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參數(shù)資料
| 型號(hào)： | DS87000 |
| 英文描述： | Microcontroller Programmer |
| 中文描述： | 單片機(jī)編程器 |
| 文件頁(yè)數(shù)： | 8/10頁(yè) |
| 文件大?。?/td> | 41K |
| 代理商： | DS87000 |
DS87000
8 of 10
Read Button
The Read button causes all of the EPROM in the device to be read, and the contents stored in the
programmer's buffer memory. When the read process begins, the Busy light blinks to indicate that the
programmer is performing the requested operation. When the read operation is complete and no error has
occurred, the Complete light flashes. If an error occurs during the operation, the Error light flashes.
Since the Read operation destroys the existing contents of the programmer’s buffer, the button does not
activate the function immediately. The user is required to hold the button down for two seconds before the
operation begins. This eliminates the possibility of inadvertently initiating a read.
If none of the EPROM lock bits are set, and the device's encryption vector is blank (that is, all 1’s), then the
data output from the device during a read operation is precisely the data stored in its EPROM. However if a
value other than all 1’s is stored in the device’s encryption vector, the device will perform encryption on the
data as it is read out. This encryption process is the normal security measure offered by the encryption vector.
It should be noted that if a read is performed after the encryption vector is written, the programmer’s buffer
memory will be overwritten with encrypted data. This is typically not the desired result.
Lock bits also affect the read operation. If either of the upper two levels of lock (level 3 or 4) are set, the
device will output all 1’s when it is read. Therefore, the only way to distinguish between a blank device and
one that is locked is to try to program it. If a single location is programmed, and the program operation fails,
then the device is potentially locked.
Verify Button
When the Verify button is pressed, the Busy light begins flashing and the entire contents of the device's
EPROM memory are compared with the contents of the programmer's buffer memory. If the two contain the
same data, the Complete light flashes, but if there is a difference, the Error light flashes.
Since the verify operation performs a read of the device, the same comments on the encryption vector and
lock bits made in the Read Button section above also apply to the verify operation.
Blank Button
The blank button confirms that all of the device's EPROM memory is blank (all 1’s). The Busy light blinks to
indicate that the function is being performed and no error has been detected. If an error is detected (the
EPROM is not all 1’s), the process stops immediately and the Error light begins flashing. If the device is
blank, the Complete light will flash.
Note that the comments regarding the encryption vector and lock bits made in the above sections apply to the
Blank button as well.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS87001 | Microcontroller Programming Adapters |
| DS87C520-FCL | 8-BIT MICROCONTROLLER |
| DS87C530-ECL | EPROM MICRO WITH REAL TIME CLOCK |
| DS87C530-QCL | EPROM MICRO WITH REAL TIME CLOCK |
| DS87C530 | EPROM MICRO WITH REAL TIME CLOCK |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS87000-220 | 功能描述:IC MCU PROGRAMMER 220V 40-DIP RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 過(guò)時(shí)/停產(chǎn)零件編號(hào) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 傳感器類型:CMOS 成像，彩色（RGB） 傳感范圍:WVGA 接口:I²C 靈敏度:60 fps 電源電壓:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相關(guān)產(chǎn)品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP |
| DS87001 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microcontroller Programming Adapters |
| DS87001-E44 | 功能描述:ADAPTER MCU 44-TQFP TO 40-DIP RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 適配器 系列:- 標(biāo)準(zhǔn)包裝:96 系列:- 模塊/板類型:TQFP 插座模塊 適用于相關(guān)產(chǎn)品:- |
| DS87001-E52 | 功能描述:ADAPTER MCU 52-TQFP TO 40-DIP RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 適配器 系列:- 標(biāo)準(zhǔn)包裝:96 系列:- 模塊/板類型:TQFP 插座模塊 適用于相關(guān)產(chǎn)品:- |
| DS87001-F80 | 功能描述:ADAPTER MCU 80-MQFP TO 40-DIP RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 適配器 系列:- 標(biāo)準(zhǔn)包裝:96 系列:- 模塊/板類型:TQFP 插座模塊 適用于相關(guān)產(chǎn)品:- |
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