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| 型號： | EVAL-ADUC812QSZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 29/57頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVALUATION FOR ADUC812 |
| 產(chǎn)品培訓(xùn)模塊： | Process Control |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | QuickStart™ 套件 |
| 類型： | MCU |
| 適用于相關(guān)產(chǎn)品： | ADuC812 |
| 所含物品： | 評估板、電源、纜線、軟件和說明文檔 |
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REV.
ADuC812
–35–
UART SERIAL INTERFACE
The serial port is full-duplex, meaning it can transmit and receive
simultaneously. It is also receive-buffered, meaning it can begin
receiving a second byte before a previously received byte has been
read from the receive register. However, if the first byte still has
not been read by the time reception of the second byte is com-
plete, the first byte will be lost. The physical interface to the
serial data network is via Pins RXD(P3.0) and TXD(P3.1)
while the SFR interface to the UART is comprised of SBUF
and SCON, as described below.
SBUF
The serial port receive and transmit registers are both accessed
through the SBUF SFR (SFR address = 99H). Writing to
SBUF loads the transmit register and reading SBUF accesses a
physically separate receive register.
UART Serial Port
SCON
Control Register
SFR Address
98H
Power-On Default Value
00H
Bit Addressable
Yes
0
M
S1
M
S2
M
SN
E
R8
B
T8
B
RI
TI
R
Table XIX. SCON SFR Bit Designations
Bit
Name
Description
7
SM0
UART Serial Mode Select Bits.
6
SM1
These bits select the Serial Port operating mode as follows:
SM0
SM1
Selected Operating Mode
0
Mode 0: Shift Register, fixed baud rate (Core_Clk/2)
0
1
Mode 1: 8-bit UART, variable baud rate
1
0
Mode 2: 9-bit UART, fixed baud rate (Core_Clk/64) or (Core_Clk/32)
1
Mode 3: 9-bit UART, variable baud rate
5
SM2
Multiprocessor Communication Enable Bit.
Enables multiprocessor communication in Modes 2 and 3. In Mode 0, SM2 should be cleared.
In Mode 1, if SM2 is set, RI will not be activated if a valid stop bit was not received. If SM2 is
cleared, RI will be set as soon as the byte of data has been received. In Modes 2 or 3, if SM2 is
set, RI will not be activated if the received ninth data bit in RB8 is 0. If SM2 is cleared, RI will
be set as soon as the byte of data has been received.
4
REN
Serial Port Receive Enable Bit.
Set by user software to enable serial port reception.
Cleared by user software to disable serial port reception.
3
TB8
Serial Port Transmit (Bit 9).
The data loaded into TB8 will be the ninth data bit that will be transmitted in Modes 2 and 3.
2
RB8
Serial Port Receiver Bit 9.
The ninth data bit received in Modes 2 and 3 is latched into RB8. For Mode 1, the stop bit is
latched into RB8.
1
TI
Serial Port Transmit Interrupt Flag.
Set by hardware at the end of the eighth bit in Mode 0, or at the beginning of the stop bit in
Modes 1, 2, and 3. TI must be cleared by user software.
0
RI
Serial Port Receive Interrupt Flag.
Set by hardware at the end of the eighth bit in Mode 0, or halfway through the stop bit in
Modes 1, 2, and 3. RI must be cleared by software.
F
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|---|---|
| EVAL-ADUC814MK | 制造商:Analog Devices 功能描述:Evaluation Board For Micro-Converter, Small Packag 12-Bit ADC With Embedded Flash MCU 制造商:Analog Devices 功能描述:MICROCONVEMICROCNVRTR, SMALL PACKAG 12-BIT ADC W/ EMBEDDED F - Bulk 制造商:Analog Devices 功能描述:Microcontroller Development Tool |
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| EVAL-ADUC814QS-U | 制造商:Analog Devices 功能描述:QUICK START DEVL SYST EVAL BOARD I.C. - Bulk |
| EVAL-ADUC814QSZ | 功能描述:KIT DEV FOR ADUC814 MICROCONVRTR RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 通用嵌入式開發(fā)板和套件（MCU、DSP、FPGA、CPLD等） 系列:QuickStart™ 套件 標(biāo)準(zhǔn)包裝:1 系列:PICDEM™ 類型:MCU 適用于相關(guān)產(chǎn)品:PIC10F206，PIC16F690，PIC16F819 所含物品:板，線纜，元件，CD，PICkit 編程器 產(chǎn)品目錄頁面:659 (CN2011-ZH PDF) |
| EVAL-ADUC814QSZ | 制造商:Analog Devices 功能描述:EVAL BOARD, ADUC814 8052 CORE ANALOG MCU |
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