UPD784026 Renesas Electronics Corporation., UPD784026 Datasheet - Page 505

• Manufacturer Part Number: UPD784026
• Description: 16/8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

(a) When ACKE = 1 on completion of transfer
(b) When ACKE is set after completion of transfer
(c) When ACKE = 0 on completion of transfer
(d) When ACKE = 1 interval is short
ACKE
SCK0
ACKE
SB0
SCK0
SB0
ACKE
ACKE
SCK0
SCK0
SB0
SB0
6
D2
D2
7
D1
1
D7
8
D1
CHAPTER 17 CLOCKED SERIAL INTERFACE
1
D0
2
D7
D6
D0
9
Figure 17-25 ACKE Operation
2
D6
D2
7
D1
D2
When ACKE is set in this interval and
ACKE = 1 on next fall of SCK0
7
8
D1
D0
ACK
8
9
ACK
D0
When ACKE is set and cleared in this interval
and ACKE = 0 on next fall of SCK0
When ACKE = 1 at this point
9
When ACKE = 0 at this point
ACK signal is output in 1 clock interval
immediately after ACKE is set
ACK signal is output in 9th clock cycle
ACK signal is not output
ACK signal is not output
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