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PIC18F4685-I/SP Datasheet(PDF) 237 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) 237 Page - Microchip Technology

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© 2007 Microchip Technology Inc.
Preliminary
DS39761B-page 235
PIC18F2682/2685/4682/4685
FIGURE 18-1:
AUTOMATIC BAUD RATE CALCULATION
FIGURE 18-2:
BRG OVERFLOW SEQUENCE
BRG Value
RX pin
ABDEN bit
RCIF bit
bit 0
bit 1
(Interrupt)
Read
RCREG
BRG Clock
Start
Auto-Cleared
Set by User
XXXXh
0000h
Edge #1
bit 2
bit 3
Edge #2
bit 4
bit 5
Edge #3
bit 6
bit 7
Edge #4
Stop bit
Edge #5
001Ch
Note: The ABD sequence requires the EUSART module to be configured in Asynchronous mode and WUE = 0.
SPBRG
XXXXh
1Ch
SPBRGH
XXXXh
00h
Start
bit 0
XXXXh
0000h
0000h
FFFFh
BRG Clock
ABDEN bit
RX pin
ABDOVF bit
BRG Value



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