495
Chapter 14
A/D Converter
Preliminary User’s Manual U14913EE1V0UM00
(b) Start of conversion trigger setup timing
When starting the start of conversion by internal timer interrupt signal (TINTCCE10) an additional
setup time T
TRGAD
of 8 system clocks has to be considered.
Thus the total time of A/D conversion T
TOTAL
including the trigger setup time is as follows.
• Select mode
• Scan mode
Example:
Provided that
f
CPU
=
16
MHz
T
SMPAD
= 2 (T
STAGE
/ 10 / f
CPU
)
N =
8
Scan mode is selected
The total A/D conversion time becomes
T
TRGAD
8 f
CPU
⁄
=
T
TOTAL
T
TRGAD
T
CONV
+
=
T
TOTAL
N
CHANNEL
T
TRGAD
T
CONV
+
(
)
×
=
N
CHANNEL
Number of channels to scan
=
T
TOTAL
N
CHANNEL
T
TRGAD
T
CONV
+
(
)
⋅
8
0.5
µ
s
5.25
µ
s
+
(
)
⋅
46
µ
s
=
=
=
Summary of Contents for V850E/CA1 ATOMIC
Page 6: ...6 Preliminary User s Manual U14913EE1V0UM00 MEMO ...
Page 52: ...52 Preliminary User s Manual U14913EE1V0UM00 MEMO ...
Page 144: ...144 Preliminary User s Manual U14913EE1V0UM00 MEMO ...
Page 162: ...162 Preliminary User s Manual U14913EE1V0UM00 MEMO ...
Page 224: ...224 Preliminary User s Manual U14913EE1V0UM00 MEMO ...
Page 308: ...308 Preliminary User s Manual U14913EE1V0UM00 MEMO ...
Page 512: ...512 Preliminary User s Manual U14913EE1V0UM00 MEMO ...
Page 564: ...564 Preliminary User s Manual U14913EE1V0UM00 MEMO ...
Page 566: ...566 Preliminary User s Manual U14913EE1V0UM00 MEMO ...
Page 584: ...584 Preliminary User s Manual U14913EE1V0UM00 MEMO ...