PIC18LF4331-ESLASHML datasheet(239/392 Pages) MICROCHIP

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 2010 Microchip Technology Inc.

DS39616D-page 239

PIC18F2331/2431/4331/4431

21.0

10-BIT HIGH-SPEED

ANALOG-TO-DIGITAL

CONVERTER (A/D) MODULE

The high-speed Analog-to-Digital (A/D) Converter

module allows conversion of an analog signal to a

corresponding 10-bit digital number.

The A/D module supports up to 5 input channels on

PIC18F2331/2431 devices, and up to 9 channels on

the PIC18F4331/4431 devices.

This high-speed 10-bit A/D module offers the following

features:

• Up to 200K samples per second

• Two sample and hold inputs for dual-channel

simultaneous sampling

• Selectable Simultaneous or Sequential Sampling

modes

• 4-word data buffer for A/D results

• Selectable data acquisition timing

• Selectable A/D event trigger

• Operation in Sleep using internal oscillator

These features lend themselves to many applications

including motor control, sensor interfacing, data

acquisition and process control. In many cases, these

features will reduce the software overhead associated

with standard A/D modules.

The module has 9 registers:

• A/D Result High Register (ADRESH)

• A/D Result Low Register (ADRESL)

• A/D Control Register 0 (ADCON0)

• A/D Control Register 1 (ADCON1)

• A/D Control Register 2 (ADCON2)

• A/D Control Register 3 (ADCON3)

• A/D Channel Select Register (ADCHS)

• Analog I/O Select Register 0 (ANSEL0)

• Analog I/O Select Register 1 (ANSEL1)

PIC18LF4331-E/ML Datasheet(PDF) 239 Page - Microchip Technology