PIC18F66J15-I/PT Microchip Technology, PIC18F66J15-I/PT Datasheet - Page 290

• Manufacturer Part Number: PIC18F66J15-I/PT
• Description: IC PIC MCU FLASH 48KX16 64TQFP
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F66J15-I/PT

• Program Memory Type: FLASH
• Program Memory Size: 96KB (48K x 16)
• Package / Case: 64-TFQFP
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 50
• Ram Size: 3.8K x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 3.6 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 3936 B
• Interface Type: SPI/I2C/EUSART
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 50
• Number Of Timers: 5
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, DV164136, DM183032, DM183022
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 11-ch x 10-bit
• Package: 64TQFP
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 40 MHz
• Operating Supply Voltage: 2.5|3.3 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MA180015 - MODULE PLUG-IN 18F87J10 FOR HPCAC162062 - HEADER INTRFC MPLAB ICD2 64/80PAC164327 - MODULE SKT FOR 64TQFP
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC18F87J10 FAMILY
24.3
All of the PIC18F87J10 family devices power their core
digital logic at a nominal 2.5V. For designs that are
required to operate at a higher typical voltage, such as
3.3V, all devices in the PIC18F87J10 family incorporate
an on-chip regulator that allows the device to run its
core logic from V
The regulator is controlled by the ENVREG pin. Tying
V
vides power to the core from the other V
the regulator is enabled, a low-ESR filter capacitor
must be connected to the V
(Figure 24-2). This helps to maintain the stability of the
regulator. The recommended value for the filter capac-
itor is provided in Section 27.3 “DC Characteristics:
PIC18F87J10 Family (Industrial)”.
If ENVREG is tied to V
this case, separate power for the core logic at a nomi-
nal 2.5V must be supplied to the device on the
V
levels, typically 3.3V. Alternatively, the V
and V
nominal voltage. Refer to Figure 24-2 for possible
configurations.
24.3.1
When the on-chip regulator is enabled, PIC18F87J10
family 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 BOR Reset. This event is captured by
the BOR flag bit (RCON<0>).
The operation of the BOR is described in more detail in
Section 5.4
Section 5.4.1 “Detecting BOR”. The brown-out voltage
levels are specific in Section 27.1 “DC Characteristics:
Supply Voltage, PIC18F87J10 Family (Industrial)”.
24.3.2
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
never exceed V
DS39663F-page 288
DD
DDCORE
to the pin enables the regulator, which in turn, pro-
DD
On-Chip Voltage Regulator
pins can be tied together to operate at a lower
/V
CAP
ON-CHIP REGULATOR AND BOR
POWER-UP REQUIREMENTS
“Brown-out
pin to run the I/O pins at higher voltage
DD
DD
by 0.3 volts.
.
SS
, the regulator is disabled. In
Reset
DDCORE
DD
(BOR)”
DDCORE
DDCORE
pins. When
/V
CAP
/V
must
CAP
and
pin
FIGURE 24-2:
Note 1:
Regulator Enabled (ENVREG tied to V
Regulator Disabled (ENVREG tied to ground):
Regulator Disabled (V
2.5V
2.5V
C
(1)
(1)
F
3.3V
These are typical operating voltages. Refer
to Section 27.1 “DC Characteristics:
Supply Voltage” for the full operating
ranges of V
3.3V
(1)
V
ENVREG
V
V
CONNECTIONS FOR THE
ON-CHIP REGULATOR
DD
DDCORE
SS
DD
© 2009 Microchip Technology Inc.
DD
PIC18FXXJ10/XXJ15
V
ENVREG
V
V
V
ENVREG
V
V
DD
DDCORE
SS
and V
DD
DDCORE
SS
tied to V
PIC18FXXJ10/XXJ15
PIC18FXXJ10/XXJ15
/V
DDCORE
CAP
/V
/V
DDCORE
CAP
CAP
.
DD
):
):