PIC32MX664F064LT-I/PT Microchip Technology Inc., PIC32MX664F064LT-I/PT Datasheet - Page 171

• Manufacturer Part Number: PIC32MX664F064LT-I/PT
• Description: 100 TQFP 12X12X1MM T/R, 100 PINS, 64KB FLASH, 32KB RAM, 80 MHZ, USB, ETHERNET, 4
• Manufacturer: Microchip Technology Inc.

Specifications of PIC32MX664F064LT-I/PT

• A/d Inputs: 16-Channel, 10-Bit
• Comparators: 2
• Eeprom Memory: 0 Bytes
• Input Output: 85
• Interface: I2C/SPI/UART/USB
• Memory Type: Flash
• Number Of Bits: 32
• Package Type: 100-pin TQFP
• Programmable Memory: 64K Bytes
• Ram Size: 32K Bytes
• Speed: 80 MHz
• Temperature Range: –40 to +85 °C
• Timers: 5-16-bit
• Voltage, Range: 2.3-3.6 V
• Lead Free Status / Rohs Status: RoHS Compliant part

28.3
All PIC32MX5XX/6XX/7XX devices’ core and digital
logic are designed to operate at a nominal 1.8V. To
simplify system designs, most devices in the
PIC32MX5XX/6XX/7XX family incorporate an on-chip
regulator providing the required core logic voltage from
V
A low-ESR capacitor (such as tantalum) must be
connected to the V
This helps to maintain the stability of the regulator.
The recommended value for the filter capacitor is
provided in
28.3.1
It takes a fixed delay for the on-chip regulator to generate
an output. During this time, designated as T
execution is disabled. T
device resumes operation after any power-down,
including Sleep mode.
If the regulator is disabled, a separate Power-up Timer
(PWRT) is automatically enabled. The PWRT adds a
fixed delay of T
Section 31.0 “Electrical Characteristics”
information on T
28.3.2
PIC32MX5XX/6XX/7XX devices also have a simple
brown-out capability. If the voltage supplied to the
regulator is inadequate to maintain a regulated level,
the regulator Reset circuitry will generate a Brown-out
Reset. This event is captured by the BOR flag bit
(RCON<1>). The brown-out voltage levels are specific
in
© 2010 Microchip Technology Inc.
DD
Note:
Section 31.1 “DC Characteristics”
.
On-Chip Voltage Regulator
It is important that the low-ESR capacitor
is placed as close as possible to the
V
ON-CHIP REGULATOR AND POR
ON-CHIP REGULATOR AND BOR
Section 31.1 “DC Characteristics”
CAP
PU AND
/V
CORE
CAP
PWRT
/V
T
PU
PWRT
pin.
CORE
at device start-up. See
is applied every time the
.
pin (see
.
Figure
for more
PU
, code
28-2).
.
28.3.3
The on-chip regulator is designed to meet the power-up
requirements for the device. If the application does not
use the regulator, then strict power-up conditions must
be adhered to. While powering up, V
exceed V
FIGURE 28-2:
PIC32MX5XX/6XX/7XX
Note 1:
(10 μF typ)
2:
DD
C
POWER-UP REQUIREMENTS
EFC
by 0.3V.
These are typical operating voltages. Refer
to
the full operating ranges of V
V
It is important that the low-ESR capacitor
is placed as close as possible to the
V
CORE
CAP
(2)
Section 31.1 “DC Characteristics”
3.3V
/V
.
CORE
(1)
CONNECTIONS FOR THE
ON-CHIP REGULATOR
pin.
V
V
V
DD
CAP
SS
PIC32
/V
CORE
DS61156F-page 171
CORE
DD
and
must never
for