PIC18F2X1X/4X1X
1.2
Other Special Features
1.3
•
Memory Endurance:
The Flash cells for program
memory are rated to 100,000 erase/write cycles.
Data retention without refresh is conservatively
estimated to be greater than 40 years.
•
Extended Instruction Set:
The PIC18F2X1X/
4X1X family introduces an optional extension to
the PIC18 instruction set, which adds 8 new
instructions and an Indexed Addressing mode.
This extension, enabled as a device configuration
option, has been specifically designed to optimize
re-entrant application code originally developed in
high-level languages, such as C.
•
Enhanced CCP Module:
In PWM mode, this
module provides 1, 2 or 4 modulated outputs for
controlling half-bridge and full-bridge drivers.
Other features include Auto-Shutdown, for
disabling PWM outputs on interrupt or other select
conditions and Auto-Restart, to reactivate outputs
once the condition has cleared.
•
Enhanced Addressable USART:
This serial
communication module is capable of standard
RS-232 operation and provides support for the LIN
bus protocol. Other enhancements include auto-
matic baud rate detection and a 16-bit Baud Rate
Generator for improved resolution. When the
microcontroller is using the internal oscillator
block, the USART provides stable operation for
applications that talk to the outside world without
using an external crystal (or its accompanying
power requirement).
•
10-bit A/D Converter:
This module incorporates
programmable acquisition time, allowing for a
channel to be selected and a conversion to be
initiated without waiting for a sampling period and
thus, reduce code overhead.
•
Extended Watchdog Timer (WDT):
This
enhanced version incorporates a 16-bit prescaler,
allowing an extended time-out range that is stable
across operating voltage and temperature. See
for
time-out periods.
Details on Individual Family
Members
Devices in the PIC18F2X1X/4X1X family are available
in 28-pin and 40/44-pin 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 five
ways:
1.
Flash program memory
• 16 Kbytes for PIC18F2410/4410 devices
• 32 Kbytes for PIC18F2510/4510 devices
• 48 Kbytes for PIC18F2515/4515 devices
• 64 Kbytes for PIC18F2610/4610 devices
A/D channels (10 for 28-pin devices, 13 for
40/44-pin devices).
I/O ports (3 bidirectional ports on 28-pin devices,
5 bidirectional ports on 40/44-pin devices).
CCP and Enhanced CCP implementation (28-pin
devices have 2 standard CCP modules; 40/44-pin
devices have one standard CCP module and one
ECCP module).
Parallel Slave Port (present only on 40/44-pin
devices).
2.
3.
4.
5.
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 1-3 and
Like all Microchip PIC18 devices, members of the
PIC18F2X1X/4X1X family are available as both
standard and low-voltage devices. Standard devices
with Flash memory, designated with an “F” in the part
number (such as PIC18F2610), accommodate an
operating V
DD
range of 4.2V to 5.5V. Low-voltage
parts, designated by “LF” (such as PIC18LF2610),
function over an extended V
DD
range of 2.0V to 5.5V.
DS39636D-page 10
©
2009 Microchip Technology Inc.
MICROCHIP [ MICROCHIP TECHNOLOGY ]
