參數(shù)資料
型號: PIC16F871-E/P
廠商: Microchip Technology
文件頁數(shù): 114/143頁
文件大小: 0K
描述: IC MCU CMOS 20MHZ 2K FLASH 40DIP
產(chǎn)品培訓(xùn)模塊: Asynchronous Stimulus
標(biāo)準(zhǔn)包裝: 10
系列: PIC® 16F
核心處理器: PIC
芯體尺寸: 8-位
速度: 20MHz
連通性: UART/USART
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 33
程序存儲器容量: 3.5KB(2K x 14)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 64 x 8
RAM 容量: 128 x 8
電壓 - 電源 (Vcc/Vdd): 4 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 8x10b
振蕩器型: 外部
工作溫度: -40°C ~ 125°C
封裝/外殼: 40-DIP(0.600",15.24mm)
包裝: 管件
配用: I3-DB16F871-ND - BOARD DAUGHTER ICEPIC3
PIC16F870/871
DS30569B-page 70
2003 Microchip Technology Inc.
9.2.3
SETTING UP 9-BIT MODE WITH
ADDRESS DETECT
When setting up an Asynchronous Reception with
Address Detect enabled:
Initialize the SPBRG register for the appropriate
baud rate. If a high speed baud rate is desired, set
bit BRGH.
Enable the asynchronous serial port by clearing
bit SYNC and setting bit SPEN.
If interrupts are desired, then set enable bit RCIE.
Set bit RX9 to enable 9-bit reception.
Set ADDEN to enable address detect.
Enable the reception by setting enable bit CREN.
Flag bit RCIF will be set when reception is com-
plete, and an interrupt will be generated if enable
bit RCIE was set.
Read the RCSTA register to get the ninth bit and
determine if any error occurred during reception.
Read the 8-bit received data by reading the
RCREG register, to determine if the device is
being addressed.
If any error occurred, clear the error by clearing
enable bit CREN.
If the device has been addressed, clear the
ADDEN bit to allow data bytes and address bytes
to be read into the receive buffer, and interrupt the
CPU.
FIGURE 9-6:
USART RECEIVE BLOCK DIAGRAM
x64 Baud Rate CLK
SPBRG
Baud Rate Generator
RC7/RX/DT
Pin Buffer
and Control
SPEN
Data
Recovery
CREN
OERR
FERR
RSR Register
MSb
LSb
RX9D
RCREG Register
FIFO
Interrupt
RCIF
RCIE
Data Bus
8
÷ 64
÷ 16
or
STOP
START
(8)
7
1
0
RX9
RX9
ADDEN
RX9
ADDEN
RSR<8>
Enable
Load of
Receive
Buffer
8
FOSC
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