PIC18F8410-E/PT Microchip Technology, PIC18F8410-E/PT Datasheet - Page 234
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PIC18F8410-E/PT
Manufacturer Part Number
PIC18F8410-E/PT
Description
IC PIC MCU FLASH 16KX16 80TQFP
Manufacturer
Microchip Technology
Series
PIC® 18Fr
Datasheets
1.PIC18F6310-IPT.pdf
(412 pages)
2.PIC18F6310-IPT.pdf
(16 pages)
3.PIC18F6310-IPT.pdf
(4 pages)
4.PIC18F6310-IPT.pdf
(28 pages)
5.PIC18F6310-IPT.pdf
(6 pages)
6.PIC18F6310-IPT.pdf
(4 pages)
Specifications of PIC18F8410-E/PT
Core Processor
PIC
Core Size
8-Bit
Speed
40MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, HLVD, POR, PWM, WDT
Number Of I /o
70
Program Memory Size
16KB (8K x 16)
Program Memory Type
FLASH
Ram Size
768 x 8
Voltage - Supply (vcc/vdd)
4.2 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
80-TFQFP
For Use With
XLT80PT3 - SOCKET TRAN ICE 80MQFP/TQFPAC164320 - MODULE SKT MPLAB PM3 80TQFPAC174011 - MODULE SKT PROMATEII 80TQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PIC18F8410-E/PT
Manufacturer:
Microchip Technology
Quantity:
10 000
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PIC18F6310/6410/8310/8410
18.2.5
The Enhanced USART module has the capability of
sending the special Break character sequences that are
required by the LIN/J2602 bus standard. The Break
character transmit consists of a Start bit, followed by
twelve ‘0’ bits and a Stop bit. The Frame Break character
is sent whenever the SENDB and TXEN bits
(TXSTA<3> and TXSTA<5>) are set while the Transmit
Shift register is loaded with data. Note that the value of
data written to TXREG1 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/J2602 specification).
Note that the data value written to the TXREG1 for the
Break character is ignored. The write simply serves the
purpose of initiating the proper sequence.
The TRMT bit indicates when the transmit operation is
active or Idle, just as it does during normal transmis-
sion. See
character sequence.
18.2.5.1
The following sequence will send a message frame
header made up of a Break, followed by an Auto-Baud
Sync byte. This sequence is typical of a LIN/J2602 bus
1.
2.
FIGURE 18-10:
DS39635C-page 234
Reg. Empty Flag)
Reg. Empty Flag)
Reg. Empty Flag)
Write to TXREG1
Configure the EUSART for the desired mode.
Set the TXEN and SENDB bits to set up the
Break character.
(Transmit Buffer
(Transmit Shift
(Transmit Shift
BRG Output
(Shift Clock)
TX1 (pin)
TRMT bit
TX1IF bit
Figure 18-10
SENDB
BREAK CHARACTER SEQUENCE
Break and Sync Transmit Sequence
SEND BREAK CHARACTER SEQUENCE
Dummy Write
for the timing of the Break
SENDB sampled here
Start bit
bit 0
bit 1
Break
3.
4.
5.
When the TXREG1 becomes empty, as indicated by the
TX1IF bit, the next data byte can be written to TXREG1.
18.2.6
The Enhanced USART module can receive a Break
character in two ways.
The first method forces configuration of the baud rate
at a frequency of 9/13 the typical speed. This allows for
the Stop bit transition to be at the correct sampling
location (13 bits for Break versus Start bit and 8 data
bits for typical data).
The second method uses the auto-wake-up feature
described in
Break
EUSART will sample the next two transitions on
RX1/DT1, cause an RC1IF 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 Rate Detect
feature. For both methods, the user can set the ABD bit
once the TX1IF interrupt is observed.
Load the TXREG1 with a dummy character to
initiate transmission (the value is ignored).
Write ‘55h’ to TXREG1 to load the Sync
character into the transmit FIFO buffer.
After the Break has been sent, the SENDB bit is
reset by hardware. The Sync character now
transmits in the preconfigured mode.
Character”. By enabling this feature, the
RECEIVING A BREAK CHARACTER
Section 18.2.4 “Auto-Wake-up on Sync
bit 11
Auto-Cleared
2010 Microchip Technology Inc.
Stop bit
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