NEC Renesas V850/SC1 User Manual page 461

ADPS FR2 FR1
0 0 0
0 0 0
0 0 1
0 0 1
0 1 0
0 1 0
0 1 1
0 1 1
1 0 0
1 0 0
1 0 1
1 0 1
1 1 0
1 1 0
1 1 1
1 1 1
EGA1 EGA0
0 0
0 1
1 0
1 1
ADPS
0 Comparator ON
1 Comparator OFF
Notes 1. Conversion time (actual A/D conversion time).
Always set the time to 5 µ s ≤ Conversion time ≤ 10 µ s.
2. Stabilization time (setup time of A/D converter)
Each A/D conversion requires "conversion time + stabilization time". There is no stabilization time
when ADPS = 0.
Cautions 1. The A/D converter cannot be used when the operation frequency is 2.4 to 3.6 MHz.
2. Cut the current consumption by setting the ADPS bit to 1 when the ADCS bit is set to 0.
CHAPTER 12 A/D CONVERTER
FR0
Note 1
Conversion time
Note 2
+ stabilization time
0 168/f
XX
1 120/f
XX
0 84/f
XX
1 60/f
XX
0 48/f
XX
1 36/f
XX
0 Setting prohibited
1 12/f
XX
0 168/f + 64/f
XX XX
1 120/f + 60/f
XX XX
0 84/f + 42/f
XX XX
1 60/f + 30/f
XX XX
0 48/f + 24/f
XX XX
1 36/f + 18/f
XX XX
0 Setting prohibited
1 12/f + 6/f
XX XX
Valid edge specification for external trigger signal
No edge detection
Detected at falling edge
Detected at rising edge
Detected at both rising and falling edges
Comparator control while A/D conversion is stopped (ADCS = 0)
User's Manual U15109EJ3V0UD
Selection of conversion time
f
XX
20 MHz 18.87 MHz
8.4 µ s 8.9 µ s
6.0 µ s 6.4 µ s
Setting prohibited Setting prohibited 5.25 µ s
Setting prohibited Setting prohibited Setting prohibited
Setting prohibited Setting prohibited Setting prohibited
Setting prohibited Setting prohibited Setting prohibited
Setting prohibited Setting prohibited Setting prohibited
Setting prohibited Setting prohibited Setting prohibited
8.4 + 3.2 µ s 8.9 + 3.4 µ s
6.0 + 3.0 µ s 6.4 + 3.2 µ s
Setting prohibited Setting prohibited 5.25 + 2.63 µ s
Setting prohibited Setting prohibited Setting prohibited
Setting prohibited Setting prohibited Setting prohibited
Setting prohibited Setting prohibited Setting prohibited
Setting prohibited Setting prohibited Setting prohibited
Setting prohibited Setting prohibited Setting prohibited
(2/2)
16 MHz
Setting prohibited
7.5 µ s
Setting prohibited
7.5 + 3.75 µ s
459