PIC18F13K22-I/P Microchip Technology, PIC18F13K22-I/P Datasheet - Page 194
![IC MCU 8BIT 8KB FLASH 20DIP](/photos/12/13/121303/150-20-dip_sml.jpg)
PIC18F13K22-I/P
Manufacturer Part Number
PIC18F13K22-I/P
Description
IC MCU 8BIT 8KB FLASH 20DIP
Manufacturer
Microchip Technology
Series
PIC® XLP™ 18Fr
Datasheets
1.PIC18LF13K22-ISS.pdf
(388 pages)
2.PIC18LF13K22-ISS.pdf
(12 pages)
3.PIC18F13K22-ISS.pdf
(382 pages)
Specifications of PIC18F13K22-I/P
Program Memory Type
FLASH
Program Memory Size
8KB (4K x 16)
Package / Case
20-DIP (0.300", 7.62mm)
Core Processor
PIC
Core Size
8-Bit
Speed
64MHz
Connectivity
I²C, LIN, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
17
Eeprom Size
256 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Processor Series
PIC18F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
I2C, MSSP, SPI, USART
Maximum Clock Frequency
64 MHz
Number Of Programmable I/os
17
Number Of Timers
4
Operating Supply Voltage
1.8 V to 5.5 V
Maximum Operating Temperature
+ 125 C
Mounting Style
Through Hole
3rd Party Development Tools
52715-96, 52716-328, 52717-734, 52712-325, EWPIC18
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 12 Channel
Package
20PDIP
Device Core
PIC
Family Name
PIC18
Maximum Speed
64 MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
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PIC18F1XK22/LF1XK22
15.3.4
The EUSART module has the capability of sending the
special Break character sequences that are required by
the LIN bus standard. A Break character consists of a
Start bit, followed by 12 ‘0’ bits and a Stop bit.
To send a Break character, set the SENDB and TXEN
bits of the TXSTA register. The Break character trans-
mission is then initiated by a write to the TXREG. The
value of data written to TXREG will be ignored and all
‘0’s will be transmitted.
The SENDB bit is automatically reset by hardware after
the corresponding Stop bit is sent. This allows the user
to preload the transmit FIFO with the next transmit byte
following the Break character (typically, the Sync
character in the LIN specification).
The TRMT bit of the TXSTA register indicates when the
transmit operation is active or Idle, just as it does during
normal transmission. See Figure 15-9 for the timing of
the Break character sequence.
15.3.4.1
The following sequence will start a message frame
header made up of a Break, followed by an auto-baud
Sync byte. This sequence is typical of a LIN bus
master.
1.
2.
3.
4.
FIGURE 15-9:
DS41365B-page 192
Reg. Empty Flag)
Write to TXREG
(Transmit Shift
Configure the EUSART for the desired mode.
Set the TXEN and SENDB bits to enable the
Break sequence.
Load the TXREG with a dummy character to
initiate transmission (the value is ignored).
Write ‘55h’ to TXREG to load the Sync character
into the transmit FIFO buffer.
interrupt Flag)
(send Break
BRG Output
(Shift Clock)
control bit)
(Transmit
TRMT bit
TX (pin)
TXIF bit
SENDB
BREAK CHARACTER SEQUENCE
Break and Sync Transmit Sequence
SEND BREAK CHARACTER SEQUENCE
Dummy Write
SENDB Sampled Here
Start bit
bit 0
Preliminary
bit 1
Break
5.
When the TXREG becomes empty, as indicated by the
TXIF, the next data byte can be written to TXREG.
15.3.5
The Enhanced EUSART module can receive a Break
character in two ways.
The first method to detect a Break character uses the
FERR bit of the RCSTA register and the Received data
as indicated by RCREG. The Baud Rate Generator is
assumed to have been initialized to the expected baud
rate.
A Break character has been received when;
• RCIF bit is set
• FERR bit is set
• RCREG = 00h
The second method uses the Auto-Wake-up feature
described in Section 15.3.3 “Auto-Wake-up on
Break”. By enabling this feature, the EUSART will
sample the next two transitions on RX/DT, cause an
RCIF interrupt, and receive the next data byte followed
by another interrupt.
Note that following a Break character, the user will
typically want to enable the Auto-Baud Detect feature.
For both methods, the user can set the ABDEN bit of
the BAUDCON register before placing the EUSART in
Sleep mode.
After the Break has been sent, the SENDB bit is
reset by hardware and the Sync character is
then transmitted.
RECEIVING A BREAK CHARACTER
bit 11
Auto Cleared
© 2009 Microchip Technology Inc.
Stop bit
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