221
CHAPTER 8 APPLICATIONS OF SERIAL INTERFACE
Figure 8-16. Format of Automatic Data Transfer/Reception Interval Specification Register
(
μ
PD78054, 78054Y, 78078, 78078Y, 780018, 780018Y, 780058, 780058Y, 78058F,
78058FY, 78075B, 78075BY subseries,
μ
PD78070A, 78070AY) (3/4)
ADTI7
Controls interval time of data transfer
0
Does not control interval time by ADTI
Note 1
1
Controls interval time by ADTI (ADTI0 through ADTI4)
ADTI4 ADTI3 ADTI2 ADTI1 ADTI0
Specifies interval time of data transfer (f
XX
= 2.5 MHz)
Minimum value
Note 2
Maximum value
Note 2
0
0
0
0
0
36.8
μ
s + 0.5/f
SCK
40.0
μ
s + 1.5/f
SCK
0
0
0
0
1
62.4
μ
s + 0.5/f
SCK
65.6
μ
s + 1.5/f
SCK
0
0
0
1
0
88.0
μ
s + 0.5/f
SCK
91.2
μ
s + 1.5/f
SCK
0
0
0
1
1
113.6
μ
s + 0.5/f
SCK
116.8
μ
s + 1.5/f
SCK
0
0
1
0
0
139.2
μ
s + 0.5/f
SCK
142.4
μ
s + 1.5/f
SCK
0
0
1
0
1
164.8
μ
s + 0.5/f
SCK
168.0
μ
s + 1.5/f
SCK
0
0
1
1
0
190.4
μ
s + 0.5/f
SCK
193.6
μ
s + 1.5/f
SCK
0
0
1
1
1
216.0
μ
s + 0.5/f
SCK
219.2
μ
s + 1.5/f
SCK
0
1
0
0
0
241.6
μ
s + 0.5/f
SCK
244.8
μ
s + 1.5/f
SCK
0
1
0
0
1
267.2
μ
s + 0.5/f
SCK
270.4
μ
s + 1.5/f
SCK
0
1
0
1
0
292.8
μ
s + 0.5/f
SCK
296.0
μ
s + 1.5/f
SCK
0
1
0
1
1
318.4
μ
s + 0.5/f
SCK
321.6
μ
s + 1.5/f
SCK
0
1
1
0
0
344.0
μ
s + 0.5/f
SCK
347.2
μ
s + 1.5/f
SCK
0
1
1
0
1
369.6
μ
s + 0.5/f
SCK
372.8
μ
s + 1.5/f
SCK
0
1
1
1
0
395.2
μ
s + 0.5/f
SCK
398.4
μ
s + 1.5/f
SCK
0
1
1
1
1
420.8
μ
s + 0.5/f
SCK
424.0
μ
s + 1.5/f
SCK
Notes 1.
The interval time is dependent on only the CPU processing.
2.
The interval time of data transfer includes an error margin. The minimum and maximum values of the
interval time for data transfer can be calculated by the following expressions (where n is the value set
to ADTI0 through ADTI4). However, if the minimum value calculated by the expression below is less
than 2/f
SCK
, the minimum interval time is 2/f
SCK
.
Minimum value = (n+1)
×
2
Maximum value = (n+1)
×
2
6
f
XX
28
f
XX
0.5
f
SCK
6
f
XX
36
f
XX
1.5
f
SCK
7
6
5
4
3
2
Symbol
1
0
FF6BH
ADTI0
ADTI
ADTI1
ADTI3 ADTI2
ADTI4
0
0
ADTI7
Address
At reset
R/W
00H
R/W