PIC18F4431-I/PT Microchip Technology Inc., PIC18F4431-I/PT Datasheet - Page 233
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PIC18F4431-I/PT
Manufacturer Part Number
PIC18F4431-I/PT
Description
Microcontroller; 16 KB Flash; 768 RAM; 256 EEPROM; 36 I/O; 44-Pin TQFP
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC18F4431-IPT.pdf
(396 pages)
Specifications of PIC18F4431-I/PT
A/d Inputs
9-Channel, 10-Bit
Cpu Speed
10 MIPS
Eeprom Memory
256 Bytes
Input Output
36
Interface
I2C/SPI/USART
Memory Type
Flash
Number Of Bits
8
Package Type
44-pin TQFP
Programmable Memory
16K Bytes
Ram Size
768 Bytes
Speed
40 MHz
Timers
1-8-bit, 3-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
Available stocks
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Quantity
Price
Company:
Part Number:
PIC18F4431-I/PT
Manufacturer:
MICROCHIP
Quantity:
1 400
Company:
Part Number:
PIC18F4431-I/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
Part Number:
PIC18F4431-I/PT
Manufacturer:
MICROCHI
Quantity:
20 000
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FIGURE 19-2:
FIGURE 19-3:
FIGURE 19-4:
2003 Microchip Technology Inc.
(Interrupt Reg. Flag)
Reg. Empty Flag)
Reg. Empty Flag)
Note:
Reg. Empty Flag)
Write to TXREG
(Transmit Buffer
RC6/TX/CK/SS
Write to TXREG
(Transmit Shift
RC6/TX/CK/SS
(Transmit Shift
BRG Output
(Shift Clock)
BRG Output
(Shift Clock)
BRG16
TRMT bit
TRMT bit
TXIF bit
TXIF bit
This timing diagram shows two consecutive transmissions.
TXIE
(pin)
(pin)
Interrupt
SPBRGH
Baud Rate Generator
TXEN
TXIF
USART TRANSMIT BLOCK DIAGRAM
ASYNCHRONOUS TRANSMISSION
ASYNCHRONOUS TRANSMISSION (BACK TO BACK)
1 T
Word 1
Transmit Shift Reg
CY
Word 1
Transmit Shift Reg.
Word 1
Word 1
Baud Rate CLK
SPBRG
1 T
CY
Start bit
Start bit
Word 2
MSb
(8)
PIC18F2331/2431/4331/4431
1 T
TX9D
CY
TXREG Register
bit 0
bit 0
TSR Register
TX9
Preliminary
8
Data Bus
bit 1
Word 1
bit 1
Word 1
LSb
0
TRMT
bit 7/8
Pin Buffer
and Control
bit 7/8
SPEN
Word 2
Transmit Shift Reg.
Stop bit
Stop bit
RC6/TX/CK/SS pin
Start bit
DS39616B-page 231
Word 2
bit 0
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