PIC18F8520-I/PT Microchip Technology Inc., PIC18F8520-I/PT Datasheet - Page 209

• Manufacturer Part Number: PIC18F8520-I/PT
• Description: 80 PIN, 32 KB FLASH, 2048 RAM, 68 I/O
• Manufacturer: Microchip Technology Inc.

Specifications of PIC18F8520-I/PT

• A/d Inputs: 16-Channel, 10-Bit
• Comparators: 2
• Cpu Speed: 10 MIPS
• Eeprom Memory: 1024 Bytes
• Input Output: 68
• Interface: I2C/SPI/UART/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 80-pin TQFP
• Programmable Memory: 32K Bytes
• Ram Size: 2K Bytes
• Speed: 40 MHz
• Timers: 2-8-bit, 3-16-bit
• Voltage, Range: 2-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part

FIGURE 18-5:
TABLE 18-7:
 2004 Microchip Technology Inc.
INTCON
PIR1
PIE1
IPR1
PIR3
PIE3
IPR3
RCSTAx
RCREGx
TXSTAx
SPBRGx
Legend:
Note 1:
Name
RX (pin)
Rcv Shift
Reg
Rcv Buffer Reg
Read Rcv
Buffer Reg
RCREG
RCIF
(Interrupt Flag)
OERR bit
CREN
Note:
(1)
(1)
(1)
(1)
x = unknown, – = unimplemented locations read as ‘0’. Shaded cells are not used for asynchronous reception.
Register names generically refer to both of the identically named registers for the two USART modules, where ‘x’
indicates the particular module. Bit names and Reset values are identical between modules.
USART Receive Register
Baud Rate Generator Register
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) bit to be set.
PSPIF
PSPIE
PSPIP
SPEN
CSRC
GIEH
Bit 7
GIE/
—
—
—
PIC18F6520/8520/6620/8620/6720/8720
REGISTERS ASSOCIATED WITH ASYNCHRONOUS RECEPTION
Start
ASYNCHRONOUS RECEPTION
bit
PEIE/
ADIE
ADIP
GIEL
ADIF
Bit 6
RX9
TX9
—
—
—
bit 0
TMR0IE
bit 1
RC1IE
RC1IP
RC2IE
RC2IP
RC1IF
RC2IF
SREN
TXEN
Bit 5
INT0IE
CREN
TX2IF
TX2IE
TX2IP
SYNC
TXIE
TXIP
Bit 4
TXIF
bit 7/8
Stop
TMR4IF CCP5IF
TMR4IE CCP5IE CCP4IE
TMR4IP CCP5IP CCP4IP
bit
ADDEN
SSPIF
SSPIE
SSPIP
RBIE
Bit 3
—
Word 1
RCREG
Start
bit
TMR0IF
CCP1IE TMR2IE TMR1IE
CCP1IP TMR2IP TMR1IP
CCP1IF
BRGH
FERR
bit 0
Bit 2
TMR2IF
CCP4IF
INT0IF
OERR
TRMT
Bit 1
bit 7/8
Word 2
RCREG
TMR1IF
CCP3IF
CCP3IE
CCP3IP
Stop
RX9D
TX9D
Bit 0
RBIF
bit
Start
bit
0000 0000
0000 0000
0000 0000
0111 1111
--00 0000
--00 0000
--11 1111
0000 000x
0000 0000
0000 -010
0000 0000
POR, BOR
Value on
bit 7/8
DS39609B-page 207
Stop
0000 0000
0000 0000
0000 0000
0111 1111
--00 0000
--00 0000
--11 1111
0000 000x
0000 0000
0000 -010
0000 0000
bit
Value on
all other
Resets