HD6417618 RENESAS [Renesas Technology Corp], HD6417618 Datasheet - Page 355

• Manufacturer Part Number: HD6417618
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

13.5.3
Even when the count-up occurs in the T2 cycle while writing to CMCNT in bytes, the byte-writing
has priority over the count-up. In this case, the count-up is not performed. The byte data on
another side, which is not written to, is also not counted and the previous contents remain.
Figure 13.7 shows the timing when the count-up occurs in the T2 cycle while writing to CMCNT
in bytes.
13.5.4
Writing the same value to CMCNT with the counting stopped and CMCOR is prohibited. If
written, the CMF flag in CMCSR is set to 1 and CMCNT is cleared to H'0000.
Figure 13.7 Conflict between Byte-Write and Count-Up Processes of CMCNT
Conflict between Byte-Write and Count-Up Processes of CMCNT
Conflict between Write Processes to CMCNT with the Counting Stopped and
CMCOR
Peripheral operating
CMCNT count-up
Internal write
clock (Pφ)
CMCNTH
CMCNTL
Address
enable
CMCSR write cycle
N
X
T1
CMCNTH
T2
Rev. 6.00 Jun. 12, 2007 Page 323 of 610
Section 13 Compare Match Timer (CMT)
M
X
REJ09B0131-0600