PIC32MX664F064HT-I/PT Microchip Technology, PIC32MX664F064HT-I/PT Datasheet - Page 170

• Manufacturer Part Number: PIC32MX664F064HT-I/PT
• Description: 64 PINS, 64KB Flash, 32KB RAM, 80 MHz, USB, Ethernet, 4 DMA 64 TQFP 10x10x1mm T/
• Manufacturer: Microchip Technology
• Series: PIC® 32MXr

Specifications of PIC32MX664F064HT-I/PT

• Core Processor: MIPS32® M4K™
• Core Size: 32-Bit
• Speed: 80MHz
• Connectivity: Ethernet, I²C, SPI, UART/USART, USB OTG
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• 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
• Package / Case: 64-TQFP
• Processor Series: PIC32MX5x
• Core: MIPS32
• Data Bus Width: 32 bit
• Data Ram Size: 32 KB
• Interface Type: I2C, SPI, USART
• Maximum Clock Frequency: 80 MHz
• Number Of Programmable I/os: 53
• Number Of Timers: 5
• Operating Supply Voltage: 2.3 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

PIC32MX5XX/6XX/7XX
28.2
This section describes the operation of the WDT and
Power-up Timer of the PIC32MX5XX/6XX/7XX.
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.
FIGURE 28-1:
DS61156F-page 170
WDTCLR = 1
WDT Enable
WDT Enable
Reset Event
Watchdog Timer (WDT)
PWRT Enable
Oscillator
WDT Enable
LPRC
Wake
WATCHDOG AND POWER-UP TIMER BLOCK DIAGRAM
WDT Counter Reset
Clock
25-bit Counter
FWDTPS<4:0> (DEVCFG1<20:16>)
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
1:64 Output
25
1
Decoder
PWRT Enable
Power Save
© 2010 Microchip Technology Inc.
0
1
LPRC
Control
PWRT
Device Reset
NMI (Wake-up)