參數(shù)資料
型號(hào)： PIC12F1822-I/MF
廠商： Microchip Technology
文件頁(yè)數(shù)： 18/109頁(yè)
文件大?。?/td> 0K
描述： IC MCU 8BIT FLASH 8DFN
產(chǎn)品培訓(xùn)模塊： 8-bit PIC® Microcontroller Portfolio
標(biāo)準(zhǔn)包裝： 120
系列： PIC® XLP™ 12F
核心處理器： PIC
芯體尺寸： 8-位
速度： 32MHz
連通性： I²C，LIN，SPI，UART/USART
外圍設(shè)備： 欠壓檢測(cè)/復(fù)位，POR，PWM，WDT
輸入/輸出數(shù)： 6
程序存儲(chǔ)器容量： 3.5KB（2K x 14）
程序存儲(chǔ)器類型： 閃存
EEPROM 大小： 256 x 8
RAM 容量： 128 x 8
電壓 - 電源 (Vcc/Vdd)： 1.8 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 4x10b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 8-VDFN 裸露焊盤
包裝： 管件
207
7674F–AVR–09/09
ATmega164P/324P/644P
18.8.3
UCSRnB – USART MSPIM Control and Status Register n B
Bit 7 - RXCIEn: RX Complete Interrupt Enable
Writing this bit to one enables interrupt on the RXCn Flag. A USART Receive Complete interrupt
will be generated only if the RXCIEn bit is written to one, the Global Interrupt Flag in SREG is
written to one and the RXCn bit in UCSRnA is set.
Bit 6 - TXCIEn: TX Complete Interrupt Enable
Writing this bit to one enables interrupt on the TXCn Flag. A USART Transmit Complete interrupt
will be generated only if the TXCIEn bit is written to one, the Global Interrupt Flag in SREG is
written to one and the TXCn bit in UCSRnA is set.
Bit 5 - UDRIE: USART Data Register Empty Interrupt Enable
Writing this bit to one enables interrupt on the UDREn Flag. A Data Register Empty interrupt will
be generated only if the UDRIE bit is written to one, the Global Interrupt Flag in SREG is written
to one and the UDREn bit in UCSRnA is set.
Bit 4 - RXENn: Receiver Enable
Writing this bit to one enables the USART Receiver in MSPIM mode. The Receiver will override
normal port operation for the RxDn pin when enabled. Disabling the Receiver will flush the
receive buffer. Only enabling the receiver in MSPI mode (i.e. setting RXENn=1 and TXENn=0)
has no meaning since it is the transmitter that controls the transfer clock and since only master
mode is supported.
Bit 3 - TXENn: Transmitter Enable
Writing this bit to one enables the USART Transmitter. The Transmitter will override normal port
operation for the TxDn pin when enabled. The disabling of the Transmitter (writing TXENn to
zero) will not become effective until ongoing and pending transmissions are completed, i.e.,
when the Transmit Shift Register and Transmit Buffer Register do not contain data to be trans-
mitted. When disabled, the Transmitter will no longer override the TxDn port.
Bit 2:0 - Reserved Bits in MSPI mode
When in MSPI mode, these bits are reserved for future use. For compatibility with future devices,
these bits must be written to zero when UCSRnB is written.
Bit
7
6
5
4
3
210
RXCIEn
TXCIEn
UDRIE
RXENn
TXENn
-
UCSRnB
Read/Write
R/W
R
Initial Value
0
1
0
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