PIC18F87K90-I/PTRSL Microchip Technology, PIC18F87K90-I/PTRSL Datasheet - Page 6

• Manufacturer Part Number: PIC18F87K90-I/PTRSL
• Description: MCU PIC 128K FLASH XLP 80TQFP
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F87K90-I/PTRSL

• Core Size: 8-Bit
• Program Memory Size: 128KB (64K x 16)
• Core Processor: PIC
• Speed: 64MHz
• Connectivity: I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 69
• 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 24x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TFQFP
• Controller Family/series: PIC18
• Eeprom Memory Size: 1024Byte
• Ram Memory Size: 4096Byte
• Cpu Speed: 16MIPS
• No. Of Timers: 11
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 4 KB
• Interface Type: I2C, SPI
• Maximum Clock Frequency: 64 MHz
• Number Of Timers: 11
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 12 bit, 24 Channel
• A/d Bit Size: 12 bit
• A/d Channels Available: 24
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PIC18F87K90 FAMILY
3. Module: Voltage Regulator Pins
2.4.1
In recent years, large value, low-voltage, surface
mount ceramic capacitors have become very cost
effective in sizes up to a few tens of microfarad. The
low-ESR, small physical size and other properties
make ceramic capacitors very attractive in many types
of applications.
Ceramic capacitors are suitable for use with the
V
However, some care is needed in selecting the capac-
itor to ensure that it maintains sufficient capacitance
over the intended operating range of the application.
Typical low-cost, 10 F ceramic capacitors are avail-
able in X5R, X7R and Y5V dielectric ratings (other
types are also available, but are less common). The
initial tolerance specifications for these types of capac-
itors are often specified as ±10% to ±20% (X5R and
X7R) or -20%/+80% (Y5V). However, the effective
capacitance that these capacitors provide in an appli-
cation circuit will also vary based on additional factors,
such as the applied DC bias voltage and the tempera-
ture. The total in-circuit tolerance is, therefore, much
wider than the initial tolerance specification.
The X5R and X7R capacitors typically exhibit satisfac-
tory temperature stability (for example, ±15%, over a
wide temperature range, but consult the manufac-
turer's data sheets for exact specifications). However,
Y5V capacitors typically have extreme temperature tol-
erance specifications of +22%/-82%. Due to the
extreme temperature tolerance, a 10 F nominal rated
Y5V type capacitor may not deliver enough total capac-
itance to meet minimum V
stability
Therefore, Y5V capacitors are not recommended for
use with the Vddcore regulator if the application must
operate over a wide temperature range.
DS80500B-page 6
DDCORE
Section 2.4.1 is added to
Regulator
V
DDCORE
and
voltage regulator of this microcontroller.
CONSIDERATIONS FOR CERAMIC
CAPACITORS
)
as shown below:
(ENVREG and
transient
Pins
(ENVREG
DDCORE
response
Section 2.4 Voltage
VCAP
voltage regulator
/V
and
requirements.
DDCORE
V
CAP
)
/
In addition to temperature tolerance, the effective
capacitance of large value ceramic capacitors can vary
substantially, based on the amount of DC voltage
applied to the capacitor. This effect can be very signifi-
cant, but is often overlooked or is not always
documented.
Typical DC bias voltage vs. capacitance change graph
for 16V, 10V and 6.3V rated capacitors is shown in
Figure
FIGURE 2-4
When selecting a ceramic capacitor to be used with the
V
high-voltage rating, so that the operating voltage is a
small percentage of the maximum rated capacitor volt-
age. For example, choose a ceramic capacitor rated at
16V for the 2.5V V
capacitors are shown in
DDCORE
-10
-20
-30
-40
-50
-60
-70
-80
10
0
0
6.3V Capacitor
2-4.
1
2
voltage regulator, it is suggested to select a
3
4
DC Bias Voltage (VDC)
5
6
10V Capacitor
DC BIAS VOLTAGE vs.
CAPACITANCE CHANGE
CHARACTERISTICS
DDCORE
 2010 Microchip Technology Inc.
7
Table
8
9
2-1.
16V Capacitor
10
voltage. Suggested
11
12
13
14
15
16
17