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H8S2245 Datasheet(PDF) 393 Page - Renesas Technology Corp

Part # H8S2245
Description  Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
PDF  818 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8S2245 Datasheet(HTML) 393 Page - Renesas Technology Corp

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Section 9 16-Bit Timer Pulse Unit (TPU)
Rev.3.00 Mar. 26, 2007 Page 351 of 772
REJ09B0355-0300
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 9.42 shows the timing for status flag clearing by
the CPU, and figure 9.43 shows the timing for status flag clearing by the DTC.
Status flag
Write signal
Address
φ
TSR address
Interrupt
request
signal
TSR write cycle
T1
T2
Figure 9.42 Timing for Status Flag Clearing by CPU
Interrupt
request
signal
Status flag
Address
φ
Source address
DTC
read cycle
T1
T2
Destination
address
T1
T2
DTC
write cycle
Figure 9.43 Timing for Status Flag Clearing by DTC Activation



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