NEC PD703114 User Manual page 520

V850e/ia2 32-bit single-chip microcontrollers

Table of Contents

(3) A/D voltage detection mode registers 0 and 1 (ADETM0, ADETM1)

The ADETMn registers are 16-bit registers that set the voltage detection mode. In the voltage detection

mode, the analog input pin for which voltage detection is being performed and a reference voltage value are

compared and an interrupt is set in response to the comparison result.

These registers can be read or written in 16-bit units.

When the higher 8 bits of the ADETMn register are used as the ADETMnH register, and the lower 8 bits are

used as the ADETMnL register, they can be read/written in 8-bit or 1-bit units.

Caution Do not write to an ADETMn register during an A/D conversion operation. If a write is

performed, conversion is suspended and it subsequently terminates.

Bit position

Remark n = 0, 1

CHAPTER 11 A/D CONVERTER

Specifies voltage detection mode.

0: Operates in normal mode

1: Operates in voltage detection mode

Sets voltage comparison detection.

0: Generates INTDETn interrupt if reference voltage value > analog input pin voltage.

1: Generates INTDETn interrupt if reference voltage value < analog input pin voltage.

Selects analog input pin to compare to reference voltage value set by DETCMP9 to

DETCMP0 when in voltage detection mode.

×: Don't care

Sets reference voltage value to compare with analog input pin selected by DETANI3 to

User's Manual U15195EJ5V0UD

Voltage detection analog input pin

Setting prohibited