Datasheet

 2010 Microchip Technology Inc. DS39635C-page 225
PIC18F6310/6410/8310/8410
FIGURE 18-1: AUTOMATIC BAUD RATE CALCULATION
FIGURE 18-2: BRG OVERFLOW SEQUENCE
BRG Value
RX1 Pin
ABDEN bit
RC1IF bit
Bit 0
Bit 1
(Interrupt)
Read
RCREG1
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.
SPBRG1
XXXXh
1Ch
SPBRGH1
XXXXh 00h
Start Bit 0
XXXXh 0000h 0000h
FFFFh
BRG Clock
ABDEN bit
RX1 Pin
ABDOVF bit
BRG Value