PIC18F1230 MICROCHIP [Microchip Technology], PIC18F1230 Datasheet - Page 154
PIC18F1230
Manufacturer Part Number
PIC18F1230
Description
18/20/28-Pin, Enhanced Flash Microcontrollers with nanoWatt Technology, High-Performance PWM and A/D
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.PIC18F1230.pdf
(312 pages)
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PIC18F1230/1330
FIGURE 14-4:
FIGURE 14-5:
TABLE 14-5:
DS39758B-page 152
INTCON
PIR1
PIE1
IPR1
RCSTA
TXREG
TXSTA
BAUDCON
SPBRGH
SPBRG
Legend: — = unimplemented locations read as ‘0’. Shaded cells are not used for asynchronous transmission.
Note: This timing diagram shows two consecutive transmissions.
(Interrupt Reg. Flag)
Reg. Empty Flag)
Reg. Empty Flag)
Write to TXREG
(Transmit Buffer
Name
Reg. Empty Flag)
(Transmit Shift
Write to TXREG
(Transmit Shift
BRG Output
(Shift Clock)
BRG Output
(Shift Clock)
TRMT bit
TX (pin)
TXIF bit
TRMT bit
TX (pin)
TXIF bit
EUSART Transmit Register
EUSART Baud Rate Generator Register High Byte
EUSART Baud Rate Generator Register Low Byte
GIE/GIEH PEIE/GIEL TMR0IE
ABDOVF
CSRC
SPEN
Bit 7
REGISTERS ASSOCIATED WITH ASYNCHRONOUS TRANSMISSION
—
—
—
1 T
ASYNCHRONOUS TRANSMISSION
ASYNCHRONOUS TRANSMISSION (BACK TO BACK)
CY
Word 1
Transmit Shift Reg
Word 1
Transmit Shift Reg.
Word 1
Word 1
RCIDL
ADIF
ADIE
ADIP
Bit 6
RX9
TX9
1 T
CY
Start bit
Start bit
Word 2
SREN
TXEN
RCIE
RCIP
RCIF
Bit 5
—
Advance Information
1 T
CY
bit 0
bit 0
INT0IE
CREN
SYNC
SCKP
Bit 4
TXIF
TXIE
TXIP
bit 1
Word 1
bit 1
Word 1
CMP2IF
CMP2IE
CMP2IP
ADDEN
SENDB
BRG16
RBIE
Bit 3
CMP1IE
CMP1IP
TMR0IF
CMP1IF
BRGH
FERR
Bit 2
—
bit 7/8
bit 7/8
Word 2
Transmit Shift Reg.
CMP0IF
CMP0IE
CMP0IP
INT0IF
OERR
TRMT
© 2006 Microchip Technology Inc.
Stop bit
WUE
Bit 1
Stop bit
Start bit
TMR1IF
TMR1IE
TMR1IP
ABDEN
RX9D
TX9D
RBIF
Bit 0
Word 2
on page
Values
bit 0
Reset
41
43
43
43
42
42
42
42
42
42
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