Datasheet

54.4 Signal Description
Table 54-1. ACC Signal Description
Pin Name Description Type
AFE0_AD[5:0] External analog data inputs Input
AFE1_AD[1:0]
TS On-chip temperature sensor Input
VREFP AFE and DAC voltage reference Input
DAC0, DAC1 On-chip DAC outputs Input
54.5 Product Dependencies
54.5.1 I/O Lines
The analog input pins are multiplexed with digital functions (PIO) on the IO line. By writing the SELMINUS and
SELPLUS fields in the ACC Mode Register (ACC_MR), the associated IO lines are set to Analog mode.
54.5.2 Power Management
The ACC is clocked through the Power Management Controller (PMC), thus the programmer must first configure the
PMC to enable the ACC clock.
Note that the voltage regulator must be activated to use the analog comparator
.
54.5.3 Interrupt Sources
The ACC has an interrupt line connected to the Interrupt Controller (IC). In order to handle interrupts, the Interrupt
Controller must be programmed before configuring the ACC.
54.5.4 Fault Output
The ACC has the FAULT output connected to the FAULT input of PWM. See Fault Mode and the implementation of
the PWM in the product.
54.6 Functional Description
54.6.1 Description
The Analog Comparator Controller (ACC) controls the analog comparator settings and performs postprocessing of
the analog comparator output.
When the analog comparator settings are modified, the output of the analog cell may be invalid. The ACC masks the
output for the invalid period.
A comparison flag is triggered by an event on the output of the analog comparator and an interrupt is generated. The
event on the analog comparator output can be selected among falling edge, rising edge or any edge.
The ACC registers are listed in the Register Summary
.
54.6.2 Analog Settings
The user can select the input hysteresis and configure two different options, characterized as follows:
•
High-speed: shortest propagation delay/highest current consumption
• Low-power: longest propagation delay/lowest current consumption
Refer to ACC Analog Control Register.
SAM E70/S70/V70/V71 Family
Analog Comparator Controller (ACC)
© 2019 Microchip T
echnology Inc.
Datasheet
DS60001527D-page 1730