218
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) (1/4)
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
= 5.0 MHz)
Minimum value
Note 2
Maximum value
Note 2
0
0
0
0
0
18.4
μ
s + 0.5/f
SCK
20.0
μ
s + 1.5/f
SCK
0
0
0
0
1
31.2
μ
s + 0.5/f
SCK
32.8
μ
s + 1.5/f
SCK
0
0
0
1
0
44.0
μ
s + 0.5/f
SCK
45.6
μ
s + 1.5/f
SCK
0
0
0
1
1
56.8
μ
s + 0.5/f
SCK
58.4
μ
s + 1.5/f
SCK
0
0
1
0
0
69.6
μ
s + 0.5/f
SCK
71.2
μ
s + 1.5/f
SCK
0
0
1
0
1
82.4
μ
s + 0.5/f
SCK
84.0
μ
s + 1.5/f
SCK
0
0
1
1
0
95.2
μ
s + 0.5/f
SCK
96.8
μ
s + 1.5/f
SCK
0
0
1
1
1
108.0
μ
s + 0.5/f
SCK
109.6
μ
s + 1.5/f
SCK
0
1
0
0
0
120.8
μ
s + 0.5/f
SCK
122.4
μ
s + 1.5/f
SCK
0
1
0
0
1
133.6
μ
s + 0.5/f
SCK
135.2
μ
s + 1.5/f
SCK
0
1
0
1
0
146.4
μ
s + 0.5/f
SCK
148.0
μ
s + 1.5/f
SCK
0
1
0
1
1
159.2
μ
s + 0.5/f
SCK
160.8
μ
s + 1.5/f
SCK
0
1
1
0
0
172.0
μ
s + 0.5/f
SCK
173.6
μ
s + 1.5/f
SCK
0
1
1
0
1
184.8
μ
s + 0.5/f
SCK
186.4
μ
s + 1.5/f
SCK
0
1
1
1
0
197.6
μ
s + 0.5/f
SCK
199.2
μ
s + 1.5/f
SCK
0
1
1
1
1
210.4
μ
s + 0.5/f
SCK
212.0
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. 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)
×
+ 28
Maximum value = (n+1)
×
+ 36
2
6
f
XX
f
XX
0.5
f
SCK
2
6
f
XX
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