PIC18F6622-E/PT Microchip Technology, PIC18F6622-E/PT Datasheet - Page 186
PIC18F6622-E/PT
Manufacturer Part Number
PIC18F6622-E/PT
Description
IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,TQFP,64PIN,PLASTIC
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.DV164136.pdf
(446 pages)
3.PIC18F8627T-IPT.pdf
(44 pages)
4.PIC18F6527-IPT.pdf
(10 pages)
Specifications of PIC18F6622-E/PT
Core Processor
PIC
Core Size
8-Bit
Speed
25MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
54
Program Memory Size
64KB (32K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
3.8K x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
64-TFQFP
Processor Series
PIC18F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
3936 B
Interface Type
SPI, I2C, EUSART
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
54
Number Of Timers
5
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, PG164120, ICE2000, ICE4000, DV164136, DM183032
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 12 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F6622-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
Part Number:
PIC18F6622-E/PT
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
- PIC16F616T-ISL PDF datasheet
- DV164136 PDF datasheet #2
- PIC18F8627T-IPT PDF datasheet #3
- PIC18F6527-IPT PDF datasheet #4
- Current page: 186 of 446
- Download datasheet (7Mb)
PIC18F8722 FAMILY
17.4
In Pulse-Width Modulation (PWM) mode, the CCPx pin
produces up to a 10-bit resolution PWM output. Since
the CCP4 and CCP5 pins are multiplexed with a
PORTG data latch, the appropriate TRISG bit must be
cleared to make the CCP4 or CCP5 pin an output.
Figure 17-4 shows a simplified block diagram of the
CCP module in PWM mode.
For a step-by-step procedure on how to set up a CCP
module for PWM operation, see Section 17.4.3
“Setup for PWM Operation”.
FIGURE 17-4:
A PWM output (Figure 17-5) has a time base (period)
and a time that the output stays high (duty cycle).
The frequency of the PWM is the inverse of the
period (1/period).
FIGURE 17-5:
DS39646C-page 184
Note 1: The 8-bit TMR2 or TMR4 value is concatenated with the
Note:
CCPRxH (Slave)
TMR2 (TMR4)
Comparator
Duty Cycle Registers
PR2 (PR4)
CCPRxL
TMR2 (TMR4) = PR2 (TMR4)
Comparator
PWM Mode
2-bit internal Q clock, or 2 bits of the prescaler, to cre-
ate the 10-bit time base.
Duty Cycle
Clearing the CCP4CON or CCP5CON
register will force the RG3 or RG4 output
latch (depending on device configuration)
to the default low level. This is not the
PORTG I/O data latch.
Period
(Note 1)
TMR2 (TMR4) = Duty Cycle
Clear Timer,
CCPx pin and
latch D.C.
SIMPLIFIED PWM BLOCK
DIAGRAM
PWM OUTPUT
TMR2 (TMR4) = PR2 (PR4)
CCPxCON<5:4>
R
S
Q
Corresponding
TRIS bit
CCPx Output
17.4.1
The PWM period is specified by writing to the PR2
(PR4) register. The PWM period can be calculated
using the following formula:
EQUATION 17-1:
PWM frequency is defined as 1/[PWM period].
When TMR2 (TMR4) is equal to PR2 (PR4), the
following three events occur on the next increment
cycle:
• TMR2 (TMR4) is cleared
• The CCPx pin is set (exception: if PWM duty
• The PWM duty cycle is latched from CCPRxL into
17.4.2
The PWM duty cycle is specified by writing to the
CCPRxL register and to the CCPxCON<5:4> bits. Up
to 10-bit resolution is available. The CCPRxL contains
the eight MSbs and the CCPxCON<5:4> contains the
two LSbs. This 10-bit value is represented by
CCPRxL:CCPxCON<5:4>. The following equation is
used to calculate the PWM duty cycle in time:
EQUATION 17-2:
CCPRxL and CCPxCON<5:4> can be written to at any
time, but the duty cycle value is not latched into
CCPRxH until after a match between PR2 (PR4) and
TMR2 (TMR4) occurs (i.e., the period is complete). In
PWM mode, CCPRxH is a read-only register.
cycle = 0%, the CCPx pin will not be set)
CCPRxH
Note:
PWM Duty Cycle = (CCPRxL:CCPxCON<5:4>) •
PWM Period = [(PR2) + 1] • 4 • T
PWM PERIOD
The Timer2 and Timer 4 postscalers (see
Section 14.0
Section 16.0 “Timer4 Module”) are not
used in the determination of the PWM
frequency. The postscaler could be used
to have a servo update rate at a different
frequency than the PWM output.
PWM DUTY CYCLE
T
(TMR2 Prescale Value)
OSC
© 2008 Microchip Technology Inc.
“Timer2
• (TMR2 Prescale Value)
Module”
OSC
•
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