PIC18F4431-I/P Microchip Technology Inc., PIC18F4431-I/P Datasheet - Page 244
![no-image](/images/manufacturer_photos/0/4/440/microchip_technology_inc__sml.jpg)
PIC18F4431-I/P
Manufacturer Part Number
PIC18F4431-I/P
Description
Microcontroller; 16 KB Flash; 768 RAM; 256 EEPROM; 36 I/O; 40-Pin-PDIP
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC18F4431-IP.pdf
(396 pages)
Specifications of PIC18F4431-I/P
A/d Inputs
9-Channel, 10-Bit
Cpu Speed
10 MIPS
Eeprom Memory
256 Bytes
Input Output
36
Interface
I2C/SPI/USART
Memory Type
Flash
Number Of Bits
8
Package Type
40-pin PDIP
Programmable Memory
16K Bytes
Ram Size
768 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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PIC18F2331/2431/4331/4431
19.5.2
The operation of the Synchronous Master and Slave
modes is identical, except in the case of Sleep, or any
Idle mode and bit SREN, which is a “don't care” in
Slave mode.
If receive is enabled by setting the CREN bit prior to
entering Sleep or any idle mode, then a word may be
received while in this Low-Power mode. Once the word
is received, the RSR register will transfer the data to the
RCREG register; if the RCIE enable bit is set, the inter-
rupt generated will wake the chip from Low-Power
mode. If the global interrupt is enabled, the program will
branch to the interrupt vector.
TABLE 19-10: REGISTERS ASSOCIATED WITH SYNCHRONOUS SLAVE RECEPTION
DS39616B-page 242
INTCON
PIR1
PIE1
IPR1
RCSTA
RCREG
TXSTA
BAUDCTL
SPBRGH
SPBRG
Legend: x = unknown, – = unimplemented, read as ‘0’. Shaded cells are not used for Synchronous Slave Reception.
Name
USART Receive Register
Baud Rate Generator Register, High Byte
Baud Rate Generator Register, Low Byte
USART SYNCHRONOUS SLAVE
RECEPTION
GIE/GIEH
SPEN
CSRC
Bit 7
—
—
—
—
PEIE/GIEL
RCIDL
ADIF
ADIE
ADIP
Bit 6
RX9
TX9
TMR0IE
SREN
TXEN
RCIE
RCIP
RCIF
Bit 5
—
INT0IE
CREN
SYNC
SCKP
Bit 4
TXIF
TXIE
TXIP
Preliminary
ADDEN
SENDB
BRG16
RBIE
Bit 3
—
—
—
To set up a Synchronous Slave Reception:
1.
2.
3.
4.
5.
6.
7.
8.
9.
TMR0IF
CCP1IE
CCP1IP
CCP1IF
BRGH
FERR
Bit 2
—
Enable the synchronous master serial port by
setting bits SYNC and SPEN and clearing bit
CSRC.
If interrupts are desired, set enable bit RCIE.
If 9-bit reception is desired, set bit RX9.
To enable reception, set enable bit CREN.
Flag bit RCIF will be set when reception is com-
plete. An interrupt will be generated if 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.
If any error occurred, clear the error by clearing
bit CREN.
If using interrupts, ensure that the GIE and PEIE
bits in the INTCON register (INTCON<7:6>) are
set.
TMR2IE
TMR2IP
TMR2IF
INT0IF
OERR
TRMT
WUE
Bit 1
TMR1IF
TMR1IE
TMR1IP
ABDEN
RX9D
TX9D
RBIF
Bit 0
2003 Microchip Technology Inc.
0000 000x
0000 0000
0000 0000
-111 -111
0000 -00x
0000 0000
0000 0010
-1-1 0-00
0000 0000
0000 0000
POR, BOR
Value on
0000 000u
0000 0000
0000 0000
-111 -111
0000 -00x
0000 0000
0000 0010
-1-1 0-00
0000 0000
0000 0000
Value on
all other
Resets
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