参数资料
型号: ST62T65CM6
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDSO28
封装: 0.300 INCH, ROHS COMPLIANT, PLASTIC, SOP-28
文件页数: 5/84页
文件大小: 1343K
代理商: ST62T65CM6
13/84
ST6255C ST6265C ST6265B
PROGRAMMING MODES (Cont’d)
1.4.2 EPROM Erasing
The EPROM of the windowed package of the
MCUs may be erased by exposure to Ultra Violet
light. The erasure characteristic of the MCUs is
such that erasure begins when the memory is ex-
posed to light with a wave lengths shorter than ap-
proximately 4000. It should be noted that sunlight
and some types of fluorescent lamps have wave-
lengths in the range 3000-4000.
It is thus recommended that the window of the
MCUs packages be covered by an opaque label to
prevent unintentional erasure problems when test-
ing the application in such an environment.
The recommended erasure procedure of the
MCUs EPROM is the exposure to short wave ul-
traviolet light which have a wave-length 2537A.
The integrated dose (i.e. U.V. intensity x exposure
time) for erasure should be a minimum of 15W-
sec/cm2. The erasure time with this dosage is ap-
proximately 15 to 20 minutes using an ultraviolet
lamp with 12000W/cm2 power rating. The
ST62E65C should be placed within 2.5cm (1Inch)
of the lamp tubes during erasure.
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相关代理商/技术参数
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