PIC18F97J60_11 Datasheet, PDF (324/492 Pages) Microchip Technology – 64/80/100-Pin, High-Performance, 1-Mbit Flash Microcontrollers with Ethernet

PIC18F97J60 FAMILY
FIGURE 21-1:
AUTOMATIC BAUD RATE CALCULATION
BRG Value
XXXXh
RXx 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
RCxIF bit
(Interrupt)
Read
RCREGx
SPBRGx
SPBRGHx
XXXXh
XXXXh
Auto-Cleared
1Ch
00h
Note: The ABD sequence requires the EUSARTx module to be configured in Asynchronous mode and WUE = 0.
FIGURE 21-2:
BRG OVERFLOW SEQUENCE
BRG Clock
ABDEN bit
RXx pin
ABDOVF bit
BRG Value
XXXXh
Start
Bit 0
0000h
FFFFh
0000h
DS39762F-page 324
 2011 Microchip Technology Inc.