DSPIC33FJ12GP202-I/SS Microchip Technology, DSPIC33FJ12GP202-I/SS Datasheet - Page 161

• Manufacturer Part Number: DSPIC33FJ12GP202-I/SS
• Description: IC DSPIC MCU/DSP 12K 28SSOP
• Manufacturer: Microchip Technology
• Series: dsPIC™ 33Fr

Specifications of DSPIC33FJ12GP202-I/SS

• Core Processor: dsPIC
• Core Size: 16-Bit
• Speed: 40 MIPs
• Connectivity: I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 21
• Program Memory Size: 12KB (12K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 10x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-SSOP
• Core Frequency: 40MHz
• Core Supply Voltage: 2.75V
• Embedded Interface Type: I2C, JTAG, SPI, UART
• No. Of I/o's: 21
• Flash Memory Size: 12KB
• Supply Voltage Range: 3V To 3.6V
• Package: 28SSOP
• Device Core: dsPIC
• Family Name: dsPIC33
• Maximum Speed: 40 MHz
• Operating Supply Voltage: 3.3 V
• Data Bus Width: 16 Bit
• Number Of Programmable I/os: 21
• Interface Type: I2C/SPI/UART
• On-chip Adc: 10-chx12-bit
• Number Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

18.0
Microchip dsPIC33FJ12GP201/202 devices have up to
10 ADC module input channels.
The AD12B bit (AD1CON1<10>) allows each of the
ADC modules to be configured as either a 10-bit,
4-sample-and-hold ADC (default configuration), or a
12-bit, 1-sample-and-hold ADC.
18.1
The 10-bit ADC configuration has the following key
features:
• Successive Approximation (SAR) conversion
• Conversion speeds of up to 1.1 Msps
• Up to 10 analog input pins
• External voltage reference input pins
• Simultaneous sampling of up to four analog input
• 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
• 16-word bit conversion result buffer
The 12-bit ADC configuration supports all the above
features, except:
• In the 12-bit configuration, conversion speeds of
• There is only one sample-and-hold amplifier in the
© 2009 Microchip Technology Inc.
Note:
Note:
pins
fractional/integer)
up to 500 ksps are supported
12-bit configuration, so simultaneous sampling of
multiple channels is not supported.
10-BIT/12-BIT
ANALOG-TO-DIGITAL
CONVERTER (ADC)
Key Features
This data sheet summarizes the features
of the dsPIC33FJ12GP201/202 family of
devices. It is not intended to be a
comprehensive
complement the information in this data
sheet, refer to the “dsPIC33F Family
Reference
“Analog-to-Digital
without DMA” (DS70210), which is
available
(www.microchip.com).
The ADC module must be disabled before
the AD12B bit can be modified.
on
Manual”,
the
reference
Converter
Microchip
Section
source.
website
(ADC)
28.
Preliminary
To
dsPIC33FJ12GP201/202
Depending on the particular device pinout, the ADC
can have up to 10 analog input pins, designated AN0
through AN9. In addition, there are two analog input
pins for external voltage reference connections. These
voltage reference inputs can be shared with other
analog input pins.
The actual number of analog input pins and external
voltage reference input configuration depend on the
specific device.
Block diagrams of the ADC module are shown in
Figure 18-1 and Figure 18-2.
18.2
To configure the ADC module:
1.
2.
3.
4.
5.
6.
7.
Select
(AD1PCFGH<15:0> or AD1PCFGL<15:0>).
Select voltage reference source to match
expected
(AD1CON2<15:13>).
Select the analog conversion clock to match
desired
(AD1CON3<7:0>).
Determine how many sample-and-hold chan-
nels will be
AD1PCFGH<15:0> or AD1PCFGL<15:0>).
Select
sequence
AD1CON3<12:8>).
Select the way conversion results are presented
in the buffer (AD1CON1<9:8>).
a)
Configure ADC interrupt (if required):
a)
b)
ADC Initialization
Turn on the ADC module (AD1CON1<15>).
Clear the AD1IF bit.
Select ADC interrupt priority.
the
port
data
range
appropriate
rate
used
pins
(AD1CON1<7:5>
with
on
(AD1CON2<9:8> and
as
sample/conversion
processor
analog
DS70264D-page 159
analog
inputs
inputs
clock
and