PIC18F87J90 Datasheet, PDF (263/450 Pages) Microchip Technology – 64/80-Pin, High-Performance Microcontrollers with LCD Driver and nanoWatt Technology

PIC18F87J90 FAMILY
FIGURE 19-1:
AUTOMATIC BAUD RATE CALCULATION
BRG Value
RX1 pin
XXXXh
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 19-2:
BRG OVERFLOW SEQUENCE
BRG Clock
ABDEN bit
RX1 pin
ABDOVF bit
BRG Value
XXXXh
Start
bit 0
0000h
FFFFh
0000h
 2010 Microchip Technology Inc.
DS39933D-page 263