting
10.4.5 Operation with Cascaded Connection
If bits CKS2 to CKS0 are set to (100) in either 8TCR0 or 8TCR1, the 8-bit timers of channels 0
and 1 are cascaded. With this configuration, the two timers can be used as a single 16-bit timer
(16-bit timer mode), or channel 0 8-bit timer compare matches can be counted in channel 1
(compare match count mode). Similarly, if bits CKS2 to CKS0 are set to (100) in either 8TCR2
or 8TCR3, the 8-bit timers of channels 2 and 3 are cascaded. With this configuration, the two
timers can be used as a single 16-bit timer (16-bit timer mode),or channel 2 8-bit timer compare
matches can be counted in channel 3 (compare match count mode). In this case, the timer
operates as below.
Rev. 5.0, 09/04, page 397 of 978