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參數(shù)資料
| 型號： | T83C5101ZZZ-3ZSIL |
| 廠商： | ATMEL CORP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 40 MHz, MICROCONTROLLER, PDIP24 |
| 封裝： | DIP-24 |
| 文件頁數(shù)： | 36/52頁 |
| 文件大小： | 701K |
| 代理商： | T83C5101ZZZ-3ZSIL |
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Rev. F - 12 March, 2001
41
T87C5101
T83C5101/02
-to 0V when P3 contains the test code
-to 5V when P3 contains high order or low order addresses
-to Vpp during programming cycled
Test pin is driven :
-to 5V when P3 contains high order address
-to 0V in the other cases
9.4. EPROM Erasure (Windowed Packages Only)
Erasing the EPROM erases the code array, the encryption array and the lock bits returning the parts to full
functionality.
Erasure leaves all the EPROM cells in a 1’s state (FF).
9.4.1. Erasure Characteristics
The recommended erasure procedure is exposure to ultraviolet light (at 2537 ) to an integrated dose at least 15
W-sec/cm2. Exposing the EPROM to an ultraviolet lamp of 12,000
W/cm2 rating for 30 minutes, at a distance
of about 25 mm, should be sufficient. An exposure of 1 hour is recommended with most of standard erasers.
Erasure of the EPROM begins to occur when the chip is exposed to light with wavelength shorter than approximately
4,000 . Since sunlight and fluorescent lighting have wavelengths in this range, exposure to these light sources
over an extended time (about 1 week in sunlight, or 3 years in room-level fluorescent lighting) could cause
inadvertent erasure. If an application subjects the device to this type of exposure, it is suggested that an opaque
label be placed over the window.
9.5. Signature Bytes
9.5.1. Signature bytes content
The T8xC5101/02 has four signature bytes in location 30h, 31h, 60h and 61h. To read these bytes follow the
procedure for EPROM verify but activate the control lines provided in Table 17. for Read Signature Bytes. Table
19. shows the content of the signature byte for the T8xC5101/02.
Table 19. Signature Bytes Content
Location
Contents
Comment
30h
58h
Manufacturer Code: Atmel Wireless & Microcontrollers
31h
57h
Family Code: C51 X2
60h
3Bh
Product name: T83C5101/02 8K or 16K ROM version
60h
BBh
Product name: T87C5101 16K OTP version
61h
EFh
Product revision number : T8xC5101/02 Rev.0
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