Datasheet

© 2009 Microchip Technology Inc. DS39632E-page 255
PIC18F2455/2550/4455/4550
TABLE 20-5: REGISTERS ASSOCIATED WITH ASYNCHRONOUS TRANSMISSION
Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Reset
Values
on page
INTCON GIE/GIEH PEIE/GIEL TMR0IE INT0IE RBIE TMR0IF INT0IF RBIF 53
PIR1
SPPIF
(1)
ADIF RCIF TXIF SSPIF CCP1IF TMR2IF TMR1IF 56
PIE1 SPPIE
(1)
ADIE RCIE TXIE SSPIE CCP1IE TMR2IE TMR1IE 56
IPR1 SPPIP
(1)
ADIP RCIP TXIP SSPIP CCP1IP TMR2IP TMR1IP 56
RCSTA
SPEN RX9 SREN CREN ADDEN FERR OERR RX9D 55
TXREG EUSART Transmit Register 55
TXSTA CSRC TX9 TXEN SYNC SENDB BRGH TRMT TX9D 55
BAUDCON
ABDOVF RCIDL RXDTP TXCKP BRG16 — WUE ABDEN 55
SPBRGH EUSART Baud Rate Generator Register High Byte 55
SPBRG EUSART Baud Rate Generator Register Low Byte 55
Legend: — = unimplemented locations read as ‘0’. Shaded cells are not used for asynchronous transmission.
Note 1: Reserved in 28-pin devices; always maintain these bits clear.