PIC18F65K90-I/PTRSL Microchip Technology, PIC18F65K90-I/PTRSL Datasheet - Page 253
![MCU PIC 32K FLASH MEM XLP 64TQFP](/photos/6/81/68123/c04-066_pf_sml.jpg)
PIC18F65K90-I/PTRSL
Manufacturer Part Number
PIC18F65K90-I/PTRSL
Description
MCU PIC 32K FLASH MEM XLP 64TQFP
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Specifications of PIC18F65K90-I/PTRSL
Core Size
8-Bit
Program Memory Size
32KB (16K 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
53
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K 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-TFQFP
Controller Family/series
PIC18
Eeprom Memory Size
1024Byte
Ram Memory Size
2048Byte
Cpu Speed
16MIPS
No. Of Timers
8
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F65K90-I/PTRSL
Manufacturer:
Microchip Technology
Quantity:
10 000
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19.2
In Capture mode, the CCPRxH:CCPRxL register pair
captures the 16-bit value of the TMR1 or TMR3
registers when an event occurs on the corresponding
ECCPx pin. An event is defined as one of the following:
• Every falling edge
• Every rising edge
• Every fourth rising edge
• Every 16
The event is selected by the mode select bits,
CCPxM<3:0> (CCPxCON register<3:0>). When a
capture is made, the interrupt request flag bit, CCPxIF,
is set (see Table 19-2). The flag must be cleared by
software. If another capture occurs before the value in
the CCPRxH/L register is read, the old captured value
is overwritten by the new captured value.
TABLE 19-2:
19.2.1
In Capture mode, the appropriate ECCPx pin should be
configured as an input by setting the corresponding
TRIS direction bit.
FIGURE 19-1:
2010 Microchip Technology Inc.
ECCP Module
Note:
ECCP1 Pin
1
2
3
Capture Mode
th
ECCP PIN CONFIGURATION
If the ECCPx pin is configured as an out-
put, a write to the port can cause a capture
condition.
rising edge
ECCP1/2/3 INTERRUPT FLAG
BITS
CCP1CON<3:0>
Prescaler
1, 4, 16
CAPTURE MODE OPERATION BLOCK DIAGRAM
Q1:Q4
PIR3<1>
PIR3<2>
PIR4<0>
Flag Bit
4
Edge Detect
4
and
Set CCP1IF
Preliminary
C1TSEL0
C1TSEL1
C1TSEL2
C1TSEL0
C1TSEL1
C1TSEL2
PIC18F87K90 FAMILY
19.2.2
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
Counter mode, the capture operation may not work.
The timer to be used with each ECCP module is
selected in the CCPTMRS0 register (Register 19-2).
19.2.3
When the Capture mode is changed, a false capture
interrupt may be generated. The user should keep the
CCPxIE interrupt enable bit clear to avoid false interrupts.
The interrupt flag bit, CCPxIF, should also be cleared
following any such change in operating mode.
19.2.4
There are four prescaler settings in Capture mode; they
are specified as part of the operating mode selected by
the mode select bits (CCPxM<3:0>). Whenever the
ECCP 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 19-1 provides the
recommended method for switching between capture
prescalers. This example also clears the prescaler
counter and will not generate the “false” interrupt.
EXAMPLE 19-1:
CLRF
MOVLW
MOVWF
CCP1CON
NEW_CAPT_PS ; Load WREG with the
CCP1CON
TIMER1/TIMER3 MODE SELECTION
SOFTWARE INTERRUPT
ECCP PRESCALER
CHANGING BETWEEN
CAPTURE PRESCALERS
; Turn ECCP module off
; new prescaler mode
; value and ECCP ON
; Load CCP1CON with
; this value
TMR3
Enable
TMR1
Enable
CCPR1H
TMR3H
TMR1H
DS39957B-page 253
CCPR1L
TMR1L
TMR3L
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