PIC18F4680-H/P Microchip Technology, PIC18F4680-H/P Datasheet - Page 330
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PIC18F4680-H/P
Manufacturer Part Number
PIC18F4680-H/P
Description
IC MCU 8BIT 64KB FLASH 44PDIP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheet
1.PIC18F4585-IPT.pdf
(482 pages)
Specifications of PIC18F4680-H/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
64KB (32K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
3.25K x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 150°C
Package / Case
40-DIP (0.600", 15.24mm)
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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PIC18F2585/2680/4585/4680
23.6.3
Transmit
PIC18F2585/2680/4585/4680 devices of the pending
transmittable messages. This is independent from and
not related to any prioritization implicit in the message
arbitration scheme built into the CAN protocol. Prior to
sending the SOF, the priority of all buffers that are
queued for transmission is compared. The transmit
FIGURE 23-2:
DS39625C-page 328
Message
priority
Control
TRANSMIT PRIORITY
Queue
TXB0
is
TRANSMIT BUFFERS
a
prioritization
within
TXB1
Preliminary
the
Transmit Byte Sequencer
buffer with the highest priority will be sent first. If two
buffers have the same priority setting, the buffer with
the highest buffer number will be sent first. There are
four levels of transmit priority. If TXP bits for a particular
message buffer are set to ‘11’, that buffer has the high-
est possible priority. If TXP bits for a particular message
buffer are set to ‘00’, that buffer has the lowest possible
priority.
TXB2
© 2007 Microchip Technology Inc.
TXB3 - TXB8
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