NEC 78014Y Series User Manual page 298

SCK0
SB0 (SB1)
ACKE
SCK0
SB0 (SB1)
ACKE
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SCK0
SB0 (SB1)
ACKE
SCK0
SB0 (SB1)
ACKE
298
CHAPTER 15 SERIAL INTERFACE CHANNEL 0 ( µ PD78014 Subseries)
Figure 15-24. ACKE Operations
(a) When ACKE = 1 upon completion of transfer
1 2
D7 D6
(b) When set after completion of transfer
6 7 8 9
D2 D1 D0
(c) When ACKE = 0 upon completion of transfer
1 2
D7 D6
(d) When ACKE = 1 period is short
D2 D1 D0
7 8 9
D2 D1 D0 ACK
When ACKE = 1 at this point
ACK
If set during this period and ACKE = 1
at the falling edge of the next SCK0
7 8 9
D2 D1 D0
When ACKE = 0 at this point
If set and cleared during this period
and ACKE = 0 at the falling edge of SCK0
ACK signal is output
at 9th clock
ACK signal is output
a period of one clock
immediately after setting
ACK signal is not output
ACK signal is not output