PIC16F946T-I/PT Microchip Technology, PIC16F946T-I/PT Datasheet - Page 140

• Manufacturer Part Number: PIC16F946T-I/PT
• Description: Microcontroller
• Manufacturer: Microchip Technology
• Series: PIC® 16Fr

Specifications of PIC16F946T-I/PT

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, LCD, POR, PWM, WDT
• Number Of I /o: 53
• Program Memory Size: 14KB (8K x 14)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 336 x 8
• Voltage - Supply (vcc/vdd): 2 V ~ 5.5 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TFQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MA160011 - DAUGHTER BOARD PICDEM LCD 16F91X
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

PIC16F946
FIGURE 11-1:
FIGURE 11-2:
FIGURE 11-3:
DS41265A-page 138
Write to TXREG
BRG Output
(Shift Clock)
RC6/TX/CK/
SCK/SCL/SEG9
TXIF bit
(Interrupt Reg. Flag)
TRMT bit
(Transmit Shift
Reg. Empty Flag)
Note:
Write to TXREG
BRG Output
(Shift Clock)
RC6/TX/CK/
SCK/SCL/SEG9
TXIF bit
(Transmit Buffer
Reg. Empty Flag)
TRMT bit
(Transmit Shift
Reg. Empty Flag)
This timing diagram shows two consecutive transmissions.
TXIE
Interrupt
TXIF
TXEN
Baud Rate Generator
USART TRANSMIT BLOCK DIAGRAM
ASYNCHRONOUS MASTER TRANSMISSION
ASYNCHRONOUS MASTER TRANSMISSION (BACK-TO-BACK)
Word 1
Transmit Shift Reg.
Word 1
Transmit Shift Reg
Word 1
Word 1
SPBRG
Baud Rate CLK
Start bit
Start bit
MSb
Word 2
(8)
TX9D
TXREG Register
TSR Register
bit 0
bit 0
TX9
Preliminary
8
Data Bus
bit 1
Word 1
bit 1
Word 1
LSb
0
TRMT
bit 7/8
and Control
Word 2
Transmit Shift Reg.
Pin Buffer
bit 7/8
SPEN
© 2005 Microchip Technology Inc.
Stop bit
Stop bit
RC6/TX/CK/SCK/
SCL/SEG9 pin
Start bit
Word 2
bit 0