PIC18F2450 Datasheet, PDF (163/320 Pages) Microchip Technology – 28/40/44-Pin, High-Performance, 12 MIPS, Enhanced Flash, USB Microcontrollers with nanoWatt Technology

PIC18F2450/4450
FIGURE 15-1:
AUTOMATIC BAUD RATE CALCULATION
BRG Value
RX 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
RCIF bit
(Interrupt)
Read
RCREG
SPBRG
SPBRGH
XXXXh
XXXXh
Note: The ABD sequence requires the EUSART module to be configured in Asynchronous mode and WUE = 0.
Auto-Cleared
1Ch
00h
FIGURE 15-2:
BRG OVERFLOW SEQUENCE
BRG Clock
ABDEN bit
RX pin
ABDOVF bit
BRG Value
XXXXh
Start
bit 0
0000h
FFFFh
0000h
© 2006 Microchip Technology Inc.
Advance Information
DS39760A-page 161