PIC32MX1XX Datasheet, PDF(206/320 Page) Microchip Technology – 32-bit Microcontrollers (up to 128 KB Flash and 32 KB SRAM) with Audio and Graphics Interfaces, USB, and Advanced Analog

English

English German Russian Spanish Italian Polish Chinese Japanese Korean French Portuguese	Language :

PIC32MX1XX Datasheet, PDF (206/320 Pages) Microchip Technology – 32-bit Microcontrollers (up to 128 KB Flash and 32 KB SRAM) with Audio and Graphics Interfaces, USB, and Advanced Analog

◁

PIC32MX1XX/2XX

REGISTER 21-1: AD1CON1: ADC CONTROL REGISTER 1 (CONTINUED)

bit 4

CLRASAM: Stop Conversion Sequence bit (when the first ADC interrupt is generated)

1 = Stop conversions when the first ADC interrupt is generated. Hardware clears the ASAM bit when the

ADC interrupt is generated.

0 = Normal operation, buffer contents will be overwritten by the next conversion sequence

bit 3

Unimplemented: Read as â0â

bit 2

ASAM: ADC Sample Auto-Start bit

1 = Sampling begins immediately after last conversion completes; SAMP bit is automatically set.

0 = Sampling begins when SAMP bit is set

bit 1

SAMP: ADC Sample Enable bit(2)

1 = The ADC sample and hold amplifier is sampling

0 = The ADC sample/hold amplifier is holding

When ASAM = 0, writing â1â to this bit starts sampling.

When SSRC = 000, writing â0â to this bit will end sampling and start conversion.

bit 0

DONE: Analog-to-Digital Conversion Status bit(3)

1 = Analog-to-digital conversion is done

0 = Analog-to-digital conversion is not done or has not started

Clearing this bit will not affect any operation in progress.

Note 1:

2:

3:

When using 1:1 PBCLK divisor, the userâs software should not read/write the peripheralâs SFRs in the

SYSCLK cycle immediately following the instruction that clears the moduleâs ON bit.

If ASAM = 0, software can write a â1â to start sampling. This bit is automatically set by hardware if

ASAM = 1. If SSRC = 0, software can write a â0â to end sampling and start conversion. If SSRC â â0â, this

bit is automatically cleared by hardware to end sampling and start conversion.

This bit is automatically set by hardware when analog-to-digital conversion is complete. Software can

write a â0â to clear this bit (a write of â1â is not allowed). Clearing this bit does not affect any operation

already in progress. This bit is automatically cleared by hardware at the start of a new conversion.

DS61168D-page 206

Preliminary

Â© 2011-2012 Microchip Technology Inc.

▷