PIC18F4439-E/PT Microchip Technology, PIC18F4439-E/PT Datasheet - Page 116
![IC PIC MCU FLASH 6KX16 44TQFP](/photos/6/82/68251/c04-076_pt_sml.jpg)
PIC18F4439-E/PT
Manufacturer Part Number
PIC18F4439-E/PT
Description
IC PIC MCU FLASH 6KX16 44TQFP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC18F2439-ISO.pdf
(322 pages)
3.PIC18F2439-ISO.pdf
(6 pages)
4.PIC18F2439-ISO.pdf
(34 pages)
Specifications of PIC18F4439-E/PT
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LVD, POR, PWM, WDT
Number Of I /o
32
Program Memory Size
12KB (6K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
640 x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
44-TQFP, 44-VQFP
Processor Series
PIC18F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
640 B
Interface Type
I2C, SPI, AUSART
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
32
Number Of Timers
16 bit
Operating Supply Voltage
2 V to 5.5 V
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
DV164005, DV164136
Minimum Operating Temperature
- 40 C
On-chip Adc
8
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F4439-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
- PIC16F616T-ISL PDF datasheet
- PIC18F2439-ISO PDF datasheet #2
- PIC18F2439-ISO PDF datasheet #3
- PIC18F2439-ISO PDF datasheet #4
- Current page: 116 of 322
- Download datasheet (7Mb)
PIC18FXX39
14.3
A sine table, stored in the ProMPT kernel, is used as
the basis for synthesizing the DC bus using the PWM
modules. The table values are accessed in sequence
and scaled based on the frequency or the speed at
which the motor is intended to run. The intended fre-
quency input can be from an A/D channel or a digital
value.
Parameters in the ProMPT modules can be accessed
using the pre-defined Application Program Interface
(API) methods. A list of the APIs is given in
Section 14.3.3.
For example, to run the motor at 40 Hz, the user would
invoke the PromMPT_SetFrequency API:
i = ProMPT_SetFrequency(40);
where i is an unsigned character variable. In this case,
if i = 0 on return, the command has been successfully
executed. If the frequency input is out of range, or if
there is an error in setting the frequency, i is returned
with a value of FFh.
Similarly, to check the frequency set by the ProMPT
kernel, use the ProMPT_GetFrequency API:
i = ProMPT_GetFrequency(void);
where i is an unsigned character variable. Upon return
from the ProMPT kernel, i will contain the frequency
value in the ProMPT kernel.
14.3.1
The ProMPT kernel contains a default V/F curve stored
in memory. The default curve is linear, as shown in
Figure 14-2. Table 14-1 shows the data points used to
construct the curve.
Users may require a different V/F curve for their appli-
cation, based on the load on the motor, or based on the
characteristics of the motor used. The curve can be
changed in the application program using the API
method SetVFCurve(X,Y), where X is the frequency
and Y is the level of modulation of the DC bus voltage.
As a rule, in customizing the curve, the input frequency
corresponding to the point on the V/F curve that gives
100% modulation should match the motor’s rated fre-
quency. Similarly, full modulation should occur at the
motor’s rated input voltage. (See Figure 14-2 for
details.)
Examples of the characteristics for V/F curves for typi-
cal motor applications are shown in Section 14-2
(page 115).
14.3.2
Frequency: The frequency (in Hz) of the supply
current for steady state motor operation.
Modulation: The level of modulation (in percentage)
applied to the DC supply voltage by the PWM through
the H-bridge to produce AC drive current.
DS30485A-page 114
Software Interface
THE V/F CURVE
PARAMETERS DEFINED BY THE
ProMPT API METHODS
Preliminary
Acceleration rate: The rate of increase of motor
speed, achieved by ramping up the supply frequency.
Expressed in Hz/s.
Deceleration rate: The rate of decrease of motor
speed, achieved by ramping down the supply
frequency. Expressed in Hz/s.
Boost: The mode for starting a stopped motor by vary-
ing the supply current frequency and modulation until
steady state speed is reached. Boost is defined in
terms of a frequency, a starting and ending modulation,
and a time interval for the transition between the two.
PWM Frequency: The sampling rate (in kHz) at which
the PWM module operates.
