PIC18LF25J11-I/ML Microchip Technology, PIC18LF25J11-I/ML Datasheet - Page 90
![IC PIC MCU FLASH 32K 2V 28-QFN](/photos/6/81/68120/150-28-qfn_sml.jpg)
PIC18LF25J11-I/ML
Manufacturer Part Number
PIC18LF25J11-I/ML
Description
IC PIC MCU FLASH 32K 2V 28-QFN
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheets
1.MA180023.pdf
(528 pages)
2.PIC18LF24J10-ISS.pdf
(32 pages)
3.PIC18F24J11-ISS.pdf
(14 pages)
Specifications of PIC18LF25J11-I/ML
Program Memory Type
FLASH
Program Memory Size
32KB (16K x 16)
Package / Case
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
Core Processor
PIC
Core Size
8-Bit
Speed
48MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
16
Ram Size
3.8K x 8
Voltage - Supply (vcc/vdd)
2 V ~ 3.6 V
Data Converters
A/D 10x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC18LF
Core
PIC
Data Bus Width
8 bit
Data Ram Size
4 KB
Interface Type
EUSART, I2C, SPI
Maximum Clock Frequency
31 KHz
Number Of Programmable I/os
16
Number Of Timers
5
Operating Supply Voltage
2 V to 3.6 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
PG164130, DV164035, DV244005, DV164005, PG164120, DM183022, DM183032, DV164136, MA180023
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 10 Channel
A/d Bit Size
10 bit
A/d Channels Available
10
Height
0.88 mm
Length
6 mm
Supply Voltage (max)
2.75 V, 3.6 V
Supply Voltage (min)
2 V
Width
6 mm
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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PIC18F46J11 FAMILY
5.4
While the program memory can be addressed in only
one way, through the PC, information in the data
memory space can be addressed in several ways. For
most instructions, the addressing mode is fixed. Other
instructions may use up to three modes, depending on
which operands are used and whether or not the
extended instruction set is enabled.
The addressing modes are:
• Inherent
• Literal
• Direct
• Indirect
An additional addressing mode, Indexed Literal Offset,
is available when the extended instruction set is
enabled (XINST Configuration bit = 1). Its operation is
discussed in more detail in Section 5.6.1 “Indexed
Addressing with Literal Offset”.
5.4.1
Many PIC18 control instructions do not need any
argument at all; they either perform an operation that
globally affects the device, or they operate implicitly on
one register. This addressing mode is known as
Inherent Addressing. Examples include SLEEP, RESET
and DAW.
Other instructions work in a similar way, but require an
additional explicit argument in the opcode. This is
known as Literal Addressing mode, because they
require some literal value as an argument. Examples
include ADDLW and MOVLW, which respectively, add or
move a literal value to the W register. Other examples
include CALL and GOTO, which include a 20-bit
program memory address.
5.4.2
Direct Addressing specifies all or part of the source
and/or destination address of the operation within the
opcode itself. The options are specified by the
arguments accompanying the instruction.
In the core PIC18 instruction set, bit-oriented and
byte-oriented instructions use some version of Direct
Addressing by default. All of these instructions include
some 8-bit Literal Address as their LSB. This address
specifies either a register address in one of the banks
of data RAM (Section 5.3.3 “General Purpose
DS39932C-page 90
Note:
Data Addressing Modes
The execution of some instructions in the
core PIC18 instruction set is changed when
the PIC18 extended instruction set is
enabled. See Section 5.6 “Data Memory
and the Extended Instruction Set” for
more information.
INHERENT AND LITERAL
ADDRESSING
DIRECT ADDRESSING
Register File”), or a location in the Access Bank
(Section 5.3.2 “Access Bank”) as the data source for
the instruction.
The Access RAM bit, ‘a’, determines how the address
is interpreted. When ‘a’ is ‘1’, the contents of the BSR
(Section 5.3.1 “Bank Select Register”) are used with
the address to determine the complete 12-bit address
of the register. When ‘a’ is ‘0’, the address is interpreted
as being a register in the Access Bank. Addressing that
uses the Access RAM is sometimes also known as
Direct Forced Addressing mode.
A few instructions, such as MOVFF, include the entire
12-bit address (either source or destination) in their
opcodes. In these cases, the BSR is ignored entirely.
The destination of the operation’s results is determined
by the destination bit, ‘d’. When ‘d’ is ‘1’, the results are
stored back in the source register, overwriting its
original contents. When ‘d’ is ‘0’, the results are stored
in the W register. Instructions without the ‘d’ argument
have a destination that is implicit in the instruction; their
destination is either the target register being operated
on or the W register.
5.4.3
Indirect Addressing allows the user to access a location
in data memory without giving a fixed address in the
instruction. This is done by using File Select Registers
(FSRs) as pointers to the locations to be read or written
to. Since the FSRs are themselves located in RAM as
SFRs, they can also be directly manipulated under
program control. This makes FSRs very useful in
implementing data structures such as tables and arrays
in data memory.
The registers for Indirect Addressing are also
implemented with Indirect File Operands (INDFs) that
permit automatic manipulation of the pointer value with
auto-incrementing, auto-decrementing or offsetting
with another value. This allows for efficient code using
loops, such as the example of clearing an entire RAM
bank in Example 5-5. It also enables users to perform
Indexed
operations for program memory in data memory.
EXAMPLE 5-5:
NEXT
CONTINUE
LFSR
CLRF
BTFSS
BRA
Addressing
INDIRECT ADDRESSING
FSR0, 100h ;
POSTINC0
FSR0H, 1
NEXT
HOW TO CLEAR RAM
(BANK 1) USING INDIRECT
ADDRESSING
© 2009 Microchip Technology Inc.
and
other
; Clear INDF
; register then
; inc pointer
; All done with
; Bank1?
; NO, clear next
; YES, continue
Stack
Pointer
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