PIC18F44J50-I Datasheet, PDF (332/562 Pages) Microchip Technology – 28/44-Pin, Low-Power, High-Performance USB Microcontrollers

PIC18F46J50 FAMILY
FIGURE 20-1:
AUTOMATIC BAUD RATE CALCULATION
BRG Value
RXx 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
Auto-Cleared
RCxIF bit
(Interrupt)
Read
RCREGx
SPBRGx
XXXXh
1Ch
SPBRGHx
XXXXh
00h
Note: The ABD sequence requires the EUSART module to be configured in Asynchronous mode and WUE = 0.
FIGURE 20-2:
BRG OVERFLOW SEQUENCE
BRG Clock
ABDEN bit
RXx Pin
ABDOVF bit
BRG Value
XXXXh
Start
Bit 0
0000h
FFFFh
0000h
DS39931D-page 332
 2011 Microchip Technology Inc.