PIC24EP64MC204-E/PT Microchip Technology, PIC24EP64MC204-E/PT Datasheet - Page 319

• Manufacturer Part Number: PIC24EP64MC204-E/PT
• Description: 16 Bit MCU, 64KB Flash, 8KB RAM, 60 MHz, 44 Pin, MCPWM,QEI, 3 OpAmp, 4 Comp, PTG
• Manufacturer: Microchip Technology

23.0
The dsPIC33EPXXXGP50X, dsPIC33EPXXXMC20X/
50X, and PIC24EPXXXGP/MC20X devices have one
ADC module. The ADC module supports up to 16
analog input channels.
On ADC1, the AD12B bit (AD1CON1<10>) allows each
of the ADC modules to be configured by the user as
either a 10-bit, 4-Sample and Hold (S&H) ADC (default
configuration) or a 12-bit, 1-S&H ADC.
 2011-2012 Microchip Technology Inc.
Note:
Note 1: This data sheet summarizes the fea-
dsPIC33EPXXXGP50X, dsPIC33EPXXXMC20X/50X, AND PIC24EPXXXGP/MC20X
2: Some registers and associated bits
10-BIT/12-BIT ANALOG-TO-
DIGITAL CONVERTER (ADC)
The ADC module needs to be disabled
before modifying the AD12B bit.
tures of the dsPIC33EPXXXGP50X,
dsPIC33EPXXXMC20X/50X,
PIC24EPXXXGP/MC20X
devices. It is not intended to be a
comprehensive reference source. To
complement the information in this data
sheet, refer to Section 16. “Analog-to-
Digital Converter (ADC)” (DS70621)
of
Reference Manual”, which is available
from
(www.microchip.com).
described in this section may not be
available on all devices. Refer to
Section 4.0 “Memory Organization”
this data sheet for device-specific register
and bit information.
the
the
“dsPIC33E/PIC24E
Microchip
families
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23.1
23.1.1
The 10-bit ADC configuration has the following key
features:
• Successive Approximation (SAR) conversion
• Conversion speeds of up to 1.1 Msps
• Up to 16 analog input pins
• Connections to three internal op amps
• Connections to the Charge Time Measurement Unit
• Channel selection and triggering can be con-
• External voltage reference input pins
• Simultaneous sampling of:
• Automatic Channel Scan mode
• Selectable conversion trigger source
• Selectable Buffer Fill modes
• Four result alignment options (signed/unsigned,
• Operation during CPU Sleep and Idle modes
23.1.2
The 12-bit ADC configuration supports all the features
listed above, with the exception of the following:
• In the 12-bit configuration, conversion speeds of
• There is only one S&H amplifier in the 12-bit
Depending on the particular device pinout, the ADC
can have up to 16 analog input pins, designated AN0
through AN15. These analog inputs are shared with
op amp inputs and outputs, comparator inputs, and
external voltage references. When op amp/comparator
functionality is enabled or an external voltage reference
is used, the analog input that shares that pin is no lon-
ger available. The actual number of analog input pins,
op amps and external voltage reference input
configuration depends on the specific device.
A block diagram of the ADC module is shown in
Figure
ADC conversion clock period.
(CTMU) and temperature measurement diode
trolled by the Peripheral Trigger Generator (PTG)
- Up to four analog input pins
- Three op amp outputs
- Combinations of analog inputs and op amp
fractional/integer)
up to 500 ksps are supported
configuration; therefore, simultaneous sampling
of multiple channels is not supported.
outputs
23-1.
Key Features
10-BIT ADC CONFIGURATION
12-BIT ADC CONFIGURATION
Figure 23-2
provides a diagram of the
DS70657F-page 319