AX58200 datasheet(96/180 Pages) ASIX

96 / 180 page

AX58200

EtherCAT Slave Controller SoC

Analog Comparator Controller (ACMP)

2.40.1 Overview

The chip provides two comparators. The comparator output is logic 1 when positive input is greater than

negative input; otherwise, the output is 0. Each comparator can be configured to generate an interrupt when the

comparator output value changes.

2.40.2 Features

⚫

Analog input voltage range: 0 ~ AVDD (voltage of AVDD pin)

⚫

Up to two rail-to-rail analog comparators

⚫

Supports hysteresis function

–

Supports programmable hysteresis window: 0mV, 10mV, 20mV and 30mV

⚫

Supports wake-up function

⚫

Supports programmable propagation speed and low power consumption

⚫

Selectable input sources of positive input and negative input

⚫

ACMP0 supports:

–

4 multiplexed I/O pins at positive sources:

◆

ACMP0_P0, ACMP0_P1, ACMP0_P2, or ACMP0_P3

–

4 negative sources:

◆

ACMP0_N

◆

Comparator Reference Voltage (CRV)

◆

Internal band-gap voltage (VBG)

◆

DAC0 output (DAC0_OUT)

⚫

ACMP1 supports

–

4 multiplexed I/O pins at positive sources:

◆

ACMP1_P0, ACMP1_P1, ACMP1_P2, or ACMP1_P3

–

4 negative sources:

◆

ACMP1_N

◆

Comparator Reference Voltage (CRV)

◆

Internal band-gap voltage (VBG)

◆

DAC0 output (DAC0_OUT)

⚫

Shares one ACMP interrupt vector for all comparators

⚫

Interrupts generated when compare results change (Interrupt event condition is programmable)

⚫

Supports triggers for break events and cycle-by-cycle control for EPWM

⚫

Supports window compare mode and window latch mode

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