PIC18F2431-E/MM Microchip Technology, PIC18F2431-E/MM Datasheet - Page 310

• Manufacturer Part Number: PIC18F2431-E/MM
• Description: 16 KB Flash, 768 RAM, 22 I/O 28 QFN-S 6x6m TUBE
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F2431-E/MM

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, Power Control PWM, QEI, POR, PWM, WDT
• Number Of I /o: 24
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 28-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: PIC18F2431-E/ML; PIC18F2431-E/ML

PIC18F2331/2431/4331/4431
MULLW
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
DS39616D-page 310
Q Cycle Activity:
Before Instruction
After Instruction
Decode
W
PRODH
PRODL
W
PRODH
PRODL
Q1
literal ‘k’
Multiply Literal with W
[ label ]
0  k  255
(W) x k  PRODH:PRODL
None
An unsigned multiplication is carried
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 operation. A Zero
result is possible but not detected.
1
1
MULLW
Read
0000
Q2
=
=
=
=
=
=
0xE2
?
?
0xE2
0xAD
0x08
MULLW
0xC4
1101
Process
Data
Q3
k
kkkk
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  f  255
a  [0,1]
(W) x (f)  PRODH:PRODL
None
An unsigned multiplication is carried
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 operation. 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.
1
1
MULWF
Read
0000
Q2
=
=
=
=
=
=
=
=
 2010 Microchip Technology Inc.
0xC4
0xB5
?
?
0xC4
0xB5
0x8A
0x94
MULWF
REG
001a
Process
Data
Q3
f [,a]
ffff
PRODH:
registers
PRODL
Write
Q4
ffff