PIC18F4580-E/PT Microchip Technology, PIC18F4580-E/PT Datasheet - Page 242

• Manufacturer Part Number: PIC18F4580-E/PT
• Description: IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,TQFP,44PIN,PLASTIC
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F4580-E/PT

• Rohs Compliant: YES
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 25MHz
• Connectivity: CAN, I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 36
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 11x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIC18F2480/2580/4480/4580
FIGURE 19-3:
FIGURE 19-4:
FIGURE 19-5:
DS39637D-page 242
(Interrupt Reg. Flag)
Note:
Reg. Empty Flag)
Reg. Empty Flag)
Write to TXREG
(Transmit Buffer
Reg. Empty Flag)
(Transmit Shift
Write to TXREG
(Transmit Shift
BRG Output
(Shift Clock)
BRG Output
(Shift Clock)
TRMT bit
TXIF bit
This timing diagram shows two consecutive transmissions.
TRMT bit
BRG16
TXIF bit
(pin)
TX
(pin)
TXIE
TX
Interrupt
1 T
EUSART TRANSMIT BLOCK DIAGRAM
ASYNCHRONOUS TRANSMISSION
ASYNCHRONOUS TRANSMISSION (BACK-TO-BACK)
SPBRGH
Baud Rate Generator
CY
Transmit Shift Reg.
TXIF
Word 1
Transmit Shift Reg
Word 1
TXEN
Word 1
Word 1
Baud Rate CLK
1 T
SPBRG
Start bit
CY
Start bit
Word 2
MSb
(8)
1 T
CY
bit 0
bit 0
TXREG Register
TSR Register
TX9D
• • •
bit 1
TX9
Word 1
8
Data Bus
bit 1
Word 1
LSb
0
TRMT
bit 7/8
bit 7/8
and Control
Pin Buffer
Word 2
Transmit Shift Reg.
Stop bit
© 2009 Microchip Technology Inc.
SPEN
Stop bit
Start bit
Word 2
TX Pin
bit 0