參數(shù)資料
型號(hào)： DSPIC30F4013-30I/PT
廠商： Microchip Technology
文件頁數(shù)： 9/153頁
文件大?。?/td> 0K
描述： IC DSPIC MCU/DSP 48K 44TQFP
產(chǎn)品培訓(xùn)模塊： Serial Communications using dsPIC30F CAN
Serial Communications using dsPIC30F I2C
Serial Communications using dsPIC30F SPI
Serial Communications using dsPIC30F UART
dsPIC30F 12 bit ADC - Part 2
dsPIC30F Addressing Modes - Part 1
dsPIC30F Architecture - Part 1
dsPIC30F DSP Engine & ALU
dsPIC30F Interrupts
dsPIC30F Motor Control PWM
dsPIC Timers
Asynchronous Stimulus
dsPIC30F Addressing Modes - Part 2
dsPIC30F Architecture - Part 2
dsPIC30F 12-bit ADC Part 1
標(biāo)準(zhǔn)包裝： 160
系列： dsPIC™ 30F
核心處理器： dsPIC
芯體尺寸： 16-位
速度： 30 MIP
連通性： CAN，I²C，SPI，UART/USART
外圍設(shè)備： AC'97，欠壓檢測(cè)/復(fù)位，I²S，POR，PWM，WDT
輸入/輸出數(shù)： 30
程序存儲(chǔ)器容量： 48KB（16K x 24）
程序存儲(chǔ)器類型： 閃存
EEPROM 大小： 1K x 8
RAM 容量： 2K x 8
電壓 - 電源 (Vcc/Vdd)： 2.5 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 13x12b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 44-TQFP
包裝： 托盤
產(chǎn)品目錄頁面： 651 (CN2011-ZH PDF)
配用： XLT44PT3-ND - SOCKET TRAN ICE 44MQFP/TQFP
AC164305-ND - MODULE SKT FOR PM3 44TQFP
DV164005-ND - KIT ICD2 SIMPLE SUIT W/USB CABLE
其它名稱： DSPIC30F401330IPT
dsPIC30F3014/4013
DS70138G-page 106
2010 Microchip Technology Inc.
16.3.4
TRANSMIT INTERRUPT
The transmit interrupt flag (U1TXIF or U2TXIF) is
located in the corresponding interrupt flag register.
The transmitter generates an edge to set the UxTXIF
bit. The condition for generating the interrupt depends
on the UTXISEL control bit:
a)
If UTXISEL = 0, an interrupt is generated when
a word is transferred from the transmit buffer to
the Transmit Shift register (UxTSR). This means
that the transmit buffer has at least one empty
word.
b)
If UTXISEL = 1, an interrupt is generated when
a word is transferred from the transmit buffer to
the Transmit Shift register (UxTSR) and the
transmit buffer is empty.
Switching between the two Interrupt modes during
operation is possible and sometimes offers more
flexibility.
16.3.5
TRANSMIT BREAK
Setting the UTXBRK bit (UxSTA<11>) causes the
UxTX line to be driven to logic ‘0’. The UTXBRK bit
overrides all transmission activity. Therefore, the user
should generally wait for the transmitter to be Idle
before setting UTXBRK.
To send a Break character, the UTXBRK bit must be set
by software and must remain set for a minimum of
13 baud clock cycles. The UTXBRK bit is then cleared
by software to generate Stop bits. The user must wait
for a duration of at least one or two baud clock cycles
in order to ensure a valid Stop bit(s) before reloading
the UxTXB, or starting other transmitter activity. Trans-
mission of a Break character does not generate a
transmit interrupt.
16.4
Receiving Data
16.4.1
RECEIVING IN 8-BIT OR 9-BIT
DATA MODE
The following steps must be performed while receiving
8-bit or 9-bit data:
1.
Set
up
the
UART
(see
2.
Enable
the
UART
(see
3.
A receive interrupt is generated when one or
more data words have been received, depend-
ing on the receive interrupt settings specified by
the URXISEL bits (UxSTA<7:6>).
4.
Read the OERR bit to determine if an overrun
error has occurred. The OERR bit must be reset
in software.
5.
Read the received data from UxRXREG. The act
of reading UxRXREG moves the next word to
the top of the receive FIFO, and the PERR and
FERR values are updated.
16.4.2
RECEIVE BUFFER (UXRXB)
The receive buffer is 4 words deep. Including the
Receive Shift register (UxRSR), the user effectively
has a 5-word deep FIFO buffer.
URXDA (UxSTA<0>) = 1 indicates that the receive
buffer has data available. URXDA = 0 means that the
buffer is empty. If a user attempts to read an empty buf-
fer, the old values in the buffer are read and no data
shift occurs within the FIFO.
The FIFO is reset during any device Reset. It is not
affected when the device enters or wakes up from a
power-saving mode.
16.4.3
RECEIVE INTERRUPT
The receive interrupt flag (U1RXIF or U2RXIF) can be
read from the corresponding interrupt flag register. The
interrupt flag is set by an edge generated by the
receiver. The condition for setting the receive interrupt
flag depends on the settings specified by the
URXISEL<1:0> (UxSTA<7:6>) control bits.
a)
If URXISEL<1:0> = 00 or 01, an interrupt is gen-
erated every time a data word is transferred
from the Receive Shift register (UxRSR) to the
receive buffer. There may be one or more
characters in the receive buffer.
b)
If URXISEL<1:0> = 10, an interrupt is generated
when a word is transferred from the Receive Shift
register (UxRSR) to the receive buffer, which as a
result of the transfer, contains 3 characters.
c)
If URXISEL<1:0> = 11, an interrupt is set when
a word is transferred from the Receive Shift
register (UxRSR) to the receive buffer, which as
a result of the transfer, contains 4 characters
(i.e., becomes full).
Switching between the Interrupt modes during opera-
tion is possible, though generally not advisable during
normal operation.
16.5
Reception Error Handling
16.5.1
RECEIVE BUFFER OVERRUN
ERROR (OERR BIT)
The OERR bit (UxSTA<1>) is set if all of the following
conditions occur:
a)
The receive buffer is full.
b)
The Receive Shift register is full, but unable to
transfer the character to the receive buffer.
c)
The Stop bit of the character in the UxRSR is
detected, indicating that the UxRSR needs to
transfer the character to the buffer.
Once OERR is set, no further data is shifted in UxRSR
(until the OERR bit is cleared in software or a Reset
occurs). The data held in UxRSR and UxRXREG
remains valid.
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