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ST62T53B/T60B/T63B ST62E60B
PROGRAMMING MODES
(Cont’d)
1.4.4 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 sun-
lights and some types of fluorescent lamps have
wavelengths 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/cm
2
. The erasure time with this dosage is ap-
proximately 15 to 20 minutes using an ultraviolet
lamp
with
12000
μ
W/cm
2
ST62E60B should be placed within 2.5cm (1Inch)
of the lamp tubes during erasure.
power
rating.
The
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相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ST6253CM6 | Replaced by PT78HT265 : 6.5Vout 2A Wide Input Positive Step-Down ISR 3-SIP MODULE -40 to 85 |
| ST6263BM3 | 8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, AUTO-RELOAD TIMER, EEPROM AND SPI |
| ST6263BM6 | 8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, AUTO-RELOAD TIMER, EEPROM AND SPI |
| ST6253BB1 | Replaced by PT78HT233 : 3.3Vout 2A Wide Input Positive Step-Down ISR 3-SIP MODULE -40 to 85 |
| ST6253BB3 | 8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, AUTO-RELOAD TIMER, EEPROM AND SPI |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST6253CM3/XXX | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, SAFE RESET, AUTO-RELOAD TIMER, EEPROM AND SPI |
| ST6253CM6 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, SAFE RESET, AUTO-RELOAD TIMER, EEPROM AND SPI |
| ST6253CM6/XXX | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, SAFE RESET, AUTO-RELOAD TIMER, EEPROM AND SPI |
| ST6255BB1 | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, AUTO-RELOAD TIMER, EEPROM AND SPI |
| ST6255BB1/XXX | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:8-Bit Microcontroller |
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