PIC32MX440F256H-80I/PT Microchip Technology, PIC32MX440F256H-80I/PT Datasheet - Page 507

• Manufacturer Part Number: PIC32MX440F256H-80I/PT
• Description: IC PIC MCU FLASH 256K 64-TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 32MXr

Specifications of PIC32MX440F256H-80I/PT

• Program Memory Type: FLASH
• Program Memory Size: 256KB (256K x 8)
• Package / Case: 64-TFQFP
• Core Processor: MIPS32® M4K™
• Core Size: 32-Bit
• Speed: 80MHz
• Connectivity: I²C, IrDA, LIN, PMP, SPI, UART/USART, USB OTG
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 53
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 2.3 V ~ 3.6 V
• Data Converters: A/D 16x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC32MX4xx
• Core: MIPS
• Data Bus Width: 32 bit
• Data Ram Size: 32 KB
• Interface Type: I2C , SPI , UART
• Maximum Clock Frequency: 80 MHz
• Number Of Programmable I/os: 51
• Number Of Timers: 5 x 16 bit, 1 x 32 bit
• Operating Supply Voltage: 2.3 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52713-733, 52714-737
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, DM320003, DM320002, MA320002
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit
• Controller Family/series: PIC32
• Ram Memory Size: 32KB
• Cpu Speed: 80MHz
• No. Of Timers: 5
• Embedded Interface Type: EUSART, I2C, SPI, USB
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 876-1000 - PIC32 BREAKOUT BOARDAC244003 - TEST BD MPLAB REAL ICE LOOPBACKDM320003 - BOARD DEMO USB PIC32 OTGAC244006 - KIT MPLAB REAL ICE TRACEAC164327 - MODULE SKT FOR 64TQFP
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

22.4.12.2
ing input selections. The first sample uses the MUX A
inputs specified by the CH0SA (AD1CHS<19:16>) and
CH0NA (AD1CHS<23>) bits. The next sample uses the
MUX
(AD1CHS<27:24>) and CH0NB (AD1CHS<31>) bits.
In the following example, one of the MUX B input
specifications uses 2 analog inputs as a differential
source to the sample/hold.
This example also demonstrates use of the dual 8-word
buffers. An interrupt occurs after every 4th sample,
which results in filling 4-words into the buffer on each
interrupt.
22.4.12.3
It is possible to sample by scanning through the input
channels and alternate between MUX A and MUX B.
When the Alternating Sample mode is selected, the
first input to be sampled will be the input selected for
MUX A, the second sample will be the input selected
for MUX B. Then the process repeats. When scanning
is combined with Alternating Input mode, the positive
input to MUX A is selected by the contents of the
AD1CSSL register, not CH0SA. For each sample that
MUX A is selected the next item in the scan list is sam-
pled. The positive input to MUX B is selected by
CH0SB (AD1CHS<27:24>).
When ASAM (AD1CON1<2>) is clear, sampling will not
resume after conversion completion, but will occur
when setting the SAMP (AD1CON1<1>) bit.
© 2008 Microchip Technology Inc.
Setting the ALTS (AD1CON2<0>) bit enables alternat-
B
inputs
Example: Using Alternating MUX A,
MUX B Input Selections
Example: Converting Three Analog
Inputs Using Alternating Sample
Mode and a Scan List
specified
by
the
CH0SB
Preliminary
22.5
A simple initialization code example for the ADC
module is provided in Example 22-4.
In this particular configuration, all 16 analog input pins,
AN0-AN15, are set up as analog inputs. Operation in
IDLE mode is disabled, output data is in unsigned frac-
tional format, and AV
V
sion (conversion trigger), are performed manually in
software. The CH0 SHA is used for conversions. Scan-
ning of inputs is disabled, and an interrupt occurs after
every acquisition/convert sequence (1 conversion
result). The ADC conversion clock is T
Since acquisition is started manually by setting the
SAMP bit (AD1CON1<1>) after each conversion is
complete, the auto-sample time bits, SAMC<4:0>
(AD1CON3<12:8>), are ignored. Moreover, since the
start of conversion (i.e., end of acquisition) is also trig-
gered manually, the SAMP bit needs to be cleared
each time a new sample needs to be converted.
R
-. The start of acquisition, as well as start of conver-
PIC32MX3XX/4XX
Initialization
DD
and AV
SS
are used for V
DS61143C-page 505
PB
/2.
R
+ and