FIGURE 14-2:
TABLE 14-1:
150
125
100
Frequency (Hz)
75
50
25
0
0
V
should equal
at 100% modulation
104
112
120
128
rated
16
24
32
40
48
56
64
72
80
88
96
0
8
20
of motor
DATA POINTS FOR THE
DEFAULT V/F CURVE
40
Input Frequency (Hz)
DEFAULT V/F CURVE FOR
THE ProMPT KERNEL
2002 Microchip Technology Inc.
60
80
% Modulation
f
should equal f at
100% modulation
rated
100
100
133
133
133
133
133
133
133
133
110
14
28
42
57
71
86
of motor
0
120
140
Related parts for PIC18F4439-E/PT
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![PIC18F-LF1XK50](/images/no-image3.png)
Part Number:
Description:
20-Pin USB Flash Microcontrollers
Manufacturer:
MICROCHIP [Microchip Technology]
Datasheet:
![PIC18F6393T-I/PT](/photos/6/81/68123/c04-066_pf_tmb.jpg)
Part Number:
Description:
PIC18F With 128-segment LCD Driver And 12-bit ADC, 8KB Flash, 768B RAM, CCP, MSS
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F6493T-I/PT](/photos/6/81/68123/c04-066_pf_tmb.jpg)
Part Number:
Description:
PIC18F With 128-segment LCD Driver And 12-bit ADC, 16KB Flash, 768B RAM, CCP, MS
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F8393T-I/PT](/images/manufacturer_photos/0/4/439/microchip_technology_tmb.jpg)
Part Number:
Description:
PIC18F With 192-segment LCD Driver And 12-bit ADC, 8KB Flash, 768B RAM, CCP, MSS
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F8493T-I/PT](/images/manufacturer_photos/0/4/439/microchip_technology_tmb.jpg)
Part Number:
Description:
PIC18F With 192-segment LCD Driver And 12-bit ADC, 16KB Flash, 768B RAM, CCP, MS
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F6585-I/L](/photos/16/12/161282/68-plcc-large-300dpi-lyrd_tmb.jpg)
Part Number:
Description:
Microcontrollers (MCU) 48KB 3328 RAM 52 I/O
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F6680-I/L](/photos/16/12/161282/68-plcc-large-300dpi-lyrd_tmb.jpg)
Part Number:
Description:
Microcontrollers (MCU) 64KB 3328 RAM 52 I/O
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F65K90T-I/MR](/photos/16/3/160368/qfn64_tmb.jpg)
Part Number:
Description:
32kB Flash, 2kB RAM, 1kB EE, NanoWatt XLP, LCD 64 QFN 9x9x0.9mm T/R
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F65K90T-I/PT](/photos/16/3/160367/tqfp-64_tmb.jpg)
Part Number:
Description:
32kB Flash, 2kB RAM, 1kB EE, NanoWatt XLP, LCD 64 TQFP 10x10x1mm T/R
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F87K90T-I/PT](/photos/40/31/403173/tqfp-80_tmb.jpg)
Part Number:
Description:
128kB Flash, 4kB RAM, 1kB EE, 16MIPS, NanoWatt XLP, LCD, 5V 80 TQFP 12x12x1mm T/
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F65K90-I/MR](/photos/16/3/160368/qfn64_tmb.jpg)
Part Number:
Description:
32kB Flash, 2kB RAM, 1kB EE, NanoWatt XLP, LCD 64 QFN 9x9x0.9mm TUBE
Manufacturer:
Microchip Technology
Datasheet:
![PIC18F65K90-I/PT](/photos/16/3/160367/tqfp-64_tmb.jpg)
Part Number:
Description:
32kB Flash, 2kB RAM, 1kB EE, NanoWatt XLP, LCD 64 TQFP 10x10x1mm TRAY
Manufacturer:
Microchip Technology
![PIC18F87K90-I/PT](/photos/40/31/403173/tqfp-80_tmb.jpg)
Part Number:
Description:
128kB Flash, 4kB RAM, 1kB EE, 16MIPS, NanoWatt XLP, LCD, 5V 80 TQFP 12x12x1mm TR
Manufacturer:
Microchip Technology