- 您現在的位置：買賣IC網 > PDF目錄374040 > ADUC848BS32-3 (ANALOG DEVICES INC) MicroConverter Multichannel 24-/16-Bit ADCs with Embedded 62 kB Flash and Single-Cycle MCU PDF資料下載
參數資料
| 型號： | ADUC848BS32-3 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | MicroConverter Multichannel 24-/16-Bit ADCs with Embedded 62 kB Flash and Single-Cycle MCU |
| 中文描述： | 8-BIT, FLASH, 12.58 MHz, MICROCONTROLLER, PQFP52 |
| 封裝： | 14 X 14 MM, PLASTIC, MO-112-AC-1, MQFP-52 |
| 文件頁數： | 52/108頁 |
| 文件大小： | 1109K |
| 代理商： | ADUC848BS32-3 |
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頁當前第52頁第53頁第54頁第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頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁
ADuC845/ADuC847/ADuC848
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. A | Page 52 of 108
1.
Setting EADRH/L with the page address.
2.
Writing the data to be programmed to the EDATA1–4.
3.
Writing the ECON SFR with the appropriate command.
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 ;Set Page Address Pointer
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 overwrite
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. Specifically, a byte can be programmed
only if it already holds the value FFH. Because of the Flash/EE
architecture, this erasure 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 erased, the user can
program the 4 bytes in-page and then perform a verification of
the data.
MOV ECON, #5
MOV ECON, #2
MOV ECON, #4
MOV A, ECON
;ERASE Page
;WRITE Page
;VERIFY Page
;Check if ECON = 0 (OK!)
Although the 4 kbytes of Flash/EE data memory are factory pre-
erased, that is, byte locations set to FFH, it is good programming
practice to include an ERASEALL routine as part of any
configuration/set-up 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 language would appear as
MOV ECON, #06H
;ERASE all Command
;2ms duration
FLASH/EE MEMORY TIMING
Typical program and erase times for the parts are as follows:
Normal Mode (Operating on Flash/EE Data Memory)
Command
Bytes Affected
READPAGE
4 bytes
WRITEPAGE
4 bytes
VERIFYPAGE
4 bytes
ERASEPAGE
4 bytes
ERASEALL
4 kbytes
READBYTE
1 byte
WRITEBYTE
1 byte
ULOAD Mode (Operating on Flash/EE Program Memory)
WRITEPAGE
256 bytes
ERASEPAGE
64 bytes
ERASEALL
56 kbytes
WRITEBYTE
1 byte
25 machine cycles
380 μs
25 machine cycles
2 ms
2 ms
10 machine cycles
200 μs
15 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 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 such as counter/
timers continue to count as configured throughout this period.
相關PDF資料 |
PDF描述 |
|---|---|
| ADUC848BS32-5 | MicroConverter Multichannel 24-/16-Bit ADCs with Embedded 62 kB Flash and Single-Cycle MCU |
| ADUC848BS62-3 | 10-825944-010 |
| ADUC848BS62-5 | MicroConverter Multichannel 24-/16-Bit ADCs with Embedded 62 kB Flash and Single-Cycle MCU |
| ADUC848BS8-3 | MicroConverter Multichannel 24-/16-Bit ADCs with Embedded 62 kB Flash and Single-Cycle MCU |
| ADUC848BS8-5 | MicroConverter Multichannel 24-/16-Bit ADCs with Embedded 62 kB Flash and Single-Cycle MCU |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ADUC848BS32-5 | 制造商:Analog Devices 功能描述:IC MICROCONTROLLER |
| ADUC848BS62-3 | 制造商:Rochester Electronics LLC 功能描述:8BIT CISC 62KB FLASH 12.85MHZ 3.3V 52MQFP - Bulk 制造商:Analog Devices 功能描述: |
| ADUC848BS62-5 | 制造商:Rochester Electronics LLC 功能描述:8BIT CISC 62KB FLASH 12.85MHZ 5V 52MQFP - Bulk 制造商:Analog Devices 功能描述:IC MICROCONTROLLER |
| ADUC848BS8-3 | 制造商:Analog Devices 功能描述: |
| ADUC848BS8-5 | 制造商:Analog Devices 功能描述:MCU 8-bit ADuC8xx 8052 CISC 62KB Flash 3.3V/5V 52-Pin MQFP 制造商:Analog Devices 功能描述:IC MICROCONTROLLER |
發布緊急采購，3分鐘左右您將得到回復。