PIC18F4550-I/ML Microchip Technology Inc., PIC18F4550-I/ML Datasheet - Page 237
PIC18F4550-I/ML
Manufacturer Part Number
PIC18F4550-I/ML
Description
44 PIN, 32 KB FLASH, 2048 RAM, FS-USB 2.0
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC18F4550-IML.pdf
(320 pages)
Specifications of PIC18F4550-I/ML
A/d Inputs
13-Channel, 10-Bit
Comparators
2
Cpu Speed
12 MIPS
Eeprom Memory
256 Bytes
Input Output
34
Interface
I2C/SPI/UART/USART/USB
Memory Type
Flash
Number Of Bits
8
Package Type
44-pin QFN
Programmable Memory
32K Bytes
Ram Size
2K Bytes
Speed
48 MHz
Timers
1-8-bit, 3-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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LFSR
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
© 2006 Microchip Technology Inc.
Q Cycle Activity:
After Instruction
Decode
Decode
Q1
FSR2H
FSR2L
Read literal
Read literal
‘k’ MSB
‘k’ LSB
Load FSR
LFSR f, k
0
0
k
None
The 12-bit literal ‘k’ is loaded into the
File Select Register pointed to by ‘f’.
2
2
LFSR 2, 3ABh
Q2
1110
1111
=
=
f
k
FSRf
2
4095
03h
ABh
Process
Process
1110
0000
Data
Data
Q3
k
00ff
7
Write literal ‘k’
kkk
literal ‘k’ MSB
to FSRfH
to FSRfL
Advance Information
Write
Q4
k
kkkk
11
kkk
MOVF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
Q Cycle Activity:
Before Instruction
After Instruction
Decode
REG
W
REG
W
PIC18F2450/4450
Q1
register ‘f’
Move f
MOVF
0
d
a
f
N, Z
The contents of register ‘f’ are moved to
a destination dependent upon the
status of ‘d’. If ‘d’ is ‘0’, the result is
placed in W. If ‘d’ is ‘1’, the result is
placed back in register ‘f’ (default).
Location ‘f’ can be anywhere in the
256-byte bank.
If ‘a’ is ‘0’, the Access Bank is selected.
If ‘a’ is ‘1’, the BSR is used to select the
GPR bank (default).
If ‘a’ is ‘0’ and the extended instruction
set is enabled, this instruction operates
in Indexed Literal Offset Addressing
mode whenever f
Section 19.2.3 “Byte-Oriented and
Bit-Oriented Instructions in Indexed
Literal Offset Mode” for details.
1
1
MOVF
Read
0101
Q2
=
=
=
=
f
[0,1]
[0,1]
dest
255
22h
FFh
22h
22h
f {,d {,a}}
REG, 0, 0
00da
Process
Data
Q3
DS39760A-page 235
95 (5Fh). See
ffff
Write W
Q4
ffff
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