- 您現在的位置：買賣IC網 > PDF目錄374039 > ADUC814BRU-REEL7 (ANALOG DEVICES INC) Circular Connector; No. of Contacts:61; Series:LJT07R; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:25; Circular Contact Gender:Pin; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:25-61 PDF資料下載
參數資料
| 型號： | ADUC814BRU-REEL7 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | Circular Connector; No. of Contacts:61; Series:LJT07R; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:25; Circular Contact Gender:Pin; Circular Shell Style:Jam Nut Receptacle; Insert Arrangement:25-61 |
| 中文描述： | 8-BIT, FLASH, 16.78 MHz, MICROCONTROLLER, PDSO28 |
| 封裝： | 4.40 X 9.70 MM, MO-153AE, TSSOP-28 |
| 文件頁數： | 55/72頁 |
| 文件大小： | 846K |
| 代理商： | ADUC814BRU-REEL7 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第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頁當前第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
ADuC814
Mode 2: 9-Bit UART with Fixed Baud Rate
Mode 2 is selected by setting SM0 and clearing SM1. In this
mode, the UART operates in 9-bit mode with a fixed baud rate.
The baud rate is fixed at Core_Clk/64 by default, although by
setting the SMOD bit in PCON, the frequency can be doubled
to Core_Clk/32. Eleven bits are transmitted or received, a start
bit (Bit 0), eight data bits, a programmable ninth bit, and a stop
bit (Bit 1). The ninth bit is most often used as a parity bit,
although it can be used for anything, including a ninth data bit
if required.
Rev. A | Page 55 of 72
To transmit, the eight data bits must be written into SBUF. The
ninth bit must be written into TB8 in SCON. When
transmission is initiated, the eight data bits (from SBUF) are
loaded into the transmit shift register (LSB first). The contents
of TB8 are loaded into the ninth bit position of the transmit
shift register. The transmission starts at the next valid baud rate
clock. The TI flag is set as soon as the stop bit appears on TxD.
Reception for Mode 2 is similar to that of Mode 1. The eight
data bytes are input at RxD (LSB first) and loaded into the
receive shift register. When all eight bits have been clocked in,
the following events occur:
The eight bits in the receive shift register are latched into
SBUF.
The ninth data bit is latched into RB8 in SCON.
The receiver interrupt flag (RI) is set if, and only if, the
following conditions are met at the time the final shift
pulse is generated:
o
RI = 0
o
Either SM2 = 0 or
SM2 = 1 and the received stop bit = 1
If either of these conditions is not met, the received frame
is irretrievably lost, and RI is not set.
Mode 3: 9-Bit UART with Variable Baud Rate
Mode 3 is selected by setting both SM0 and SM1. In this mode,
the 8051 UART serial port operates in 9-bit mode with a
variable baud rate determined by either Timer 1 or Timer 2.
The operation of the 9-bit UART is the same as for Mode 2 but
the baud rate can be varied as for Mode 1.
In all four modes, transmission is initiated by any instruction
that uses SBUF as a destination register. Reception is initiated in
Mode 0 by the condition RI = 0 and REN = 1. Reception is
initiated in the other modes by the incoming start bit if REN = 1.
UART Serial Port Baud Rate Generation
In these descriptions that follow,
Core Clock Frequency
refers to
the core clock frequency selected via the CD0–CD2 bits in the
PLLCON SFR.
Mode 0 Baud Rate Generation
The baud rate in Mode 0 is fixed:
Mode 0 Baud Rate
= (
Core Clock Frequency
/12)
Mode 2 Baud Rate Generation
The baud rate in Mode 2 depends on the value of the SMOD bit
in the PCON SFR. If SMOD = 0, the baud rate is 1/64 of the
core clock. If SMOD = 1, the baud rate is 1/32 of the core clock:
Mode 2 Baud Rate
= (2
SMOD
/64) × (
Core Clock Frequency
)
Mode 1 and 3 Baud Rate Generation
The baud rates in Modes 1 and 3 are determined by the over-
flow rate in Timer 1 or Timer 2, or both (one for transmit and
the other for receive).
Timer 1 Generated Baud Rates
When Timer 1 is used as the baud rate generator, the baud rates
in Modes 1 and 3 are determined by the Timer 1 overflow rate
and the value of SMOD as follows:
Modes 1 and 3 Baud Rate
= (2
SMOD
/32) ×
(
Timer 1 Overflow Rate)
The Timer 1 interrupt should be disabled in this application.
The timer itself can be configured for either timer or counter
operation, and in any of its three running modes. In the most
typical application, it is configured for timer operation, in the
autoreload mode (high nibble of TMOD = 0100 binary). In that
case, the baud rate is given by the formula
Modes 1 and 3 Baud Rate
= (2
SMOD
/32) × (
Core Clock
/
(12 × [256
TH1
]))
A very low baud rate can also be achieved with Timer 1 by leav-
ing the Timer 1 interrupt enabled, and configuring the timer to
run as a 16-bit timer (high nibble of TMOD = 0100 binary), and
using the Timer 1 interrupt to do a 16-bit software reload.
