Rev. 1.0, 03/01, page 116 of 280
2. When TCNTV overflows (changes from H'FF to H'00), the overflow flag (OVF) in TCRV0
will be set. The timing at this time is shown in figure 10-4. An interrupt request is sent to the
CPU when OVIE in TCRV0 is 1.
3. TCNTV is constantly compared with TCORA and TCORB. Compare match flag A or B
(CMFA or CMFB) is set to 1 when TCNTV matches TCORA or TCORB, respectively. The
compare-match signal is generated in the last state in which the values match. Figure 10-5
shows the timing. An interrupt request is generated for the CPU when CMIEA or CMIEB in
TCRV0 is 1.
4. When a compare match A or B is generated, the TMOV responds with the output value
selected by bits OS3 to OS0 in TCSRV. Figure 10-6 shows the timing when the output is
toggled by compare match A.
5. When CCLR1 or CCLR0 in TCRV0 is 01 or 10, TCNTV can be cleared by the corresponding
compare match. Figure 10-7 shows the timing.
6. When CCLR1 or CCLR0 in TCRV0 is 11, TCNTV can be cleared by the rising edge of the
input of TMRIV pin. A TMRIV input pulse-width of at least 1.5 system clocks is necessary.
Figure 10-8 shows the timing.
7. When a counter-clearing source is generated with TRGE in TCRV1 set to 1, the counting-up is
halted as soon as TCNTV is cleared. TCNTV resumes counting-up when the edge selected by
TVEG1 or TVEG0 in TCRV1 is input from the TGRV pin.
N – 1
N + 1
N
ø
Internal clock
TCNTV input
clock
TCNTV
Figure 10-2 Increment Timing with Internal Clock
Summary of Contents for H8/3670F-ZTAT HD64F3670
Page 2: ...Rev 2 0 03 01 page ii of xxiv ...
Page 4: ...Rev 2 0 03 01 page iv of xxiv ...
Page 14: ...Rev 2 0 03 01 page xiv of xxiv ...
Page 20: ...Rev 1 0 03 01 page xx of xxiv ...
Page 24: ...Rev 1 0 03 01 page xxiv of xxiv ...
Page 78: ...Rev 1 0 03 01 page 54 of 280 ...
Page 112: ...Rev 1 0 03 01 page 88 of 280 ...
Page 248: ...Rev 1 0 03 01 page 224 of 280 ...