h8s-2646 Renesas Electronics Corporation., h8s-2646 Datasheet - Page 407

• Manufacturer Part Number: h8s-2646
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Status Flag Clearing Timing: After a status flag is read as 1 by the CPU, it is cleared by writing
0 to it. When the DTC is activated, the flag is cleared automatically. Figure 10.46 shows the
timing for status flag clearing by the CPU, and figure 10.47 shows the timing for status flag
clearing by the DTC.
Address
Status flag
Interrupt
request
signal
Address
Write signal
Status flag
Interrupt
request
signal
Figure 10.47 Timing for Status Flag Clearing by DTC Activation
Figure 10.46 Timing for Status Flag Clearing by CPU
TSR write cycle
Source address
T1
TSR address
T1
read cycle
DTC
T2
T2
Rev. 5.00 Sep 22, 2005 page 381 of 1136
Section 10 16-Bit Timer Pulse Unit (TPU)
T1
write cycle
Destination
address
DTC
T2
REJ09B0257-0500