參數(shù)資料
型號： MA180023
廠商： Microchip Technology
文件頁數(shù)： 8/228頁
文件大?。?/td> 0K
描述： MODULE PLUG-IN PIC18F46J11 PIM
產(chǎn)品培訓(xùn)模塊： PIC18 J Series MCU Overview
標準包裝： 1
系列： PIC®
附件類型： 插拔式模塊（PIM）- PIC18F46J11
適用于相關(guān)產(chǎn)品： HPC Explorer 板（DM183022）或 PIC18 Explorer 板（DM183032）
產(chǎn)品目錄頁面： 658 (CN2011-ZH PDF)
配用： DM183032-ND - BOARD EXPLORER PICDEM PIC18
DM183022-ND - BOARD DEMO PIC18FXX22 64/80TQFP
第1頁第2頁第3頁第4頁第5頁第6頁第7頁當(dāng)前第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁第138頁第139頁第140頁第141頁第142頁第143頁第144頁第145頁第146頁第147頁第148頁第149頁第150頁第151頁第152頁第153頁第154頁第155頁第156頁第157頁第158頁第159頁第160頁第161頁第162頁第163頁第164頁第165頁第166頁第167頁第168頁第169頁第170頁第171頁第172頁第173頁第174頁第175頁第176頁第177頁第178頁第179頁第180頁第181頁第182頁第183頁第184頁第185頁第186頁第187頁第188頁第189頁第190頁第191頁第192頁第193頁第194頁第195頁第196頁第197頁第198頁第199頁第200頁第201頁第202頁第203頁第204頁第205頁第206頁第207頁第208頁第209頁第210頁第211頁第212頁第213頁第214頁第215頁第216頁第217頁第218頁第219頁第220頁第221頁第222頁第223頁第224頁第225頁第226頁第227頁第228頁
2010 Microchip Technology Inc.
DS70138G-page 105
dsPIC30F3014/4013
16.2
Enabling and Setting Up UART
16.2.1
ENABLING THE UART
The UART module is enabled by setting the UARTEN
bit in the UxMODE register (where x = 1 or 2). Once
enabled, the UxTX and UxRX pins are configured as an
output and an input, respectively, overriding the TRIS
and LAT register bit settings for the corresponding I/O
port pins. The UxTX pin is at logic ‘1’ when no
transmission is taking place.
16.2.2
DISABLING THE UART
The UART module is disabled by clearing the UARTEN
bit in the UxMODE register. This is the default state
after any Reset. If the UART is disabled, all I/O pins
operate as port pins under the control of the LAT and
TRIS bits of the corresponding port pins.
Disabling the UART module resets the buffers to empty
states. Any data characters in the buffers are lost and
the baud rate counter is reset.
All error and status flags associated with the UART
module are reset when the module is disabled. The
URXDA, OERR, FERR, PERR, UTXEN, UTXBRK and
UTXBF bits are cleared, whereas RIDLE and TRMT
are
set.
Other
control
bits,
including
ADDEN,
URXISEL<1:0>, UTXISEL, as well as the UxMODE
and UxBRG registers, are not affected.
Clearing the UARTEN bit while the UART is active
aborts all pending transmissions and receptions and
resets the module, as defined above. Re-enabling the
UART restarts the UART in the same configuration.
16.2.3
ALTERNATE I/O
The alternate I/O function is enabled by setting the
ALTIO bit (UxMODE<10>). If ALTIO = 1, the UxATX
and UxARX pins (alternate transmit and alternate
receive pins, respectively) are used by the UART mod-
ule instead of the UxTX and UxRX pins. If ALTIO = 0,
the UxTX and UxRX pins are used by the UART
module.
16.2.4
SETTING UP DATA, PARITY AND
STOP BIT SELECTIONS
Control bits, PDSEL<1:0> in the UxMODE register, are
used to select the data length and parity used in the
transmission. The data length may either be 8 bits with
even, odd or no parity, or 9 bits with no parity.
The STSEL bit determines whether one or two Stop bits
are used during data transmission.
The default (power-on) setting of the UART is 8 bits, no
parity and 1 Stop bit (typically represented as 8, N, 1).
16.3
Transmitting Data
16.3.1
TRANSMITTING IN 8-BIT DATA
MODE
The following steps must be performed in order to
transmit 8-bit data:
1.
Set up the UART:
First, the data length, parity and number of Stop
bits must be selected. Then, the transmit and
receive interrupt enable and priority bits are set
up in the UxMODE and UxSTA registers. Also,
the appropriate baud rate value must be written
to the UxBRG register.
2.
Enable the UART by setting the UARTEN bit
(UxMODE<15>).
3.
Set the UTXEN bit (UxSTA<10>), thereby
enabling a transmission.
4.
Write the byte to be transmitted to the lower byte
of UxTXREG. The value is transferred to the
Transmit Shift register (UxTSR) immediately,
and the serial bit stream starts shifting out during
the next rising edge of the baud clock. Alterna-
tively, the data byte can be written while UTXEN
= 0, following which, the user can set UTXEN.
This causes the serial bit stream to begin imme-
diately because the baud clock starts from a
cleared state.
5.
A transmit interrupt is generated, depending on
the value of the interrupt control bit, UTXISEL
(UxSTA<15>).
16.3.2
TRANSMITTING IN 9-BIT DATA
MODE
The sequence of steps involved in the transmission of
9-bit data is similar to 8-bit transmission, except that a
16-bit data word (of which the upper 7 bits are always
clear) must be written to the UxTXREG register.
16.3.3
TRANSMIT BUFFER (UXTXB)
The transmit buffer is 9 bits wide and 4 characters
deep. Including the Transmit Shift register (UxTSR),
the user effectively has a 5-deep FIFO (First-In, First-
Out) buffer. The UTXBF status bit (UxSTA<9>)
indicates whether the transmit buffer is full.
If a user attempts to write to a full buffer, the new data
is not accepted into the FIFO, and no data shift occurs
within the buffer. This enables recovery from a buffer
overrun condition.
The FIFO is reset during any device Reset but is not
affected when the device enters or wakes up from a
power-saving mode.
相關(guān)PDF資料
PDF描述
1-1589476-8 CONN RCPT 15POS 32AWG 24IN
0210490389 CABLE JUMPER 1.25MM .051M 32POS
0982660969 CBL 27POS 0.5MM JMPR TYPE A 3"
1-1589457-4 CONN RCPT 15POS 30AWG 24IN
0982660968 CBL 27POS 0.5MM JMPR TYPE D 3"
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MA180024 功能描述:子卡和OEM板 PIC18F46J50 FS USB PIM DEMO BOARD RoHS:否 制造商:BeagleBoard by CircuitCo 產(chǎn)品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit
MA180025 功能描述:子卡和OEM板 PIM for PIC18F87J90 w/ Cap Touch buttons RoHS:否 制造商:BeagleBoard by CircuitCo 產(chǎn)品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit
MA180026 功能描述:子卡和OEM板 PIC18F45K20 44P TQFP to 84P PIM RoHS:否 制造商:BeagleBoard by CircuitCo 產(chǎn)品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit
MA180027 功能描述:子卡和OEM板 PIC18F87K90 PIM w/ Cap Touch RoHS:否 制造商:BeagleBoard by CircuitCo 產(chǎn)品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit
MA180028 功能描述:子卡和OEM板 PIC18F87K22 Plug-In Module RoHS:否 制造商:BeagleBoard by CircuitCo 產(chǎn)品:BeagleBone LCD4 Boards 用于:BeagleBone - BB-Bone - Open Source Development Kit
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*