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(3823, 38D2, 38D5) Are there ways to cut MCU's current consumption using A/D conversion?

Latest Updated:08/05/2009

Question:

(A/D Converter, Power Save)
Are there any ways to reduce the MCU's current consumption when using A/D conversion? [2009/08/05]

Answer:

The following methods are available.
Please perform A/D conversion only when sampling is necessary. Also, when not performing A/D conversion, make sure to disconnect the resistor ladder from the reference voltage input pin (VREF) by setting 0 (automatic) to the VREF input switch bit.
In addition, when using wait mode or stop mode, please make sure to set as below:

  • A/D input pin: Fix the A/D input pin to High or Low externally
  • Complete an A/D conversion
    (Confirm that the A/D conversion completion bit is set to 1.)

(#107426)

Suitable Products
3823
38D2
38D5