h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 437

• Manufacturer Part Number: h8s-2635
• 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.
Note: * The DTC is not implemented in the H8S/2635 and H8S/2634.
φ
Address
Status flag
Interrupt
request
signal
φ
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
TSR address
T
T
read cycle
1
1
DTC
T
T
Rev. 6.00 Feb 22, 2005 page 377 of 1484
Section 10 16-Bit Timer Pulse Unit (TPU)
2
2
T
write cycle
Destination
1
address
DTC
T
2
REJ09B0103-0600