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3 dsPIC33A API Reference
The dsPIC33A device family comes with enhanced features and peripherals. They provide a portable API interface to the functionalities of the peripherals.
An overview and detailed documentation of the drivers can be found in the MCC Melody Drivers.
3.25 UREF Driver

1 Introduction API Ref for dsPIC33 MCUs
Lists the Libraries and Drivers supported for dsPIC33 family in MCC Melody.
2 dsPIC33C API Reference
dsPIC33C API Reference provide a portable functional interface to the functionalities of the peripheral.
An overview and detailed documentation of the drivers can be found in the MCC Melody Drivers.
3 dsPIC33A API Reference
The dsPIC33A device family comes with enhanced features and peripherals. They provide a portable API interface to the functionalities of the peripherals.
An overview and detailed documentation of the drivers can be found in the MCC Melody Drivers.
- 3.1 ADC Driver
- 3.2 CBG Driver
- 3.3 CMP DAC Driver
- 3.4 CLC Driver
- 3.5 CRC Driver
- 3.6 DMA Driver
- 3.7 Event Output Driver
- 3.8 External Interrupt Driver
- 3.9 Flash Driver
- 3.10 I2C Client Driver
- 3.11 I2C Host Driver
- 3.12 Input Capture Driver
- 3.13 OPA Driver
- 3.14 Pulse Output Driver
- 3.15 PTG Driver
- 3.16 PWM Driver
- 3.17 PWM HS Driver
- 3.18 QEI Driver
- 3.19 SENT RX Driver
- 3.20 SENT TX Driver
- 3.21 SPI Client Driver
- 3.22 SPI Host Driver
- 3.23 Timer Driver
- 3.24 UART Driver
- 3.25 UREF Driver
  - 3.25.1 UREF-Driver
- 3.26 System Drivers
  Provides system level core functionality, like Clock, Interrupt, Pins. Some of these can be device dependent.
4 dsPIC33CH Dual Core User Guide
This user’s guide provides an overview of the dsPIC33CH family device architecture, process involved in configuring Main and Secondary project using MPLAB® Code Configurator (MCC) Melody.
Microchip Information

3.25 UREF Driver

Overview

The UREF feature serves to supply a voltage reference essential for various applications, such as biasing op-amps and touch guarding.

UREF supplies a reference voltage to internal nodes and via a dedicated external pin.
UREF is configured as a unity-gain non-inverting buffer. The feedback loop connects the amplifier output directly to the inverting input.
The amplifier's non-inverting input can be linked to multiple signals like VDD, AVDD, DACx, as specified in the datasheet.