upd70f3402 Renesas Electronics Corporation., upd70f3402 Datasheet - Page 370

• Manufacturer Part Number: upd70f3402
• Description: 32-/16-bit Single-chip Microcontroller With Can Interface
• Manufacturer: Renesas Electronics Corporation.

(5)
Cautions: 1. Make sure that the voltages input to ANI0 to ANI15 do not exceed the rated
(6)
(7)
370
ANI0 to ANI15 pins
These are analog input pins for the 16 channels of the A/D converter and are used to input analog
signals to be converted into digital signals. Pins other than the one selected as analog input with
the analog input channel specification register (ADSCM0
AV
This is the pin used to input the reference voltage of the A/D converter. The signals input to the
ANI0 to ANI15 pins are converted to digital signals based on the voltage applied between the
AV
AV
This is the ground pin of the A/D converter. Always make the potential at this pin the same as that
at the V
REF0
REF0
SS
pin
2. Analog input (ANI0 to ANI15) pins are alternate function pins that can also be
SS
and AV
pin
values. In particular if a voltage higher than AV
conversion value of that channel becomes undefined, and the conversion values
of the other channels may also be affected.
used as input port (P70 to P715) pins. When A/D conversion is performed by
selecting any one of ANI0 to ANI15, do not execute any input or output operation
to port 7 during conversion. It may decrease the accuracy of conversion
resolution.
pin even when the A/D converter is not used.
SS
pins.
User’s Manual U16702EE3V2UD00
Chapter 11 A/D Converter
L
) can be used as input port pins.
REF0
is input to a channel, the