PIC32MX440F512H-80I/PT Microchip Technology, PIC32MX440F512H-80I/PT Datasheet - Page 547

• 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

26.0
This section describes the operation of the Watchdog
Timer
PIC32MX3XX/4XX.
TABLE 26-1:
FIGURE 26-1:
© 2008 Microchip Technology Inc.
Awake
Sleep
Idle
Note 1:
Device Mode
Note:
(WDT)
WATCHDOG TIMER
WDTCLR =
Reference Manual” (DS61132) for a
Status bits are in the RCON register.
This data sheet summarizes the features of
the PIC32MX3XX/4XX of devices. It is not
intended to be a comprehensive reference
source. Refer to the “PIC32MX Family
detailed description of this peripheral.
WDT Enable
PWRT Enable
Oscillator
WDT Enable
LPRC
RESULTS OF A WDT TIME-OUT EVENT FOR AVAILABLE MODES OF DEVICE
OPERATION
and
Device Reset
Wake
Generated
1
WATCHDOG AND POWER-UP TIMER BLOCK DIAGRAM
Yes
No
No
Power-up
Non-Maskable
Generated
Timer
Interrupt
Yes
Yes
No
WDT Counter Reset
of
Preliminary
the
WDTO
Clock
Yes
Yes
Yes
Set
(1)
Bit
The WDT, when enabled, operates from the internal
Low-Power Oscillator (LPRC) clock source and can be
used to detect system software malfunctions by reset-
ting the device if the WDT is not cleared periodically in
software. Various WDT time-out periods can be
selected using the WDT postscaler. The WDT can also
be used to wake the device from Sleep or Idle mode.
Refer to Figure 26-1.
The following are some of the key features of the WDT
module:
• Configuration or software controlled
• User-configurable time-out period
• Can wake the device from Sleep or Idle
25-Bit Counter
FWDTPS<4:0>(DEVCFG1<20:16>)
SLEEP
1:64 Output
PIC32MX3XX/4XX
25
Yes
Set
No
No
(1)
1
Bit
Decoder
IDLE
PWRT Enable
Power Save
(1)
Yes
No
No
Bit Set
0
1
DS61143C-page 545
Control
PWRT
Device Reset
NMI (Wake-up)
LPRC
Registers
Device
Reset
Yes
No
No