PIC18F4431-E/PT Microchip Technology, PIC18F4431-E/PT Datasheet - Page 199
PIC18F4431-E/PT
Manufacturer Part Number
PIC18F4431-E/PT
Description
IC MCU FLASH 8KX16 44TQFP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC16F818-ISO.pdf
(6 pages)
3.PIC18F2331-ISO.pdf
(392 pages)
4.PIC18F2331-ISO.pdf
(8 pages)
5.PIC18F2331-ISO.pdf
(6 pages)
6.PIC18F2331-ISO.pdf
(16 pages)
7.PIC18LF2331-ISO.pdf
(40 pages)
8.PIC18F4431-EPT.pdf
(396 pages)
Specifications of PIC18F4431-E/PT
Core Size
8-Bit
Program Memory Size
16KB (8K x 16)
Oscillator Type
Internal
Core Processor
PIC
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, Power Control PWM, QEI, POR, PWM, WDT
Number Of I /o
36
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 9x10b
Operating Temperature
-40°C ~ 125°C
Package / Case
44-TQFP, 44-VQFP
Controller Family/series
PIC18
No. Of I/o's
36
Eeprom Memory Size
256Byte
Ram Memory Size
768Byte
Cpu Speed
40MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F4431-E/PT
Manufacturer:
JOHANSON
Quantity:
24 000
Company:
Part Number:
PIC18F4431-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
- PIC16F616T-ISL PDF datasheet
- PIC16F818-ISO PDF datasheet #2
- PIC18F2331-ISO PDF datasheet #3
- PIC18F2331-ISO PDF datasheet #4
- PIC18F2331-ISO PDF datasheet #5
- PIC18F2331-ISO PDF datasheet #6
- PIC18LF2331-ISO PDF datasheet #7
- PIC18F4431-EPT PDF datasheet #8
- Current page: 199 of 396
- Download datasheet (8Mb)
FIGURE 17-14:
17.6.4
Center-aligned PWM signals are produced by the
module when the PWM time base is configured in an
Up/Down Counting mode (see Figure 17-15). The
PWM compare output is driven to the active state when
the value of the Duty Cycle register matches the value
of PTMR and the PWM time base is counting
downwards (PTDIR = 1). The PWM compare output
will be driven to the inactive state when the PWM time
base is counting upwards (PTDIR = 0) and the value in
the PTMR register matches the duty cycle value. If the
value in a particular Duty Cycle register is zero, then
the output on the corresponding PWM pin will be
FIGURE 17-15:
2003 Microchip Technology Inc.
Start of
first
PWM
Period
PTPER
Duty
Cycle
0
CENTER-ALIGNED PWM
PWM output
PTMR Value
DUTY CYCLE UPDATE TIMES IN UP/DOWN COUNTING MODE WITH DOUBLE
UPDATES
START OF CENTER-ALIGNED PWM
PTMR
Value
Duty Cycle
Period/2
PIC18F2331/2431/4331/4431
Duty cycle value loaded from buffer register
Period
Preliminary
inactive for the entire PWM period. In addition, the
output on the PWM pin will be active for the entire PWM
period if the value in the Duty Cycle register is equal to
or greater than the value in the PTPER register.
Note:
New values written to duty cycle buffer.
When
Center-aligned mode, the period register
(PTPER) is loaded into the PWM Timer
register (PTMR) and the PTMR is
configured
down-counting. This is done to ensure that
all the PWM signals don’t start at the same
time.
the
Period
automatically
PWM
DS39616B-page 197
is
started
to
start
in
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