PIC18F23K20-E/MLQTP MICROCHIP [Microchip Technology], PIC18F23K20-E/MLQTP Datasheet - Page 233

• Manufacturer Part Number: PIC18F23K20-E/MLQTP
• Description: 28/40/44-Pin Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

FIGURE 18-4:
TABLE 18-1:
© 2007 Microchip Technology Inc.
INTCON
PIR1
PIE1
IPR1
RCSTA
TXREG
TXSTA
BAUDCTL
SPBRGH
SPBRG
Legend: — = unimplemented locations read as ‘0’. Shaded cells are not used for asynchronous transmission.
Note 1:
(Interrupt Reg. Flag)
RC4/C2OUT/TX/CK
Note:
Reg. Empty Flag)
Name
Write to TXREG
(Transmit Shift
BRG Output
(Shift Clock)
TRMT bit
TXIF bit
Reserved in PIC18F2XK20 devices; always maintain these bits clear.
This timing diagram shows two consecutive transmissions.
EUSART Transmit Register
pin
EUSART Baud Rate Generator Register, High Byte
EUSART Baud Rate Generator Register, Low Byte
GIE/GIEH PEIE/GIEL TMR0IE
ABDOVF
PSPIE
PSPIP
PSPIF
CSRC
SPEN
Bit 7
REGISTERS ASSOCIATED WITH ASYNCHRONOUS TRANSMISSION
(1)
(1)
(1)
ASYNCHRONOUS TRANSMISSION (BACK-TO-BACK)
1 T
CY
Transmit Shift Reg
Word 1
Word 1
RCIDL
ADIF
ADIE
ADIP
Bit 6
RX9
TX9
Start bit
Word 2
DTRXP
SREN
TXEN
RCIE
RCIP
RCIF
Bit 5
Advance Information
1 T
CY
bit 0
CKTXP
INT0IE
CREN
SYNC
Bit 4
TXIF
TXIE
TXIP
bit 1
Word 1
ADDEN
SENDB
BRG16
PIC18F2XK20/4XK20
SSPIF
SSPIE
SSPIP
RBIE
Bit 3
TMR0IF
CCP1IF
CCP1IE
CCP1IP
BRGH
FERR
Bit 2
—
bit 7/8
TMR2IF
TMR2IE
TMR2IP
Word 2
Transmit Shift Reg
INT0IF
OERR
TRMT
Stop bit
WUE
Bit 1
Start bit
TMR1IE
TMR1IP
TMR1IF
ABDEN
RX9D
TX9D
DS41303B-page 231
RBIF
Bit 0
Word 2
on page
Values
Reset
bit 0
57
60
60
60
59
59
59
59
59
59