PIC18F4431-E/PT Microchip Technology, PIC18F4431-E/PT Datasheet - Page 205
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: 205 of 396
- Download datasheet (8Mb)
FIGURE 17-20:
17.10.3
Figure 17-21 shows an example of a waveform that
might be generated using the PWM output override
feature. The figure shows a six-step commutation
sequence for a BLDC motor. The motor is driven
through a 3-phase inverter as shown in Figure 17-16.
When the appropriate rotor position is detected, the
PWM outputs are switched to the next commutation
state in the sequence. In this example, the PWM out-
puts are driven to specific logic states. The OVDCOND
and OVDCONS register values used to generate the
signals in Figure 17-21 are given in Table 17-4.
REGISTER 17-6:
2003 Microchip Technology Inc.
POUT0
POUT1
PWM1
PWM0
OUTPUT OVERRIDE EXAMPLES
bit 7-0
Assume: PVOD0 = 0; PVOD1 = 0; PMOD0 = 0
1.
2.
3.
4.
5.
6.
7.
OVERRIDE BITS IN COMPLEMENTARY MODE
OVDCOND: OUTPUT OVERRIDE CONTROL REGISTER
Even override bits have no effect in Complementary mode.
Odd override bit is activated, which causes the even PWM to deactivate.
Dead time insertion.
Odd PWM activated after the dead time.
Odd override bit is deactivated, which causes the odd PWM to deactivate.
Dead time insertion.
Even PWM is activated after the dead time.
POVD7:POVD0: PWM Output Override bits
1 = Output on PWM I/O pin is controlled by the value in the Duty Cycle register and the PWM
0 = Output on PWM I/O pin is controlled by the value in the corresponding POUT bit.
Note
Legend:
R = Readable bit
-n = Value at POR
bit 7
POVD7
R/W-1
time base.
1
(1)
1: Unimplemented in PIC18F2X31 devices; maintain these bits clear.
POVD6
R/W-1
(1)
PIC18F2331/2431/4331/4431
POVD5
R/W-1
Preliminary
W = Writable bit
‘1’ = bit is set
2
POVD4
R/W-1
The PWM Duty Cycle registers may be used in con-
junction with the OVDCOND and OVDCONS registers.
The Duty Cycle registers control the average voltage
across the load and the OVDCOND and OVDCONS
registers
Figure 17-22 shows the waveforms, while Table 17-4
and Table 17-5 show the OVDCOND and OVDCONS
register values used to generate the signals.
3
4
(1)
POVD3
R/W-1
U = Unimplemented bit, read as ‘0’
‘0’ = bit is cleared
control
POVD2
the
R/W-1
commutation
x = bit is unknown
POVD1
R/W-1
DS39616B-page 203
6
5
7
sequence.
POVD0
R/W-1
bit 0
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