PIC16LF1904 Datasheet, PDF (159/288 Pages) Microchip Technology – 28/40/44-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt XLP Technology

PIC16LF1904/6/7
FIGURE 18-4:
Write to TXREG
BRG Output
(Shift Clock)
TX/CK pin
TXIF bit
(Interrupt Reg. Flag)
TRMT bit
(Transmit Shift
Reg. Empty Flag)
ASYNCHRONOUS TRANSMISSION (BACK-TO-BACK)
Word 1
Word 2
1 TCY
Start bit
Word 1
Transmit Shift Reg
bit 0
1 TCY
bit 1
Word 1
bit 7/8 _{Stop bit}
Start bit
bit 0
Word 2
Word 2
Transmit Shift Reg
Note:
This timing diagram shows two consecutive transmissions.
TABLE 18-1: REGISTERS ASSOCIATED WITH ASYNCHRONOUS TRANSMISSION
Name
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Register
on page
BAUD1CON ABDOVF RCIDL
—
SCKP BRG16
—
WUE
ABDEN
166
BAUD2CON ABDOVF RCIDL
—
SCKP BRG16
—
WUE
ABDEN
166
INTCON
GIE
PEIE
TMR0IE
INTE
IOCIE TMR0IF
INTF
IOCIF
93
PIE1
TMR1GIE ADIE
RCIE⁽¹⁾
TXIE⁽¹⁾
—
—
—
TMR1IE
94
PIR1
TMR1GIF ADIF
RCIF⁽¹⁾
TXIF⁽¹⁾
—
—
—
TMR1IF
98
RCSTA
SPEN
RX9
SREN
CREN ADDEN FERR
OERR
RX9D
165
SPBRGL
EUSART Baud Rate Generator, Low Byte
SPBRGH
EUSART Baud Rate Generator, High Byte
TXREG
EUSART Transmit Register
TXSTA
CSRC
TX9
TXEN
SYNC SENDB BRGH
TRMT
TX9D
Legend:
*
Note 1:
— = unimplemented locations, read as ‘0’. Shaded bits are not used for asynchronous transmission.
Page provides register information.
PIC16LF1904/7 only.
167*
167*
157*
164
 2011 Microchip Technology Inc.
Preliminary
DS41569A-page 159