PIC18LF14K22-E/ML Microchip Technology, PIC18LF14K22-E/ML Datasheet - Page 115
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PIC18LF14K22-E/ML
Manufacturer Part Number
PIC18LF14K22-E/ML
Description
16KB Flash, 512bytes RAM, 256bytes EEPROM, 16MIPS, NanoWatt XLP 20 QFN 4x4mm TUB
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheet
1.PIC18LF13K22-ISS.pdf
(388 pages)
Specifications of PIC18LF14K22-E/ML
Core Processor
PIC
Core Size
8-Bit
Speed
48MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
17
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 3.6 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
20-VQFN Exposed Pad, 20-HVQFN, 20-SQFN, 20-DHVQFN
Processor Series
PIC18LF
Core
PIC
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
EUSART, I2C, SPI
Maximum Clock Frequency
32 KHz
Number Of Programmable I/os
18
Number Of Timers
4
Operating Supply Voltage
1.8 V to 3.6 V
Maximum Operating Temperature
+ 125 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, 12 Channel
A/d Bit Size
10 bit
A/d Channels Available
12
Height
0.88 mm
Length
4 mm
Supply Voltage (max)
3.6 V
Supply Voltage (min)
1.8 V, 2.7 V
Width
4 mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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13.2
In Capture mode, the CCPR1H:CCPR1L register pair
captures the 16-bit value of the TMR1 or TMR3
registers when an event occurs on the corresponding
CCP1 pin. An event is defined as one of the following:
• every falling edge
• every rising edge
• every 4th rising edge
• every 16th rising edge
The event is selected by the mode select bits,
CCP1M<3:0> of the CCP1CON register. When a cap-
ture is made, the interrupt request flag bit, CCP1IF, is
set; it must be cleared by software. If another capture
occurs before the value in register CCPR1 is read, the
old captured value is overwritten by the new captured
value.
13.2.1
In Capture mode, the appropriate CCP1 pin should be
configured as an input by setting the corresponding
TRIS direction bit.
13.2.2
The timers that are to be used with the capture feature
(Timer1 and/or Timer3) must be running in Timer mode
or Synchronized Counter mode. In Asynchronous Coun-
ter mode, the capture operation may not work. The timer
FIGURE 13-1:
2010 Microchip Technology Inc.
Note:
Capture Mode
CCP PIN CONFIGURATION
If the CCP1 pin is configured as an output,
a write to the port can cause a capture
condition.
TIMER1/TIMER3 MODE SELECTION
CCP1 pin
CAPTURE MODE OPERATION BLOCK DIAGRAM
CCP1CON<3:0>
Prescaler
1, 4, 16
Q1:Q4
4
Edge Detect
4
and
Preliminary
Set CCP1IF
PIC18F1XK22/LF1XK22
T3CCP1
T3CCP1
to be used with each CCP module is selected in the
T3CON register (see Section 13.1.1 “CCP Module and
Timer Resources”).
13.2.3
When the Capture mode is changed, a false capture
interrupt may be generated. The user should keep the
CCP1IE interrupt enable bit clear to avoid false inter-
rupts. The interrupt flag bit, CCP1IF, should also be
cleared following any such change in operating mode.
13.2.4
There are four prescaler settings in Capture mode; they
are specified as part of the operating mode selected by
the mode select bits (CCP1M<3:0>). Whenever the
CCP module is turned off or Capture mode is disabled,
the prescaler counter is cleared. This means that any
Reset will clear the prescaler counter.
Switching from one capture prescaler to another may
generate an interrupt. Also, the prescaler counter will
not be cleared; therefore, the first capture may be from
a non-zero prescaler. Example 13-1 shows the
recommended method for switching between capture
prescalers. This example also clears the prescaler
counter and will not generate the “false” interrupt.
EXAMPLE 13-1:
CLRF
MOVLW
MOVWF
CCP1CON
NEW_CAPT_PS ; Load WREG with the
CCP1CON
SOFTWARE INTERRUPT
CCP PRESCALER
TMR3
Enable
TMR1
Enable
CCPR1H
TMR3H
TMR1H
CHANGING BETWEEN
CAPTURE PRESCALERS
; Turn CCP module off
; new prescaler mode
; value and CCP ON
; Load CCP1CON with
; this value
CCPR1L
TMR1L
TMR3L
DS41365D-page 115
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