DSPIC33FJ06GS101TESLASHML datasheet(240/346 Pages) MICROCHIP

240 / 346 page

dsPIC33FJ06GS101/X02 and dsPIC33FJ16GSX02/X04

DS70318D-page 238

Preliminary

19.3

Module Functionality

The high-speed 10-bit ADC module is designed to

support power conversion applications when used with

the High-Speed PWM module. The ADC may have one

or two SAR modules, depending on the device variant.

If two SARs are present on a device, two conversions

can be processed at a time, yielding 4 Msps conversion

rate. If only one SAR is present on a device, only one

conversion can be processed at a time, yielding 2 Msps

conversion rate. The high-speed 10-bit ADC produces

two 10-bit conversion results in a 0.5 microsecond.

The ADC module supports up to 12 external analog

inputs and two internal analog inputs. To monitor

reference voltage, two internal inputs, AN12 and AN13,

are connected to the EXTREF and internal band gap

voltages (1.2V), respectively.

The analog reference voltage is defined as the device

supply voltage (AVDD/AVSS).

The ADC module uses the following control and status

registers:

• ADCON: A/D Control Register

• ADSTAT: A/D Status Register

• ADBASE: A/D Base Register(1,2)

• ADPCFG: A/D Port Configuration Register

• ADCPC0: A/D Convert Pair Control Register 0

• ADCPC1: A/D Convert Pair Control Register 1

• ADCPC2: A/D Convert Pair Control Register 2(1)

• ADCPC3: A/D Convert Pair Control Register 3(1)

The ADCON register controls the operation of the

ADC module. The ADSTAT register displays the

status of the conversion processes. The ADPCFG

registers configure the port pins as analog inputs or

as digital I/O. The ADCPCx registers control the

triggering of the ADC conversions. See Register 19-1

through Register 19-8 for detailed bit configurations.

Note:

A unique feature of the ADC module is its

ability

sample

inputs

asynchronous manner. Individual sample

and hold circuits can be triggered

independently of each other.

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