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PIC18F4685-I/SP Datasheet(PDF) 287 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) 287 Page - Microchip Technology

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© 2007 Microchip Technology Inc.
Preliminary
DS39761B-page 285
PIC18F2682/2685/4682/4685
REGISTER 23-11: TXBnDLC: TRANSMIT BUFFER n DATA LENGTH CODE REGISTERS [0
≤ n ≤ 2]
U-0
R/W-x
U-0
U-0
R/W-x
R/W-x
R/W-x
R/W-x
—TXRTR
—
—
DLC3
DLC2
DLC1
DLC0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7
Unimplemented: Read as ‘0’
bit 6
TXRTR: Transmit Remote Frame Transmission Request bit
1
= Transmitted message will have TXRTR bit set
0
= Transmitted message will have TXRTR bit cleared
bit 5-4
Unimplemented: Read as ‘0’
bit 3-0
DLC3:DLC0: Data Length Code bits
1111
= Reserved
1110
= Reserved
1101
= Reserved
1100
= Reserved
1011
= Reserved
1010
= Reserved
1001
= Reserved
1000
= Data length = 8 bytes
0111
= Data length = 7 bytes
0110
= Data length = 6 bytes
0101
= Data length = 5 bytes
0100
= Data length = 4 bytes
0011
= Data length = 3 bytes
0010
= Data length = 2 bytes
0001
= Data length = 1 bytes
0000
= Data length = 0 bytes
REGISTER 23-12: TXERRCNT: TRANSMIT ERROR COUNT REGISTER
R-0
R-0
R-0
R-0
R-0
R-0
R-0
R-0
TEC7
TEC6
TEC5
TEC4
TEC3
TEC2
TEC1
TEC0
bit 7
bit 0
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-0
TEC7:TEC0: Transmit Error Counter bits
This register contains a value which is derived from the rate at which errors occur. When the error
count overflows, the bus-off state occurs. When the bus has 128 occurrences of 11 consecutive
recessive bits, the counter value is cleared.



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