PIC18F67K22-I/MR Microchip Technology, PIC18F67K22-I/MR Datasheet - Page 421

• Manufacturer Part Number: PIC18F67K22-I/MR
• Description: 128kB Flash, 4kB RAM, 1kB EE, NanoWatt XLP, GP 64 QFN 9x9x0.9mm TUBE
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F67K22-I/MR

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 64MHz
• Connectivity: I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 128KB (64K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 16x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-VFQFN Exposed Pad
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

28.3
All of the PIC18F87K22 family devices power their core
digital logic at a nominal 3.3V. For designs that are
required to operate at a higher typical voltage, such as
5V, all family devices incorporate two on-chip regula-
tors that allow the device to run its core logic from V
Those regulators are:
• Normal On-Chip Regulator
• Ultra Low-Power On-Chip Regulator
The hardware configuration of these regulators is the
same and is explained in
Enable/Disable By Hardware”
differences relate to when the device enters Sleep, as
explained in
in Sleep”
28.3.1
The regulator can be enabled or disabled only by hard-
ware. The regulator is controlled by the ENVREG pin
and the V
28.3.1.1
Tying V
provides power to the core from the other V
When the regulator is enabled, a low-ESR filter capac-
itor must be connected to the V
Figure
stability. The recommended value for the filter capacitor
is given in
Down and Supply Current PIC18F87K22 Family
(Industrial/Extended)”
28.3.1.2
If the regulator is disabled by connecting V
ENVREG pin, the power to the core is supplied directly
by V
specified V
a 0.1 µF capacitor should be connected to the
V
When the regulator is being used, the overall voltage
budget is very tight. The regulator should operate the
device down to 1.8V. When V
regulator no longer regulates, but the output voltage fol-
lows the input until V
the output of the regulator output may drop to 0V.
 2009-2011 Microchip Technology Inc.
DDCORE
DD
28-2). This helps maintain the regulator’s
. The voltage levels for V
DD
On-Chip Voltage Regulator
/V
DDCORE
.
to the pin enables the regulator, which in turn,
Section 31.2 “DC Characteristics: Power-
DDCORE
CAP
REGULATOR ENABLE/DISABLE BY
HARDWARE
Section 28.3.2 “Operation of Regulator
Regulator Enable Mode
Regulator Disable Mode
pin (see
/V
levels. In Regulator Disabled mode,
CAP
DD
reaches 1.8V. Below this voltage,
.
pin.
Figure
Section 28.3.1 “Regulator
DD
DD
28-2).
DDCORE
. The regulators’ only
drops below 3.3V, the
must not exceed the
/V
CAP
DD
SS
pins.
pin (see
to the
DD
.
PIC18F87K22 FAMILY
FIGURE 28-2:
Note 1:
Regulator Enabled (ENVREG tied to V
Regulator Disabled (ENVREG tied to V
C
3.3V
These are typical operating voltages. For the
full operating ranges of V
see
Power-Down and Supply Current
PIC18F87K22 Family (Industrial/
Extended)”
F
5V
Section 31.2 “DC Characteristics:
(1)
0.1µF
CONNECTIONS FOR THE
ON-CHIP REGULATOR
.
V
ENVREG
V
V
V
ENVREG
V
V
DD
DDCORE
SS
PIC18F87K22
DD
DDCORE
SS
PIC18F87K22
/V
/V
CAP
DD
DS39960D-page 421
CAP
and V
DD
SS
):
):
DDCORE
,