PIC18LF4520-I/PT Microchip Technology Inc., PIC18LF4520-I/PT Datasheet - Page 221
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PIC18LF4520-I/PT
Manufacturer Part Number
PIC18LF4520-I/PT
Description
44 Pin, 32 KB Flash, 1536 RAM, 36 I/O
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC18LF4520-IPT.pdf
(390 pages)
Specifications of PIC18LF4520-I/PT
A/d Inputs
13-Channel, 10-Bit
Comparators
2
Cpu Speed
10 MIPS
Eeprom Memory
256 Bytes
Input Output
36
Interface
I2C/SPI/UART/USART
Memory Type
Flash
Number Of Bits
8
Package Type
44-pin TQFP
Programmable Memory
32K Bytes
Ram Size
1.5K 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
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18.3.2
Once Synchronous mode is selected, reception is
enabled by setting either the Single Receive Enable bit,
SREN (RCSTA<5>), or the Continuous Receive
Enable bit, CREN (RCSTA<4>). Data is sampled on the
RX pin on the falling edge of the clock.
If enable bit SREN is set, only a single word is received.
If enable bit CREN is set, the reception is continuous
until CREN is cleared. If both bits are set, then CREN
takes precedence.
To set up a Synchronous Master Reception:
1.
2.
FIGURE 18-13:
TABLE 18-8:
2004 Microchip Technology Inc.
INTCON
PIR1
PIE1
IPR1
RCSTA
RCREG
TXSTA
BAUDCON ABDOVF
SPBRGH
SPBRG
Legend: — = unimplemented, read as ‘0’. Shaded cells are not used for synchronous master reception.
Note 1:
Note: Timing diagram demonstrates Sync Master mode with bit SREN = 1 and bit BRGH = 0.
Name
RC6/TX/CK pin
RC6/TX/CK pin
Initialize the SPBRGH:SPBRG registers for the
appropriate baud rate. Set or clear the BRG16
bit, as required, to achieve the desired baud rate.
Enable the synchronous master serial port by
setting bits SYNC, SPEN and CSRC.
RC7/RX/DT
(SCKP = 0)
(SCKP = 1)
(Interrupt)
CREN bit
bit SREN
SREN bit
RCIF bit
RXREG
Write to
Reserved in 28-pin devices; always maintain these bits clear.
Read
EUSART SYNCHRONOUS
MASTER RECEPTION
EUSART Receive Register
EUSART Baud Rate Generator Register, High Byte
EUSART Baud Rate Generator Register, Low Byte
pin
GIE/GIEH PEIE/GIEL TMR0IE
PSPIF
PSPIE
PSPIP
Q2
CSRC
SPEN
Bit 7
Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
‘0’
REGISTERS ASSOCIATED WITH SYNCHRONOUS MASTER RECEPTION
(1)
(1)
(1)
SYNCHRONOUS RECEPTION (MASTER MODE, SREN)
RCIDL
ADIF
ADIE
ADIP
Bit 6
RX9
TX9
bit 0
SREN
TXEN
RCIF
RCIE
RCIP
Bit 5
Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
—
bit 1
PIC18F2420/2520/4420/4520
bit 2
INT0IE
CREN
Preliminary
SYNC
SCKP
Bit 4
TXIF
TXIE
TXIP
bit 3
ADDEN
SENDB
BRG16
SSPIF
SSPIE
SSPIP
RBIE
3.
4.
5.
6.
7.
8.
9.
10. If any error occurred, clear the error by clearing
11. If using interrupts, ensure that the GIE and PEIE bits
Bit 3
Ensure bits CREN and SREN are clear.
If interrupts are desired, set enable bit RCIE.
If 9-bit reception is desired, set bit RX9.
If a single reception is required, set bit SREN.
For continuous reception, set bit CREN.
Interrupt flag bit, RCIF, will be set when reception
is complete and an interrupt will be generated if
the enable bit, RCIE, was set.
Read the RCSTA register to get the 9th bit (if
enabled) and determine if any error occurred
during reception.
Read the 8-bit received data by reading the
RCREG register.
bit CREN.
in the INTCON register (INTCON<7:6>) are set.
bit 4
TMR0IF
CCP1IF
CCP1IE
CCP1IP
BRGH
FERR
Bit 2
—
bit 5
TMR2IE
TMR2IP
TMR2IF
INT0IF
OERR
TRMT
WUE
bit 6
Bit 1
TMR1IE
TMR1IP
TMR1IF
ABDEN
bit 7
RX9D
TX9D
Bit 0
RBIF
DS39631A-page 219
Q1 Q2 Q3 Q4
on page
Values
Reset
49
52
52
52
51
51
51
51
51
51
‘0’
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