PIC18F4510-I/ML Microchip Technology, PIC18F4510-I/ML Datasheet - Page 79
![IC MCU FLASH 16KX16 44QFN](/photos/6/81/68122/150-44-qfn_sml.jpg)
PIC18F4510-I/ML
Manufacturer Part Number
PIC18F4510-I/ML
Description
IC MCU FLASH 16KX16 44QFN
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC18F2221-ISO.pdf
(46 pages)
3.PIC18LF2410-ISO.pdf
(376 pages)
4.PIC18LF2410-ISO.pdf
(8 pages)
5.PIC18LF2410-ISO.pdf
(16 pages)
6.PIC18LF2410-ISO.pdf
(6 pages)
7.PIC18LF2410-ISO.pdf
(6 pages)
8.PIC18LF2410-ISO.pdf
(8 pages)
Specifications of PIC18F4510-I/ML
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
36
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 13x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-QFN
For Use With
I3DB18F4620 - BOARD DAUGHTER ICEPIC3
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F4510-I/ML
Manufacturer:
Microchip Technology
Quantity:
135
- PIC16F616T-ISL PDF datasheet
- PIC18F2221-ISO PDF datasheet #2
- PIC18LF2410-ISO PDF datasheet #3
- PIC18LF2410-ISO PDF datasheet #4
- PIC18LF2410-ISO PDF datasheet #5
- PIC18LF2410-ISO PDF datasheet #6
- PIC18LF2410-ISO PDF datasheet #7
- PIC18LF2410-ISO PDF datasheet #8
- Current page: 79 of 376
- Download datasheet (7Mb)
7.0
7.1
All PIC18 devices include an 8 x 8 hardware multiplier
as part of the ALU. The multiplier performs an unsigned
operation and yields a 16-bit result that is stored in the
product register pair, PRODH:PRODL. The multiplier’s
operation does not affect any flags in the STATUS
register.
Making multiplication a hardware operation allows it to
be completed in a single instruction cycle. This has the
advantages of higher computational throughput and
reduced code size for multiplication algorithms and
allows the PIC18 devices to be used in many applica-
tions previously reserved for digital signal processors.
A comparison of various hardware and software
multiply operations, along with the savings in memory
and execution time, is shown in Table 7-1.
7.2
Example 7-1 shows the instruction sequence for an 8 x 8
unsigned multiplication. Only one instruction is required
when one of the arguments is already loaded in the
WREG register.
Example 7-2 shows the sequence to do an 8 x 8 signed
multiplication. To account for the sign bits of the argu-
ments, each argument’s Most Significant bit (MSb) is
tested and the appropriate subtractions are done.
TABLE 7-1:
© 2009 Microchip Technology Inc.
16 x 16 unsigned
8 x 8 unsigned
16 x 16 signed
8 x 8 signed
Routine
8 x 8 HARDWARE MULTIPLIER
Introduction
Operation
PERFORMANCE COMPARISON FOR VARIOUS MULTIPLY OPERATIONS
Without hardware multiply
Without hardware multiply
Without hardware multiply
Without hardware multiply
Hardware multiply
Hardware multiply
Hardware multiply
Hardware multiply
Multiply Method
Program
Memory
(Words)
13
33
21
28
52
35
1
6
EXAMPLE 7-1:
EXAMPLE 7-2:
MOVF
MULWF
MOVF
MULWF
BTFSC
SUBWF
MOVF
BTFSC
SUBWF
Cycles
(Max)
242
254
69
91
28
40
PIC18F2X1X/4X1X
1
6
ARG1, W
ARG2
ARG1, W
ARG2
ARG2, SB
PRODH, F
ARG2, W
ARG1, SB
PRODH, F
@ 40 MHz
24.2 μs
25.4 μs
100 ns
600 ns
6.9 μs
9.1 μs
2.8 μs
4.0 μs
8 x 8 UNSIGNED
MULTIPLY ROUTINE
8 x 8 SIGNED MULTIPLY
ROUTINE
;
; ARG1 * ARG2 ->
; PRODH:PRODL
; ARG1 * ARG2 ->
; PRODH:PRODL
; Test Sign Bit
; PRODH = PRODH
;
; Test Sign Bit
; PRODH = PRODH
;
@ 10 MHz
102.6 μs
27.6 μs
36.4 μs
96.8 μs
16.0 μs
11.2 μs
Time
400 ns
2.4 μs
- ARG1
- ARG2
DS39636D-page 81
@ 4 MHz
242 μs
254 μs
69 μs
91 μs
28 μs
40 μs
1 μs
6 μs
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