
Rev. 1.0, 09/01, page 377 of 904
When the EXDMAC is activated, make sure, if necessary, that a low level does not remain at the
('5(4
pin from the previous end of transfer, etc.
8.6.5
Enabling Interrupt Requests when IRF = 1 in EDMDR
When transfer is started while the IRF bit is set to 1 in EDMDR, if the EDIE bit is set to 1 in
EDMDR together with the EDA bit in EDMDR, enabling interrupt requests, an interrupt will be
requested since EDIE = 1 and IRF = 1. To prevent the occurrence of an erroneous interrupt request
when transfer starts, ensure that the IRF bit is cleared to 0 before the EDIE bit is set to 1.
8.6.6
(7(1'
(7(1'
(7(1'
(7(1'
Pin and CBR Refresh Cycle
If the last EXDMAC transfer cycle and a CBR refresh cycle occur simultaneously, note that
although the CBR refresh and the last transfer cycle may be executed consecutively,
(7(1'
may
also go low in this case for the refresh cycle.
Содержание H8S/2376 F-ZTAT
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