Renesas rl78 User Manual
RL78/G1A
CHAPTER 11 A/D CONVERTER
R01UH0305EJ0200 Rev.2.00
351
Jul 04, 2013
Cautions 1. The A/D conversion time must also be within the relevant range of conversion times (t
CONV
)
described in 29.6.1 or 30.6.1 A/D converter characteristics.
2. When rewriting the FR2 to FR0, LV1, and LV0 bits to other than the same data, while in the
conversion stopped (ADCS = 0, ADCE = 0).
3. The above conversion time does not include clock frequency errors. Select conversion time, taking
clock frequency errors into consideration.
4. When software trigger mode/hardware trigger no-wait mode, specify the conversion time so that the
following conditions are satisfied:
• f
AD
is used within a range of 1 to 16 MHz.
• When using ANI16 to ANI30, the A/D converter is used in the following range of AV
DD
, in
accordance with the settings of the LV1 and LV0 bits:
When LV1 = 0, LV0 = 0: Setting prohibit
When LV1 = 0, LV0 = 1: 2.4 V
≤ AV
DD
≤ 3.6 V
When LV1 = 1, LV0 = 0: 1.8 V
≤ AV
DD
≤ 3.6 V
When LV1 = 1, LV0 = 1: 1.6 V
≤ AV
DD
≤ 3.6 V
• Condition when temperature sensor or internal reference voltage (ADISS bit of ADS register = 1)
is set for the analog input channel:
When LV1 = 0, LV0 = 0:
Setting prohibit
When other than LV1 = 0, LV0 = 0: 2.4 V
≤ AV
DD
≤ 3.6 V
Remark f
CLK
: CPU/peripheral hardware clock frequency