PIC24FJ32GA104-I/PT Microchip Technology, PIC24FJ32GA104-I/PT Datasheet - Page 219

• Manufacturer Part Number: PIC24FJ32GA104-I/PT
• Description: 16-bit, 16 MIPS, 32KB Flash, 8KB RAM, Nanowatt XLP 44 TQFP 10x10x1mm TRAY
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 24Fr

Specifications of PIC24FJ32GA104-I/PT

• Core Processor: PIC
• Core Size: 16-Bit
• Speed: 32MHz
• Connectivity: I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 35
• Program Memory Size: 32KB (11K x 24)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 3.6 V
• Data Converters: A/D 13x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 876-1004 - PIC24 BREAKOUT BOARD
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

21.0
The 10-bit A/D Converter has the following key
features:
• Successive Approximation (SAR) conversion
• Conversion speeds of up to 500 ksps
• 13 analog input pins
• External voltage reference input pins
• Internal band gap reference inputs
• Automatic Channel Scan mode
• Selectable conversion trigger source
• 16-word conversion result buffer
• Selectable Buffer Fill modes
• Four result alignment options
• Operation during CPU Sleep and Idle modes
On all PIC24FJ64GA104 family devices, the 10-bit A/D
Converter has 13 analog input pins, designated AN0
through AN12. In addition, there are two analog input
pins for external voltage reference connections (V
and V
shared with other analog input pins.
 2010 Microchip Technology Inc.
Note:
REF
10-BIT HIGH-SPEED A/D
CONVERTER
-). These voltage reference inputs may be
This data sheet summarizes the features
of this group of PIC24F devices. It is not
intended to be a comprehensive reference
source. For more information, refer to the
“PIC24F
Section 17. “10-Bit A/D Converter”
(DS39705).
Family
Reference
Manual”,
REF
PIC24FJ64GA104 FAMILY
+
A block diagram of the A/D Converter is shown in
Figure 21-1.
To perform an A/D conversion:
1.
2.
Configure the A/D module:
a)
b)
c)
d)
e)
f)
g)
Configure the A/D interrupt (if required):
a)
b)
Configure port pins as analog inputs and/or
select
(AD1PCFGL<15:0> and AD1PCFGH<1:0>).
Select voltage reference source to match
expected
(AD1CON2<15:13>).
Select the analog conversion clock to match
the desired data rate with the processor
clock (AD1CON3<7:0>).
Select the appropriate sample/conversion
sequence
AD1CON3<12:8>).
Select
presented in the buffer (AD1CON1<9:8>).
Select interrupt rate (AD1CON2<5:2>).
Turn on A/D module (AD1CON1<15>).
Clear the AD1IF bit.
Select A/D interrupt priority.
band
how
range
(AD1CON1<7:5>
conversion
gap
on
reference
DS39951C-page 219
analog
results
inputs
inputs
and
are