PIC18F87K22 Datasheet, PDF (334/548 Pages) Microchip Technology – 64/80-Pin, High-Performance, 1-Mbit Enhanced Flash Microcontrollers with 12-Bit A/D and nanoWatt XLP Technology

PIC18F87K22 FAMILY
FIGURE 22-1:
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
RCxIF bit
(Interrupt)
Read
RCREGx
SPBRGx
XXXXh
SPBRGHx
XXXXh
Note: The ABD sequence requires the EUSART module to be configured in Asynchronous mode and WUE = 0.
Auto-Cleared
1Ch
00h
FIGURE 22-2:
BRG OVERFLOW SEQUENCE
BRG Clock
ABDEN bit
RXx Pin
ABDOVF bit
BRG Value
XXXXh
Start
Bit 0
0000h
FFFFh
0000h
DS39960B-page 334
Preliminary
 2010 Microchip Technology Inc.