Datasheet

60.2.7 Analog Reference, Analog Front-End and DAC
Signal Name Recommended Pin
Connection
Description
Analog Voltage References
VREFP 1.7V to VDDIN
LC Filter is required.
Positive reference voltage.
VREFP is a pure analog input.
VREFP is the voltage reference for the AFEC (ADC,
PGA DAC and Analog Comparator).
T
o reduce power consumption, if analog features are not
used, connect VREFP to GND.
Noise must be lower than 100 μVrms
VREFN Analog Negative Reference AFE, DAC and Analog Comparator negative reference
VREFN must be connected to GND or GNDANA.
12-bit Analog Front-End
AFEx_AD0–
AFEx_AD11
0 to VREFP AFE inputs channels
All are pulled-up inputs (100 kOhm) to VDDIO at reset.
AFEx_ADTRG Application dependent.
(Pulled-up on VREFP)
AFE external trigger input
All are pulled-up inputs (100 kOhm) to VDDIO at reset.
12-bit Digital-to-Analog Converter
DAC0–DAC1 Application dependent.
0 to VREFP
Analog output
All are pulled-up inputs (100 kOhm) to VDDIO at reset.
DATRG Application dependent. DAC external trigger input
Pulled-up input (100 kOhm) to VDDIO at reset.
60.2.8 USB Host/Device
Signal Name Recommended Pin
Connection
Description
VBG 0.9 - 1.1V
(1) (2)
Bias Voltage Reference for USB
T
o reduce the noise on the VBG pin to a minimum, implement the
layout considerations below:
- Keep the VBG path as short as possible
- Ensure a ground connection to GNDUTMI
VBG
GNDUTMI
10 pF
5K62 ± 1%
VBG can be left unconnected if USB is not used.
HSDM /
HSDP
Application dependent
(1) (2)
USB High Speed Data
Pulldown output at reset.
SAM E70/S70/V70/V71 Family
Schematic Checklist
© 2019 Microchip T
echnology Inc.
Datasheet
DS60001527D-page 1920