PIC18F4480-E/P Microchip Technology, PIC18F4480-E/P Datasheet - Page 338
![IC PIC MCU FLASH 8KX16 40DIP](/photos/6/61/66192/150-40-dip_sml.jpg)
PIC18F4480-E/P
Manufacturer Part Number
PIC18F4480-E/P
Description
IC PIC MCU FLASH 8KX16 40DIP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC16F616T-ISL.pdf
(8 pages)
2.PIC18F2221-ISO.pdf
(46 pages)
3.PIC18F4480-IPT.pdf
(490 pages)
4.PIC18F4480-IPT.pdf
(8 pages)
5.PIC18F4480-IPT.pdf
(6 pages)
6.PIC18F4480-IPT.pdf
(6 pages)
Specifications of PIC18F4480-E/P
Core Processor
PIC
Core Size
8-Bit
Speed
25MHz
Connectivity
CAN, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
36
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 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
40-DIP (0.600", 15.24mm)
Processor Series
PIC18F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
768 B
Interface Type
SPI, I2C, MSSP, EUSART
Maximum Clock Frequency
40 MHz
Number Of Programmable I/os
36
Number Of Timers
4
Maximum Operating Temperature
+ 125 C
Mounting Style
Through Hole
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, ICE4000, DV164136, DM163011
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 11 Channel
For Use With
DVA18XP400 - DEVICE ADAPTER 18F4220 PDIP 40LDACICE0206 - ADAPTER MPLABICE 40P 600 MIL
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F4480-E/P
Manufacturer:
Microchip Technology
Quantity:
135
Company:
Part Number:
PIC18F4480-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
- PIC16F616T-ISL PDF datasheet
- PIC18F2221-ISO PDF datasheet #2
- PIC18F4480-IPT PDF datasheet #3
- PIC18F4480-IPT PDF datasheet #4
- PIC18F4480-IPT PDF datasheet #5
- PIC18F4480-IPT PDF datasheet #6
- Current page: 338 of 490
- Download datasheet (9Mb)
prescaler and number of time quanta in each segment.
PIC18F2480/2580/4480/4580
24.9
All nodes on a given CAN bus must have the same
nominal bit rate. The CAN protocol uses Non-Return-
to-Zero (NRZ) coding which does not encode a clock
within the data stream. Therefore, the receive clock
must be recovered by the receiving nodes and
synchronized to the transmitter’s clock.
As oscillators and transmission time may vary from
node to node, the receiver must have some type of
Phase Lock Loop (PLL) synchronized to data transmis-
sion edges to synchronize and maintain the receiver
clock. Since the data is NRZ coded, it is necessary to
include bit stuffing to ensure that an edge occurs at
least every six bit times to maintain the Digital Phase
Lock Loop (DPLL) synchronization.
The bit timing of the PIC18F2480/2580/4480/4580 is
implemented using a DPLL that is configured to syn-
chronize to the incoming data and provides the nominal
timing for the transmitted data. The DPLL breaks each
bit time into multiple segments made up of minimal
periods of time called the Time Quanta (T
Bus timing functions executed within the bit time frame,
such as synchronization to the local oscillator, network
transmission delay compensation and sample point
positioning, are defined by the programmable bit timing
logic of the DPLL.
All devices on the CAN bus must use the same bit rate.
However, all devices are not required to have the same
master oscillator clock frequency. For the different clock
frequencies of the individual devices, the bit rate has to
be adjusted by appropriately setting the baud rate
The Nominal Bit Rate is the number of bits transmitted
per second, assuming an ideal transmitter with an ideal
oscillator, in the absence of resynchronization. The
nominal bit rate is defined to be a maximum of 1 Mb/s.
The Nominal Bit Time is defined as:
EQUATION 24-1:
FIGURE 24-4:
DS39637D-page 338
Input
Signal
Bit
Time
Intervals
T
Baud Rate Setting
Q
T
BIT
= 1/Nominal Bit Rate
Segment
BIT TIME PARTITIONING
Sync
Sync
Propagation
Segment
Q
).
Segment 1
Phase
Nominal Bit Time
The Nominal Bit Time can be thought of as being
divided into separate, non-overlapping time segments.
These segments (Figure 24-4) include:
• Synchronization Segment (Sync_Seg)
• Propagation Time Segment (Prop_Seg)
• Phase Buffer Segment 1 (Phase_Seg1)
• Phase Buffer Segment 2 (Phase_Seg2)
The time segments (and thus, the Nominal Bit Time)
are, in turn, made up of integer units of time called Time
Quanta or T
Nominal Bit Time is programmable from a minimum of
8 T
minimum Nominal Bit Time is 1 μs, corresponding to a
maximum 1 Mb/s rate. The actual duration is given by
the following relationship.
EQUATION 24-2:
The Time Quantum is a fixed unit derived from the
oscillator period. It is also defined by the programmable
baud rate prescaler, with integer values from 1 to 64, in
addition to a fixed divide-by-two for clock generation.
Mathematically, this is:
EQUATION 24-3:
where F
corresponding oscillator period and BRP is an integer
(0 through 63) represented by the binary values of
BRGCON1<5:0>. The equation above refers to the
effective clock frequency used by the microcontroller. If,
for example, a 10 MHz crystal in HS mode is used, then
F
crystal is used in HS-PLL mode, then the effective
frequency is F
OSC
Q
Nominal Bit Time = T
to a maximum of 25 T
= 10 MHz and T
Sample Point
OSC
T
T
Q
Q
(μs) = (2 * (BRP+1))/F
Q
(μs) = (2 * (BRP+1)) * T
OSC
Phase_Seg1 + Phase_Seg2)
is the clock frequency, T
(see Figure 24-4). By definition, the
= 40 MHz and T
OSC
© 2009 Microchip Technology Inc.
Q
Segment 2
= 100 ns. If the same 10 MHz
* (Sync_Seg + Prop_Seg +
or
Phase
Q
. Also by definition, the
OSC
OSC
OSC
(MHz)
= 25 ns.
(μs)
OSC
is the
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