PIC18F65K90-I/PTRSL Microchip Technology, PIC18F65K90-I/PTRSL Datasheet - Page 365
![MCU PIC 32K FLASH MEM XLP 64TQFP](/photos/6/81/68123/c04-066_pf_sml.jpg)
PIC18F65K90-I/PTRSL
Manufacturer Part Number
PIC18F65K90-I/PTRSL
Description
MCU PIC 32K FLASH MEM XLP 64TQFP
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Specifications of PIC18F65K90-I/PTRSL
Core Size
8-Bit
Program Memory Size
32KB (16K x 16)
Core Processor
PIC
Speed
64MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
53
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 16x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TFQFP
Controller Family/series
PIC18
Eeprom Memory Size
1024Byte
Ram Memory Size
2048Byte
Cpu Speed
16MIPS
No. Of Timers
8
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F65K90-I/PTRSL
Manufacturer:
Microchip Technology
Quantity:
10 000
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22.3
The Synchronous Master mode is entered by setting
the CSRC bit (TXSTAx<7>). In this mode, the data is
transmitted in a half-duplex manner (i.e., transmission
and reception do not occur at the same time). When
transmitting data, the reception is inhibited and vice
versa. Synchronous mode is entered by setting bit,
SYNC (TXSTAx<4>). In addition, enable bit, SPEN
(RCSTAx<7>), is set in order to configure the TXx and
RXx pins to CKx (clock) and DTx (data) lines,
respectively.
The Master mode indicates that the processor trans-
mits the master clock on the CKx line. Clock polarity is
selected with the TXCKP bit (BAUDCONx<4>). Setting
TXCKP sets the Idle state on CKx as high, while clear-
ing the bit sets the Idle state as low. This option is
provided to support Microwire devices with this module.
22.3.1
The EUSART transmitter block diagram is shown in
Figure 22-3. The heart of the transmitter is the Transmit
(Serial) Shift Register (TSR). The TSR register obtains
its data from the Read/Write Transmit Buffer register,
TXREGx. The TXREGx register is loaded with data in
software. The TSR register is not loaded until the last
bit has been transmitted from the previous load. As
soon as the last bit is transmitted, the TSR is loaded
with new data from the TXREGx (if available).
FIGURE 22-11:
2010 Microchip Technology Inc.
(TXCKP = 0)
(TXCKP = 1)
RC6/TX1/CK1/
SEG27 Pin
RC6/TX1/CK1/
SEG27 Pin
RC7/RX1/DT1/
SEG28 Pin
Write to
TXREG1 Reg
TX1IF bit
(Interrupt Flag)
TRMT bit
TXEN bit
Note: Sync Master mode, SPBRGx = 0, continuous transmission of two 8-bit words. This example is equally applicable to EUSART2
(RG1/TX2/CK2/AN19/C3OUT and RG2/RX2/DT2/AN18/C3INA).
EUSART Synchronous
Master Mode
EUSART SYNCHRONOUS MASTER
TRANSMISSION
Q1 Q2 Q3Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1Q2 Q3 Q4 Q1 Q2 Q3 Q4
‘1’
Write Word 1
SYNCHRONOUS TRANSMISSION
bit 0
Write Word 2
bit 1
Word 1
bit 2
Preliminary
Q3 Q4 Q1 Q2 Q3 Q4 Q1Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
PIC18F87K90 FAMILY
Once the TXREGx register transfers the data to the
TSR register (occurs in one T
and the TXxIF flag bit is set. The interrupt can be
enabled or disabled by setting or clearing the interrupt
enable bit, TXxIE. TXxIF is set regardless of the state
of enable bit, TXxIE; it cannot be cleared in software. It
will reset only when new data is loaded into the
TXREGx register.
While flag bit, TXxIF, indicates the status of the TXREGx
register, another bit, TRMT (TXSTAx<1>), shows the
status of the TSR register. TRMT is a read-only bit which
is set when the TSR is empty. No interrupt logic is tied to
this bit, so the user must poll this bit in order to determine
if the TSR register is empty. The TSR is not mapped in
data memory so it is not available to the user.
To set up a Synchronous Master Transmission:
1.
2.
3.
4.
5.
6.
7.
8.
bit 7
Initialize the SPBRGHx:SPBRGx 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.
If interrupts are desired, set enable bit, TXxIE.
If 9-bit transmission is desired, set bit, TX9.
Enable the transmission by setting bit, TXEN.
If 9-bit transmission is selected, the ninth bit
should be loaded in bit, TX9D.
Start transmission by loading data to the
TXREGx register.
If using interrupts, ensure that the GIE and PEIE
bits in the INTCON register (INTCON<7:6>) are
set.
bit 0
Word 2
bit 1
CY
), the TXREGx is empty
DS39957B-page 365
bit 7
‘1’
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