PIC16F1827-I/ML Microchip Technology, PIC16F1827-I/ML Datasheet - Page 307
![IC, 8BIT MCU, PIC16F, 32MHZ, QFN-28](/photos/6/81/68120/150-28-qfn_sml.jpg)
PIC16F1827-I/ML
Manufacturer Part Number
PIC16F1827-I/ML
Description
IC, 8BIT MCU, PIC16F, 32MHZ, QFN-28
Manufacturer
Microchip Technology
Series
PIC® XLP™ 16Fr
Datasheets
1.PIC16F722-ISS.pdf
(8 pages)
2.PIC16F1826-IP.pdf
(406 pages)
3.PIC16F1826-IP.pdf
(12 pages)
4.PIC16F1826-IP.pdf
(8 pages)
5.PIC16F1826-IP.pdf
(40 pages)
6.PIC16LF1827-ISS.pdf
(400 pages)
Specifications of PIC16F1827-I/ML
Controller Family/series
PIC16F
Eeprom Memory Size
256Byte
Ram Memory Size
384Byte
Cpu Speed
32MHz
No. Of Timers
5
Interface
EUSART, I2C, SPI
Core Size
8 Bit
Program Memory Size
4kWords
Core Processor
PIC
Speed
32MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
16
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
384 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
Package / Case
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
Processor Series
PIC16F
Core
PIC
Data Bus Width
8 bit
Data Ram Size
384 B
Interface Type
I2C, SPI, UART
Maximum Clock Frequency
32 MHz
Number Of Programmable I/os
15
Number Of Timers
5
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
52715-96, 52716-328, 52717-734
Development Tools By Supplier
PG164130, DV164035, DV244005, DV164005
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 12 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
- PIC16F722-ISS PDF datasheet
- PIC16F1826-IP PDF datasheet #2
- PIC16F1826-IP PDF datasheet #3
- PIC16F1826-IP PDF datasheet #4
- PIC16F1826-IP PDF datasheet #5
- PIC16LF1827-ISS PDF datasheet #6
- Current page: 307 of 400
- Download datasheet (7Mb)
25.3.4
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 25-9 for the timing of
the Break character sequence.
25.3.4.1
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.
5.
When the TXREG becomes empty, as indicated by the
TXIF, the next data byte can be written to TXREG.
FIGURE 25-9:
© 2009 Microchip Technology Inc.
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.
After the Break has been sent, the SENDB bit is
reset by hardware and the Sync character is
then transmitted.
Interrupt Flag)
(send Break
BRG Output
(Shift Clock)
Empty Flag)
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
25.3.5
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 25.3.3 “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.
PIC16F/LF1826/27
RECEIVING A BREAK CHARACTER
bit 11
Auto Cleared
Stop bit
DS41391B-page 307
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