PIC18F85K22-I/PT Microchip Technology, PIC18F85K22-I/PT Datasheet - Page 264

• Manufacturer Part Number: PIC18F85K22-I/PT
• Description: IC, 8BIT MCU, PIC18F, 64MHZ, TQFP-80
• Manufacturer: Microchip Technology
• Series: PIC® XLP™ 18Fr

Specifications of PIC18F85K22-I/PT

• Controller Family/series: PIC18
• No. Of I/o's: 69
• Eeprom Memory Size: 1KB
• Ram Memory Size: 2KB
• Cpu Speed: 64MHz
• No. Of Timers: 8
• Core Size: 8 Bit
• Program Memory Size: 32KB
• Core Processor: PIC
• Speed: 64MHz
• Connectivity: EBI/EMI, I²C, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, POR, PWM, WDT
• Number Of I /o: 69
• 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 24x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 80-TQFP
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC18F87K22 FAMILY
20.3
In Compare mode, the 16-bit CCPRx register value is
constantly compared against the Timer register pair
value selected in the CCPTMR1 register. When a
match occurs, the ECCPx pin can be:
• Driven high
• Driven low
• Toggled (high-to-low or low-to-high)
• Unchanged (that is, reflecting the state of the I/O
The action on the pin is based on the value of the mode
select bits (CCPxM<3:0>). At the same time, the
interrupt flag bit, CCPxIF, is set.
20.3.1
Users must configure the ECCPx pin as an output by
clearing the appropriate TRIS bit.
FIGURE 20-2:
DS39960D-page 264
latch)
Note:
Compare Mode
ECCP PIN CONFIGURATION
Clearing the CCPxCON register will force
the
(depending on device configuration) to the
default low level. This is not the PORTx
I/O data latch.
0
1
ECCPx
COMPARE MODE OPERATION BLOCK DIAGRAM
CCPR1H
TMR1H
TMR3H
C1TSEL0
C1TSEL1
C1TSEL2
Comparator
compare
CCPR1L
TMR1L
TMR3L
output
Compare
Match
latch
Set CCP1IF
(Timer1/Timer3 Reset, A/D Trigger)
20.3.2
Timer1 2, 3, 4, 6, 8, 10 or 12 must be running in Timer
mode or Synchronized Counter mode if the ECCP
module is using the compare feature. In Asynchronous
Counter mode, the compare operation will not work
reliably.
20.3.3
When the Generate Software Interrupt mode is chosen
(CCPxM<3:0> = 1010), the ECCPx pin is not affected;
only the CCPxIF interrupt flag is affected.
20.3.4
The ECCP module is equipped with a Special Event
Trigger. This is an internal hardware signal generated
in Compare mode to trigger actions by other modules.
The Special Event Trigger is enabled by selecting
the
(CCPxM<3:0> = 1011).
The Special Event Trigger resets the Timer register pair
for whichever timer resource is currently assigned as the
module’s time base. This allows the CCPRx registers to
serve as a programmable Period register for either timer.
The Special Event Trigger can also start an A/D conver-
sion. In order to do this, the A/D Converter must
already be enabled.
Special Event Trigger
CCP1CON<3:0>
Compare
Output
Logic
4
TIMER1/2/3/4/6/8/10/12 MODE
SELECTION
SOFTWARE INTERRUPT MODE
SPECIAL EVENT TRIGGER
Special
 2009-2011 Microchip Technology Inc.
S
R
Q
Output Enable
Event
TRIS
ECCP1 Pin
Trigger
mode