PIC18F2221 MICROCHIP [Microchip Technology], PIC18F2221 Datasheet - Page 212

• Manufacturer Part Number: PIC18F2221
• Description: 28/40/44-Pin Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18F4321 FAMILY
EXAMPLE 18-1:
TABLE 18-2:
DS39689E-page 210
TXSTA
RCSTA
BAUDCON ABDOVF
SPBRGH
SPBRG
Legend: — = unimplemented, read as ‘0’. Shaded cells are not used by the BRG.
For a device with F
Desired Baud Rate
Solving for SPBRGH:SPBRG:
Calculated Baud Rate
Error
Name
EUSART Baud Rate Generator Register High Byte
EUSART Baud Rate Generator Register Low Byte
CSRC
SPEN
Bit 7
REGISTERS ASSOCIATED WITH BAUD RATE GENERATOR
X
OSC
CALCULATING BAUD RATE ERROR
of 16 MHz, desired baud rate of 9600, Asynchronous mode, 8-bit BRG:
= F
= ((F
= ((16000000/9600)/64) – 1
= [25.042] = 25
= 16000000/(64 (25 + 1))
= 9615
= (Calculated Baud Rate – Desired Baud Rate)/Desired Baud Rate
= (9615 – 9600)/9600 = 0.16%
RCIDL
Bit 6
RX9
TX9
OSC
OSC
/(64 ([SPBRGH:SPBRG] + 1))
/Desired Baud Rate)/64) – 1
RXDTP
TXEN
SREN
Bit 5
TXCKP
SYNC
CREN
Bit 4
Preliminary
SENDB
ADDEN
BRG16
Bit 3
BRGH
FERR
Bit 2
—
OERR
TRMT
WUE
Bit 1
© 2007 Microchip Technology Inc.
ABDEN
RX9D
TX9D
Bit 0
Reset Values
on page
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