HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 676
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HD6417641
Manufacturer Part Number
HD6417641
Description
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417641.pdf
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Section 18 Multi-Function Timer Pulse Unit (MTU)
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 DMA is activated, the flag is cleared automatically. Figure 18.68 shows the
timing for status flag clearing by the CPU, and figure 18.69 shows the timing for status flag
clearing by the DMA.
Rev. 4.00 Sep. 14, 2005 Page 626 of 982
REJ09B0023-0400
Pφ
DMA falg clear
signal
Status falg
DMA transfer
request signal
Pφ
Address
Write signal
Status flag
Interrupt
request signal
Figure 18.69 Timing for Status Flag Clearing by DMA Activation
Figure 18.68 Timing for Status Flag Clearing by the CPU
TSR write cycle
T1
TSR address
T2
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