Table 27 shows some commonly used baud rates and how they
might be calculated from a core clock frequency of 2.0971 MHz
and 16.78 MHz. Generally speaking, a 5% error is tolerable
using asynchronous (start/stop) communications.
Table 27. Commonly Used Baud Rates, Timer 1
Ideal
Baud
CLK
Value
Value
9600
16.78
1
–9 (F7H)
2400
16.78
1
–36 (DCH)
1200
16.78
1
–73 (B7H)
1200
2.10
1
–9 (F7H)
Core
SMOD
TH1-Reload
Actual
Baud
9709
2427
1197
1213
%
Error
1.14
1.14
0.25
1.14
相關PDF資料 |
PDF描述 |
|---|---|
| ADUC814 | MicroConverter, Small Package 12-Bit ADC with Embedded Flash MCU |
| ADUC814ARU | MicroConverter, Small Package 12-Bit ADC with Embedded Flash MCU |
| ADUC814ARU-REEL | MicroConverter, Small Package 12-Bit ADC with Embedded Flash MCU |
| ADUC824 | MicroConverter, Dual-Channel 16-/24-Bit ADCs with Embedded FLASH MCU |
| ADUC824BS | MicroConverter, Dual-Channel 16-/24-Bit ADCs with Embedded FLASH MCU |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ADUC814BRUZ | 功能描述:IC ADC 12BIT W/FLASH MCU 28TSSOP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC8xx 產品培訓模塊:MCU Product Line Introduction XMEGA Introduction AVR XMEGA USB Connectivity 標準包裝:90 系列:AVR® XMEGA 核心處理器:AVR 芯體尺寸:8/16-位 速度:32MHz 連通性:I²C，IrDA，SPI，UART/USART 外圍設備:欠壓檢測/復位，DMA，POR，PWM，WDT 輸入/輸出數:50 程序存儲器容量:192KB（96K x 16） 程序存儲器類型:閃存 EEPROM 大小:4K x 8 RAM 容量:16K x 8 電壓 - 電源 (Vcc/Vdd):1.6 V ~ 3.6 V 數據轉換器:A/D 16x12b; D/A 2x12b 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:64-TQFP 包裝:托盤 配用:ATSTK600-RC14-ND - STK600 SOCKET/ADAPTER 64TQFPATSTK600-TQFP64-ND - STK600 SOCKET/ADAPTER 64-TQFPATAVRONEKIT-ND - KIT AVR/AVR32 DEBUGGER/PROGRMMRATAVRISP2-ND - PROGRAMMER AVR IN SYSTEM |
| ADUC814BRUZ-REEL | 功能描述:IC MCU 8K FLASH ADC/DAC 28-TSSOP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC8xx 標準包裝:38 系列:Encore!® XP® 核心處理器:eZ8 芯體尺寸:8-位 速度:5MHz 連通性:IrDA，UART/USART 外圍設備:欠壓檢測/復位，LED，POR，PWM，WDT 輸入/輸出數:16 程序存儲器容量:4KB（4K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 3.6 V 數據轉換器:- 振蕩器型:內部 工作溫度:-40°C ~ 105°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:管件 其它名稱:269-4116Z8F0413SH005EG-ND |
| ADUC814BRUZ-REEL7 | 功能描述:IC MCU 8K FLASH ADC/DAC 28-TSSOP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC8xx 標準包裝:38 系列:Encore!® XP® 核心處理器:eZ8 芯體尺寸:8-位 速度:5MHz 連通性:IrDA，UART/USART 外圍設備:欠壓檢測/復位，LED，POR，PWM，WDT 輸入/輸出數:16 程序存儲器容量:4KB（4K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 3.6 V 數據轉換器:- 振蕩器型:內部 工作溫度:-40°C ~ 105°C 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 包裝:管件 其它名稱:269-4116Z8F0413SH005EG-ND |
| ADUC816 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:ADuC816: MicroConverter?= Dual 16-Bit ADC + 12-Bit DAC + Flash MCU Data Sheet (Rev. 0. 2/01 |
| ADUC816ASZ | 功能描述:8052 MicroConverter? ADuC8xx Microcontroller IC 8-Bit 12.58MHz 8KB (8K x 8) FLASH 制造商:analog devices inc. 系列:MicroConverter? ADuC8xx 包裝:- 零件狀態:上次購買時間 核心處理器:8052 核心尺寸:8-位 速度:12.58MHz 連接性:I2C，SPI，UART/USART 外設:PSM，溫度傳感器，WDT I/O 數:34 程序存儲容量:8KB（8K x 8） 程序存儲器類型:閃存 EEPROM 容量:640 x 8 RAM 容量:256 x 8 電壓 - 電源（Vcc/Vdd）:2.7 V ~ 5.5 V 數據轉換器:A/D 7x16b；D/A 1x12b 振蕩器類型:內部 工作溫度:-40°C ~ 85°C（TA） 封裝/外殼:- 供應商器件封裝:- 標準包裝:1 |
發布緊急采購，3分鐘左右您將得到回復。