h8s-2628 Renesas Electronics Corporation., h8s-2628 Datasheet - Page 280

• Manufacturer Part Number: h8s-2628
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 10 16-Bit Timer Pulse Unit (TPU)
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 10.42 shows the
timing for status flag clearing by the CPU, and figure 10.43 shows the timing for status flag
clearing by the DTC.
Rev. 3.00 Oct 04, 2005 page 240 of 598
REJ09B0155-0300
Address
Status flag
Interrupt
request
signal
Address
Write signal
Status flag
Interrupt
request
signal
Figure 10.43 Timing for Status Flag Clearing by DTC Activation
Figure 10.42 Timing for Status Flag Clearing by CPU
TSR write cycle
Source address
T
TSR address
T
read cycle
1
1
DTC
T
T
2
2
T
write cycle
Destination
1
address
DTC
T
2