PIC32MX440F512H-80I/PT Microchip Technology, PIC32MX440F512H-80I/PT Datasheet - Page 502

• Manufacturer Part Number: PIC32MX440F512H-80I/PT
• Description: IC PIC MCU FLASH 512K 64-TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 32MXr

Specifications of PIC32MX440F512H-80I/PT

• Program Memory Type: FLASH
• Program Memory Size: 512KB (512K 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
• No. Of I/o's: 51
• Ram Memory Size: 32KB
• Cpu Speed: 80MHz
• No. Of Timers: 5
• Embedded Interface Type: EUART, I2C, PSP, SPI
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC244003 - 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

PIC32MX3XX/4XX
FIGURE 22-3:
22.4
The following section describes bits not covered in the
previous section.
22.4.1
Clearing the SAMP (AD1CON1<1>) bit while in Manual
Sample mode will terminate sampling, but may also
start a conversion if SSRC (AD1CON1<7:5>) = 000.
Clearing the ASAM (AD1CON1<2>) bit while in Auto-
Sample
acquire/convert sequence, however, sampling will not
automatically resume after the current sample is
converted.
22.4.2
Clearing the ON (AD1CON1<15>) bit during a conver-
sion will abort the current conversion. The ADC Result
register will NOT be updated with the partially com-
pleted A/D conversion sample. That is, the correspond-
ing result buffer location will continue to contain the
value of the last completed conversion (or the last
value written to the buffer).
22.4.3
When the conversion result buffer is split using the
BUFM control bit, the BUFS Status bit (AD1CON2<7>)
indicates which half of the buffer the A/D converter is
currently filling. If BUFS = 0, then the A/D converter is
filling ADC1BUF0-ADC1BUF7 and the user software
should read conversion values from ADC1BUF8-
ADC1BUFF. If BUFS = 1, the situation is reversed and
the user software should read conversion values from
ADC1BUF0-ADC1BUF7.
DS61143C-page 500
Instruction Execution SET AD1CON1, ASM
ADC1BUF0
ADC1BUF1
Miscellaneous ADC Functions
ADCLK
mode
SAMP
DONE
Aborting Sampling
ABORTING A CONVERSION
BUFFER FILL STATUS
will
CONVERTING 1 CHANNEL AT 400 KSPS, AUTO-SAMPLE START, 2 T
SAMPLING TIME
not
terminate
= 2 T
T
SAMP
AD
an
ongoing
Preliminary
= 12 T
T
CONV
AD
= 2 T
T
SAMP
AD
22.4.4
The ADC module provides a method of measuring the
internal offset error. After this offset error is measured,
it can be subtracted, in software, from the result of an
A/D conversion. Use the following steps to perform an
offset measurement:
1.
2.
3.
4.
5.
Note:
Configure the A/D converter in the same manner
as it will be used in the application.
Set the OFFCAL bit (AD1CON2<12>). This
overrides the input selections and connects the
sample and hold inputs to AVss.
If auto-sample is used set the CLRASAM bit
(AD1CON1<4>) to force conversions.
Enable the A/D converter and perform a conver-
sion. The result that is written to the ADC result
buffer is the internal offset error.
Clear the OFFCAL (AD2CON<12>) bit to return
the A/D converter to normal operation.
OFFSET CALIBRATION
Only positive ADC offsets can be
measured with this method.
= 12 T
T
CONV
AD
© 2008 Microchip Technology Inc.
AD