欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數資料
型號: ADUC841BS62-5
廠商: ANALOG DEVICES INC
元件分類: 微控制器/微處理器
英文描述: MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU
中文描述: 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP52
封裝: PLASTIC, MO-112AC1, MQFP-52
文件頁數: 35/88頁
文件大小: 903K
代理商: ADUC841BS62-5
ADuC841/ADuC842/ADuC843
Example: Programming the Flash/EE Data Memory
A user wants to program F3H into the second byte on Page 03H
of the Flash/EE data memory space while preserving the other
3 bytes already in this page. A typical program of the Flash/EE
data array involves
Rev. 0 | Page 35 of 88
1.
Setting EADRH/L with the page address.
2.
Writing the data to be programmed to the EDATA1–4.
3.
Step 1: Set Up the Page Address
Address registers EADRH and EADRL hold the high byte
address and the low byte address of the page to be addressed.
The assembly language to set up the address may appear as
MOV EADRH,#0
MOV EADRL,#03H
Step 2: Set Up the EDATA Registers
Write the four values to be written into the page into the four
SFRs, EDATA1–4. Unfortunately, the user does not know three
of them. Thus, the user must read the current page and over-
write the second byte.
MOV ECON,#1
; Read Page into EDATA1-4
MOV EDATA2,#0F3H
; Overwrite byte 2
Step 3: Program Page
A byte in the Flash/EE array can be programmed only if it has
previously been erased. To be more specific, a byte can be
programmed only if it already holds the value FFH. Because of
the Flash/EE architecture, this erase must happen at a page level;
therefore, a minimum of 4 bytes (1 page) are erased when an
erase command is initiated. Once the page is erase, the user can
program the 4 bytes in-page and then perform a verification of
the data.
MOV ECON,#5
; ERASE Page
MOV ECON,#2
MOV ECON,#4
MOV A,ECON
; Check if ECON=0 (OK!)
JNZ ERROR
Although the 4 kBytes of Flash/EE data memory are shipped
from the factory pre-erased, i.e., byte locations set to FFH, it is
nonetheless good programming practice to include an
ERASEALL routine as part of any configuration/setup code
running on the parts. An ERASEALL command consists of
writing 06H to the ECON SFR, which initiates an erase of the
4-kByte Flash/EE array. This command coded in 8051 assembly
would appear as
MOV ECON,#06H
; Erase all Command
; 2 ms Duration
Writing the ECON SFR with the appropriate command.
; Set Page Address Pointer
; WRITE Page
; VERIFY Page
Flash/EE Memory Timing
Typical program and erase times for the parts are as follows:
Normal Mode (operating on Flash/EE data memory)
READPAGE (4 bytes)
WRITEPAGE (4 bytes)
VERIFYPAGE (4 bytes)
ERASEPAGE (4 bytes)
ERASEALL (4 kBytes)
READBYTE (1 byte)
WRITEBYTE (1 byte)
22 machine cycles
380 μs
22 machine cycles
2 ms
2 ms
9 machine cycles
200 μs
ULOAD Mode (operating on Flash/EE program memory)
WRITEPAGE (256 bytes)
ERASEPAGE (64 bytes)
ERASEALL (56 kBytes)
WRITEBYTE (1 byte)
16.5 ms
2 ms
2 ms
200 μs
Note that a given mode of operation is initiated as soon as the
command word is written to the ECON SFR. The core micro-
controller operation on the parts is idled until the requested
program/read or erase mode is completed. In practice, this
means that even though the Flash/EE memory mode of operation
is typically initiated with a two machine cycle MOV instruction
(to write to the ECON SFR), the next instruction is not executed
until the Flash/EE operation is complete. This means that the
core cannot respond to interrupt requests until the Flash/EE
operation is complete, although the core peripheral functions
like counter/timers continue to count and time as configured
throughout this period.
相關PDF資料
PDF描述
ADUC842BS62-3 MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU
ADUC842BS62-5 MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU
ADUC843BS62-3 MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU
ADUC843BS62-5 MicroConverter 12-Bit ADCs and DACs with Embedded High Speed 62-kB Flash MCU
ADUC842 CON, RTANG 68 POS
相關代理商/技術參數
參數描述
ADUC841BSZ62-3 功能描述:IC ADC/DAC 12BIT W/MCU 52-MQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:MicroConverter® ADuC8xx 標準包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN,SCI,SPI 外圍設備:POR,PWM,溫度傳感器,WDT 輸入/輸出數:21 程序存儲器容量:40KB(20K x 16) 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數據轉換器:A/D 6x12b 振蕩器型:內部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
ADUC841BSZ62-5 功能描述:IC ADC/DAC 12BIT W/MCU 52-MQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:MicroConverter® ADuC8xx 標準包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN,SCI,SPI 外圍設備:POR,PWM,溫度傳感器,WDT 輸入/輸出數:21 程序存儲器容量:40KB(20K x 16) 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數據轉換器:A/D 6x12b 振蕩器型:內部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
ADUC841BSZ62-5 制造商:Analog Devices 功能描述:8-Bit Microcontroller IC
ADUC842 制造商:AD 制造商全稱:Analog Devices 功能描述:12- Bit ADCs and DACs with Embedded Hi-Speed 62KB FLASH MCU
ADUC842BCP 制造商:AD 制造商全稱:Analog Devices 功能描述:12- Bit ADCs and DACs with Embedded Hi-Speed 62KB FLASH MCU
主站蜘蛛池模板: 尚义县| 汕头市| 抚宁县| 故城县| 安陆市| 兖州市| 岑溪市| 饶河县| 教育| 梁平县| 湘乡市| 河北省| 类乌齐县| 大庆市| 乌审旗| 滦平县| 高州市| 定结县| 岳普湖县| 阿城市| 巴彦淖尔市| 德保县| 绥棱县| 徐州市| 玉山县| 宝鸡市| 汝南县| 象州县| 甘孜| 苍溪县| 翁牛特旗| 乌鲁木齐市| 天等县| 旬邑县| 樟树市| 教育| 临高县| 东源县| 大悟县| 百色市| 邯郸县|