PIC18F452I/L Microchip Technology, PIC18F452I/L Datasheet - Page 240
![no-image](/images/manufacturer_photos/0/4/439/microchip_technology_sml.jpg)
PIC18F452I/L
Manufacturer Part Number
PIC18F452I/L
Description
IC, 8BIT MCU, PIC18F, 40MHZ, LCC-44
Manufacturer
Microchip Technology
Datasheet
1.PIC18F242-ISO.pdf
(332 pages)
Specifications of PIC18F452I/L
Controller Family/series
PIC18
No. Of I/o's
34
Eeprom Memory Size
256Byte
Ram Memory Size
1.5KB
Cpu Speed
40MHz
No. Of Timers
4
Core Size
8 Bit
Program Memory Size
16 KWords
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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PIC18FXX2
MULLW
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
DS39564C-page 238
Q Cycle Activity:
Before Instruction
After Instruction
Decode
W
PRODH
PRODL
W
PRODH
PRODL
Q1
Multiply Literal with W
[ label ]
0
(W) x k
None
An unsigned multiplication is car-
ried out between the contents of
W and the 8-bit literal 'k'. The
16-bit result is placed in
PRODH:PRODL register pair.
PRODH contains the high byte.
W is unchanged.
None of the status flags are
affected.
Note that neither overflow nor
carry is possible in this opera-
tion. A zero result is possible but
not detected.
1
1
literal 'k'
MULLW
Read
0000
Q2
=
=
=
=
=
=
k
255
0xE2
?
?
0xE2
0xAD
0x08
0xC4
MULLW
PRODH:PRODL
1101
Process
Data
Q3
kkkk
k
registers
PRODH:
PRODL
Write
Q4
kkkk
MULWF
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
Q Cycle Activity:
Before Instruction
After Instruction
Decode
W
REG
PRODH
PRODL
W
REG
PRODH
PRODL
Q1
register 'f'
Multiply W with f
[ label ]
0
a
(W) x (f)
None
An unsigned multiplication is car-
ried out between the contents of
W and the register file location 'f'.
The 16-bit result is stored in the
PRODH:PRODL register pair.
PRODH contains the high byte.
Both W and 'f' are unchanged.
None of the status flags are
affected.
Note that neither overflow nor
carry is possible in this opera-
tion. A zero result is possible but
not detected. If ‘a’ is 0, the
Access Bank will be selected,
overriding the BSR value. If
‘a’ = 1, then the bank will be
selected as per the BSR value
(default).
1
1
MULWF
Read
0000
Q2
=
=
=
=
=
=
=
=
f
[0,1]
© 2006 Microchip Technology Inc.
255
0xC4
0xB5
?
?
0xC4
0xB5
0x8A
0x94
REG, 1
MULWF
001a
PRODH:PRODL
Process
Data
Q3
ffff
f [,a]
registers
PRODH:
PRODL
Write
Q4
ffff
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