NEC PD78058FY(A) - Manual (Page 318)

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CHAPTER 16 SERIAL INTERFACE CHANNEL 0 (
µ
PD78058F SUBSERIES)
SCK0 6
SB0 (SB1)
ACKT
7 8 9
D2 D1 D0 ACK
When set during
this period
ACK signal is output for
a period of one clock
just after setting
Figure 16-22. ACKT Operation
Caution Do not set ACKT before termination of transfer.