PIC18F14K50-I/SS Microchip Technology, PIC18F14K50-I/SS Datasheet - Page 226

• Manufacturer Part Number: PIC18F14K50-I/SS
• Description: IC PIC MCU FLASH 8KX16 20-SSOP
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F14K50-I/SS

• Program Memory Type: FLASH
• Program Memory Size: 16KB (8K x 16)
• Package / Case: 20-SSOP
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 48MHz
• Connectivity: I²C, SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 14
• Eeprom Size: 256 x 8
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 16 bit
• Data Ram Size: 768 B
• Interface Type: EUSART, I2C, MSSP, SPI, USB
• Maximum Clock Frequency: 48 MHz
• Number Of Programmable I/os: 15
• Number Of Timers: 4
• 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
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 11 Channel
• Package: 20SSOP
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 48 MHz
• Operating Supply Voltage: 3.3|5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: AC244023 - PROC EXTENS PAK PIC18F1XK50DV164126 - KIT DEVELOPMENT USB W/PICKIT 2DM164127 - KIT DEVELOPMENT USB 18F14/13K50AC164112 - VOLTAGE LIMITER MPLAB ICD2 VPPXLT20SS-1 - SOCKET TRANSITION 18DIP 20SSOPAC164307 - MODULE SKT FOR PM3 28SSOP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC18F/LF1XK50
18.2
Each
Configuration register: CM1CON0 for Comparator C1
and CM2CON0 for Comparator C2. In addition,
Comparator C2 has a second control register,
CM2CON1, for controlling the interaction with Timer1 and
simultaneous reading of both comparator outputs.
The CM1CON0 and CM2CON0 registers (see Registers
18-1 and 18-2, respectively) contain the control and
status bits for the following:
• Enable
• Input selection
• Reference selection
• Output selection
• Output polarity
• Speed selection
18.2.1
Setting the CxON bit of the CMxCON0 register enables
the comparator for operation. Clearing the CxON bit
disables the comparator resulting in minimum current
consumption.
18.2.2
The CxCH<1:0> bits of the CMxCON0 register direct
one of four analog input pins to the comparator
inverting input.
18.2.3
Setting the CxR bit of the CMxCON0 register directs an
internal voltage reference or an analog input pin to the
non-inverting
Section 21.0
information on the Internal Voltage Reference module.
18.2.4
The output of the comparator can be monitored by
reading either the CxOUT bit of the CMxCON0 register
or the MCxOUT bit of the CM2CON1 register. In order
to make the output available for an external connection,
the following conditions must be true:
• CxOE bit of the CMxCON0 register must be set
• Corresponding TRIS bit must be cleared
• CxON bit of the CMxCON0 register must be set
Both comparators share the same output pin
(C12OUT). Priority is determined by the states of the
C1OE and C2OE bits.
DS41350E-page 226
Note:
comparator
Comparator Control
COMPARATOR ENABLE
COMPARATOR INPUT SELECTION
To use CxIN+ and C12INx- pins as analog
inputs, the appropriate bits must be set in
the
corresponding TRIS bits must also be set
to disable the output drivers.
COMPARATOR REFERENCE
SELECTION
COMPARATOR OUTPUT
SELECTION
“V
input
OLTAGE
ANSEL
has
of
a
R
the
EFERENCES
separate
register
comparator.
”
control
and
for
more
the
See
and
Preliminary
TABLE 18-1:
18.2.5
Inverting the output of the comparator is functionally
equivalent to swapping the comparator inputs. The
polarity of the comparator output can be inverted by
setting the CxPOL bit of the CMxCON0 register.
Clearing the CxPOL bit results in a non-inverted output.
Table 18-2
conditions, including polarity control.
TABLE 18-2:
18.2.6
The trade-off between speed or power can be opti-
mized during program execution with the CxSP control
bit. The default state for this bit is ‘1’ which selects the
normal speed mode. Device power consumption can
be optimized at the cost of slower comparator propaga-
tion delay by clearing the CxSP bit to ‘0’.
18.3
The comparator output is indeterminate for a period of
time after the change of an input source or the selection
of a new reference voltage. This period is referred to as
the response time. The response time of the
comparator differs from the settling time of the voltage
reference. Therefore, both of these times must be
considered when determining the total response time
to a comparator input change. See the Comparator and
Voltage Reference Specifications in
“Electrical Specifications”
Input Condition
CxV
CxV
CxV
CxV
Note 1: The CxOE bit overrides the PORT data
C10E
IN
IN
IN
IN
0
0
1
1
- > CxV
- < CxV
- > CxV
- < CxV
2: The internal output of the comparator is
Comparator Response Time
COMPARATOR OUTPUT POLARITY
COMPARATOR SPEED SELECTION
latch. Setting the CxON has no impact on
the port override.
latched with each instruction cycle.
Unless otherwise specified, external
outputs are not latched.
shows the output state versus input
IN
IN
IN
IN
+
+
+
+
COMPARATOR OUTPUT
PRIORITY
COMPARATOR OUTPUT
STATE VS. INPUT
CONDITIONS
C2OE
0
1
0
1
CxPOL
 2010 Microchip Technology Inc.
0
0
1
1
for more details.
C12OUT
C2OUT
C1OUT
C2OUT
CxOUT
I/O
Section 27.0
0
1
1
0