PIC18F2431-I/SO Microchip Technology, PIC18F2431-I/SO Datasheet - Page 222

• Manufacturer Part Number: PIC18F2431-I/SO
• Description: IC PIC MCU FLASH 8KX16 28SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F2431-I/SO

• Program Memory Type: FLASH
• Program Memory Size: 16KB (8K x 16)
• Package / Case: 28-SOIC (7.5mm Width)
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LVD, Power Control PWM, QEI, POR, PWM, WDT
• Number Of I /o: 24
• Eeprom Size: 256 x 8
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 5x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Processor Series: PIC18F
• Core: PIC
• Data Bus Width: 8 bit
• Data Ram Size: 768 B
• Interface Type: EUSART/I2C/SPI/SSP
• Maximum Clock Frequency: 40 MHz
• Number Of Programmable I/os: 24
• Number Of Timers: 4
• Operating Supply Voltage: 2 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: 52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
• Development Tools By Supplier: PG164130, DV164035, DV244005, DV164005, PG164120, ICE2000, ICE4000, DM183021, DV164136
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 5-ch x 10-bit
• Package: 28SOIC W
• Device Core: PIC
• Family Name: PIC18
• Maximum Speed: 40 MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: XLT28SO-1 - SOCKET TRANSITION 28SOIC 300MILI3-DB18F4431 - BOARD DAUGHTER ICEPIC3
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

PIC18F2331/2431/4331/4431
EXAMPLE 20-1:
TABLE 20-2:
TABLE 20-3:
DS39616D-page 222
TXSTA
RCSTA
BAUDCON
SPBRGH
SPBRG
Legend: — = unimplemented, read as ‘0’. Shaded cells are not used by the BRG.
For a device with F
Desired Baud Rate = F
Solving for SPBRGH:SPBRG:
Calculated Baud Rate = 16000000/(64 (25 + 1))
Error
BAUD
BAUD
RATE
RATE
115.2
115.2
19.2
57.6
19.2
57.6
(K)
0.3
1.2
2.4
9.6
(K)
0.3
1.2
2.4
9.6
Name
X
125.000
Actual
19.531
56.818
Actual
20.833
62.500
62.500
=
=
=
=
=
=
2.441
9.615
0.300
1.202
2.404
8.929
Rate
Rate
(K)
(K)
—
—
F
EUSART Baud Rate Generator Register High Byte
EUSART Baud Rate Generator Register Low Byte
F
OSC
((F
((16000000/9600)/64) – 1
[25.042] = 25
9615
(Calculated Baud Rate – Desired Baud Rate)/Desired Baud Rate
(9615 – 9600)/9600 = 0.16%
OSC
CSRC
SPEN
Bit 7
OSC
REGISTERS ASSOCIATED WITH BAUD RATE GENERATOR
BAUD RATES FOR ASYNCHRONOUS MODES
—
OSC
= 40.000 MHz
= 4.000 MHz
-45.75
Error
Error
-1.36
-6.99
1.73
0.16
1.73
8.51
0.16
0.16
0.16
8.51
8.51
/Desired Baud Rate)/64) – 1
—
—
%
%
OSC
CALCULATING BAUD RATE ERROR
of 16 MHz, desired baud rate of 9600, Asynchronous mode, 8-bit BRG:
/(64 ([SPBRGH:SPBRG] + 1))
RCIDL
(decimal)
(decimal)
Bit 6
SPBRG
SPBRG
RX9
TX9
value
value
255
207
64
31
10
51
25
—
—
4
6
2
0
0
SYNC = 0, BRGH = 0, BRG16 = 0
104.167
Actual
19.531
62.500
Actual
SREN
TXEN
1.221
2.404
9.766
0.300
1.201
2.403
Bit 5
Rate
Rate
(K)
(K)
—
—
—
—
—
—
F
F
OSC
OSC
= 20.000 MHz
= 2.000 MHz
Error
Error
-9.58
-0.16
-0.16
-0.16
1.73
0.16
1.73
1.73
8.51
SYNC = 0, BRGH = 0, BRG16 = 0
%
—
%
—
—
—
—
CREN
SYNC
SCKP
Bit 4
(decimal)
(decimal)
SPBRG
SPBRG
value
value
255
129
103
31
15
25
12
—
—
—
—
—
2
4
SENDB
ADDEN
BRG16
Bit 3
Actual
19.531
52.083
78.125
Actual
1.202
2.404
9.766
0.300
1.201
Rate
Rate
(K)
(K)
—
—
—
—
—
—
F
F
OSC
OSC
BRGH
FERR
Bit 2
= 10.000 MHz
= 1.000 MHz
-32.18
—
Error
Error
-9.58
-0.16
-0.16
0.16
0.16
1.73
1.73
—
—
—
—
—
—
%
%
(decimal)
(decimal)
SPBRG
SPBRG
OERR
TRMT
value
value
WUE
Bit 1
129
64
15
51
12
—
—
—
—
—
—
7
2
1
 2010 Microchip Technology Inc.
Actual
1.201
2.403
9.615
Rate
ABDEN
(K)
—
—
—
—
RX9D
TX9D
Bit 0
F
OSC
= 8.000 MHz
Error
-0.16
-0.16
-0.16
—
—
—
—
Reset Values
%
on Page:
56
56
56
56
56
(decimal)
SPBRG
value
103
—
51
12
—
—
—