PIC18FXX39 Datasheet, PDF (7/322 Pages) Microchip Technology – Enhanced FLASH Microcontrollers with Single Phase Induction Motor Control Kernel

1.0 DEVICE OVERVIEW
This document contains device specific information for
the following devices:
• PIC18F2439
• PIC18F2539
• PIC18F4439
• PIC18F4539
This family offers the advantages of all PIC18 micro-
controllers - namely, high computational performance
at an economical price - with the addition of high-endur-
ance Enhanced FLASH program memory. The
PIC18FXX39 family also provides an off-the-shelf solu-
tion for simple motor control applications, allowing
users to create speed control solutions with small part
counts and short development times.
1.1 Key Features
1.1.1
PROGRAMMABLE MOTOR
PROCESSOR TECHNOLOGY
(ProMPT™) MOTOR CONTROL
The integrated motor control kernel uses on-chip Pulse
Width Modulation (PWM) to provide speed control for
single phase induction motors. Through a convenient
set of Application Program Interfaces (APIs) and vari-
able frequency technology for open loop control, users
can develop applications with little or no previous expe-
rience in motor control techniques. ProMPT motor con-
trol provides modulated output over a range of 0 to
127 Hz, and has a pre-defined V/F curve that can be
reprogrammed to suit the application.
1.1.2 OTHER PIC18FXX39 FEATURES
• Memory Endurance: The Enhanced FLASH cells
for both program memory and data EEPROM are
rated to last for many thousands of erase/write
cycles - up to 100,000 for program memory, and
1,000,000 for EEPROM. Data retention without
refresh is conservatively estimated to be greater
than 100 years at 25°C.
• Self-programmability: These devices can write to
their own program memory spaces under internal
software control. By using a bootloader routine
located in the protected Boot Block at the top of pro-
gram memory, it becomes possible to create an
application that can update itself in the field.
• Addressable USART: This serial communication
module is capable of standard RS-232 operation
using the internal oscillator block, removing the
need for an external crystal (and its accompanying
power requirement) in applications that talk to the
outside world.
• 10-bit A/D Converter: This module offers up to
8 conversion channels for flexibility in sensor
monitoring and control, as well as the ability to do
conversions while the device is in SLEEP mode.
PIC18FXX39
1.2 Details on Individual Family
Members
Devices in the PIC18FXX39 family are available in
28-pin (PIC18F2X39) and 40/44-pin (PIC18F4X39)
packages. Block diagrams for the two groups are
shown in Figure 1-1 and Figure 1-2.
The devices are differentiated from each other in four
ways:
1. FLASH program memory and data RAM
(12 Kbytes and 640 bytes for PIC18FX439
devices, 24 Kbytes and 1408 bytes for
PIC18FX539)
2. A/D channels (5 for PIC18F2X39 devices, 8 for
PIC18F4X39)
3. I/O ports (3 ports on PIC18F2X39, 5 ports on
PIC18F4X39 devices)
4. Parallel Slave Port (present only on
PIC18F4X39 devices)
All other features for devices in this family are identical.
These are summarized in Table 1-1.
The pinouts for all devices are listed in Table 1-2 and
Table 1-3.
 2002-2013 Microchip Technology Inc.
Preliminary
DS30485B-page 7