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PIC18F4685-I/SP Datasheet(PDF) 276 Page - Microchip Technology

Part # PIC18F4685-I/SP
Description  28/40/44-Pin Enhanced Flash Microcontrollers with ECAN Technology, 10-Bit A/D and nanoWatt Technology
PDF  484 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

PIC18F4685-I/SP Datasheet(HTML) 276 Page - Microchip Technology

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PIC18F2682/2685/4682/4685
DS39761B-page 274
Preliminary
© 2007 Microchip Technology Inc.
FIGURE 23-1:
CAN BUFFERS AND PROTOCOL ENGINE BLOCK DIAGRAM
TXB2
Message
Queue
Control
Transmit Byte Sequencer
TXB1
TXB0
Acceptance Filters
(RXF0-RXF05)
A
c
c
e
p
t
Data Field
Identifier
Acceptance Filters
(RXF06-RXF15)
M
A
B
Rcv Byte
16 – 4 to 1 MUXs
PROTOCOL
MESSAGE
BUFFERS
Transmit Option
MODE 0
MODE 1, 2
6 TX/RX
Buffers
2 RX
Buffers
CRC<14:0>
Comparator
Receive<8:0>
Transmit<7:0>
Receive
Error
Transmit
Error
Protocol
REC
TEC
Err-Pas
Bus-Off
Finite
State
Machine
Counter
Counter
Shift<14:0>
{Transmit<5:0>, Receive<8:0>}
Transmit
Logic
Bit
Timing
Logic
TX
RX
Configuration
Registers
Clock
Generator
BUFFERS
ENGINE
MODE 0
MODE 1, 2
RXF15
VCC



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