PIC18F43K22T-I/ML Microchip Technology Inc., PIC18F43K22T-I/ML Datasheet - Page 288
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PIC18F43K22T-I/ML
Manufacturer Part Number
PIC18F43K22T-I/ML
Description
8KB, FLASH, 3968BYTES-RAM, 8-BIT FAMILY, NANOWATT XLP, 44 QFN 8X8X0.9MM T/R
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC18F45K22-IP.pdf
(496 pages)
Specifications of PIC18F43K22T-I/ML
A/d Inputs
28-Channel, 10-Bit
Comparators
2
Cpu Speed
16 MIPS
Eeprom Memory
1K Bytes
Input Output
35
Interface
I2C/SPI/UART/USART
Memory Type
Flash
Number Of Bits
8
Package Type
40-pin QFN
Programmable Memory
8K Bytes
Ram Size
512 Bytes
Speed
48 MHz
Temperature Range
–40 to 125 °C
Timers
1-8-bit, 3-16-bit
Voltage, Range
1.8-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
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PIC18(L)F2X/4XK22
16.4.2
The following bits are used to configure the EUSART
for Synchronous slave operation:
• SYNC = 1
• CSRC = 0
• SREN = 0 (for transmit); SREN = 1 (for receive)
• CREN = 0 (for transmit); CREN = 1 (for receive)
• SPEN = 1
Setting the SYNC bit of the TXSTAx register configures
the device for synchronous operation. Clearing the
CSRC bit of the TXSTAx register configures the device
as a slave. Clearing the SREN and CREN bits of the
RCSTAx register ensures that the device is in the
Transmit mode, otherwise the device will be configured to
receive. Setting the SPEN bit of the RCSTAx register
enables the EUSART. If the RXx/DTx or TXx/CKx pins
are shared with an analog peripheral the analog I/O
functions must be disabled by clearing the corresponding
ANSEL bits.
RXx/DTx and TXx/CKx pin output drivers must be
disabled by setting the corresponding TRIS bits.
DS41412D-page 288
SYNCHRONOUS SLAVE MODE
Preliminary
16.4.2.1
The operation of the Synchronous Master and Slave
modes
“Synchronous Master
case of the Sleep mode.
If two words are written to the TXREGx and then the
SLEEP instruction is executed, the following will occur:
1.
2.
3.
4.
5.
16.4.2.2
1.
2.
3.
4.
5.
6.
7.
8.
The first character will immediately transfer to
the TSR register and transmit.
The second word will remain in TXREGx
register.
The TXxIF bit will not be set.
After the first character has been shifted out of
TSR, the TXREGx register will transfer the
second character to the TSR and the TXxIF bit
will now be set.
If the PEIE/GIEL and TXxIE bits are set, the
interrupt will wake the device from Sleep and
execute the next instruction. If the GIE/GIEH bit
is also set, the program will call the Interrupt
Service Routine.
Set the SYNC and SPEN bits and clear the
CSRC bit.
Set the RXx/DTx and TXx/CKx TRIS controls to
‘1’.
Clear the CREN and SREN bits.
If using interrupts, ensure that the GIE/GIEH
and PEIE/GIEL bits of the INTCON register are
set and set the TXxIE bit.
If 9-bit transmission is desired, set the TX9 bit.
Enable transmission by setting the TXEN bit.
If 9-bit transmission is selected, insert the Most
Significant bit into the TX9D bit.
Start
Significant 8 bits to the TXREGx register.
are
transmission
EUSART Synchronous Slave
Transmit
Synchronous Slave Transmission
Setup:
identical
2010 Microchip Technology Inc.
Transmission”), except in the
by
(see
writing
Section 16.4.1.3
the
Least
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