PIC18F6390 Datasheet, PDF (207/412 Pages) Microchip Technology – 64/80-Pin Flash Microcontrollers with LCD Driver and nanoWatt Technology

PIC18F6390/6490/8390/8490
FIGURE 16-1:
AUTOMATIC BAUD RATE CALCULATION
BRG Value
XXXXh
RX1 pin
0000h
Start
Edge #1
Bit 0 ^{Bit 1}
Edge #2
Bit 2 ^{Bit 3}
Edge #3
Bit 4 ^{Bit 5}
Edge #4
Bit 6 ^{Bit 7}
001Ch
Edge #5
Stop Bit
BRG Clock
Set by User
ABDEN bit
RC1IF bit
(Interrupt)
Read
RCREG1
SPBRG1
XXXXh
SPBRGH1
XXXXh
Note: The ABD sequence requires the EUSART module to be configured in Asynchronous mode and WUE = 0.
Auto-Cleared
1Ch
00h
FIGURE 16-2:
BRG OVERFLOW SEQUENCE
BRG Clock
ABDEN bit
RX1 pin
ABDOVF bit
BRG Value
XXXXh
Start
Bit 0
0000h
FFFFh
0000h
 2004 Microchip Technology Inc.
Preliminary
DS39629B-page 205