PIC16F946T-I/PT Microchip Technology, PIC16F946T-I/PT Datasheet - Page 143

• 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

FIGURE 11-4:
FIGURE 11-5:
TABLE 11-6:
© 2005 Microchip Technology Inc.
0Bh, 8Bh,
10Bh,18Bh
0Ch
18h
1Ah
8Ch
98h
99h
Legend:
Address
Note:
RX (pin)
Rcv Shift
Reg
Rcv Buffer Reg
Read Rcv
Buffer Reg
RCREG
RCIF
(Interrupt Flag)
OERR bit
CREN
RC7/RX/DT/
SDI/SDA/SEG8
x = unknown, – = unimplemented locations read as ‘0’. Shaded cells are not used for asynchronous reception.
INTCON
PIR1
RCSTA
RCREG USART Receive Data Register
PIE1
TXSTA
SPBRG Baud Rate Generator Register
F
Name
OSC
This timing diagram shows three words appearing on the RX input. The RCREG (Receive Buffer) is read after the third word,
causing the OERR (Overrun Error) bit to be set.
REGISTERS ASSOCIATED WITH ASYNCHRONOUS RECEPTION
Baud Rate Generator
CSRC
x64 Baud Rate CLK
SPEN
EEIF
EEIE
Bit 7
Start
USART RECEIVE BLOCK DIAGRAM
ASYNCHRONOUS RECEPTION
GIE
bit
and Control
SPBRG
Pin Buffer
bit 0
SPEN
PEIE
ADIF
ADIE
Bit 6
RX9
TX9
bit 1
SREN
TXEN
RCIF
RCIE
Bit 5
T0IE
bit 7/8
Recovery
CREN
SYNC
INTE
Bit 4
TXIF
TXIE
Interrupt
Data
or
64
16
Preliminary
Stop
bit
CREN
Word 1
RCREG
ADDEN
SSPIF
SSPIE
RBIE
Start
Bit 3
bit
—
bit 0
RCIF
RCIE
CCP1IE TMR2IE TMR1IE
CCP1IF TMR2IF TMR1IF
RX9
BRGH
FERR
Bit 2
T0IF
MSb
Stop
RX9D
(8) 7
bit 7/8
OERR
TRMT
Word 2
RCREG
Bit 1
INTF
OERR
RCREG Register
Stop
RSR Register
bit
RX9D
TX9D
RBIF
Bit 0
8
Start
Data Bus
bit
PIC16F946
1 0
FERR
0000 000x
0000 0000
0000 000x
0000 0000
0000 0000
0000 -010
0000 0000
POR, BOR
Value on:
Start
bit 7/8
DS41265A-page 141
FIFO
LSb
Stop
0000 000x
0000 0000
0000 000x
0000 0000
0000 0000
0000 -010
0000 0000
bit
Value on
all other
Resets