PIC32MX440F256H-80I Datasheet, PDF (497/646 Pages) Microchip Technology – 64/100-Pin General Purpose and USB 32-Bit Flash Microcontrollers

PIC32MX3XX/4XX
REGISTER 22-1: AD1CON1: ADC CONTROL REGISTER 1 (CONTINUED)
bit 4
CLRASAM: Stop Conversion Sequence bit (when the first A/D converter 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
Reserved: Write ‘0’; ignore read
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
1 = The ADC SHA is sampling
0 = The ADC sample/hold amplifier is holding
When ASAM = 0, writing ‘1’ to this bit starts sampling.
When SSRC = 000, writing ‘0’ to this bit will end sampling and start conversion.
bit 0
DONE: A/D Conversion Status bit
1 = A/D conversion is done
0 = A/D conversion is not done or has not started
Clearing this bit will not affect any operation in progress.
Note: The DONE bit is not persistent in automatic modes. It is cleared by hardware at the
beginning of the next sample.
© 2008 Microchip Technology Inc.
Preliminary
DS61143E-page 495