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參數(shù)資料
| 型號： | UPD178P018AGC-3B9 |
| 廠商： | NEC Corp. |
| 元件分類： | 8位微控制器 |
| 英文描述： | 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash |
| 中文描述： | 8位微控制器與2/4/8K字節(jié)在系統(tǒng)可編程閃存 |
| 文件頁數(shù)： | 23/60頁 |
| 文件大小： | 325K |
| 代理商： | UPD178P018AGC-3B9 |
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23
μ
PD178P018A
3. PROGRAM ERASURE (
μ
PD178P018AKK-T ONLY)
The
μ
PD178P018AKK-T is capable of erasing (FFH) the data written in a program memory and rewriting.
To erase the programmed data, expose the erasure window to light having a wavelength shorter than about 400
nm. Normally, irradiate ultraviolet rays of 254-nm wavelength. The amount of exposure required to completely erase
the programmed data is as follows:
UV intensity x erasure time: 30 Ws/cm
2
or more
Erasure time: 40 min. or more (When a UV lamp of 12 000
μ
W/cm
2
is used. However, a longer time may be
needed because of deterioration in performance of the UV lamp, soiled erasure window, etc.)
When erasing the contents of the data, set up the UV lamp within 2.5 cm from the erasure window. Further, if a
filter is provided for a UV lamp, irradiate the ultraviolet rays after removing the filter.
4. OPAQUE FILM ON ERASURE WINDOW (
μ
PD178P018AKK-T ONLY)
To protect from an intentional erasure by rays other than that of the lamp for erasing EPROM contents, or to protect
internal circuit other than EPROM from misoperating by rays, cover the erasure window with an opaque film when
EPROM contents erasure is not performed.
5. ONE-TIME PROM VERSION SCREENING
The one-time PROM version (
μ
PD178P018AGC-3B9) cannot be tested completely by NEC before it is shipped,
because of its structure. It is recommended to perform screening to verify PROM after writing necessary data and
performing high-temperature storage under the condition below.
Storage Temperature
Storage Time
125
°
C
24 hours
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UPD178P018AKK-T | Circular Connector; No. of Contacts:66; Series:MS27484; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:18; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:18-35 RoHS Compliant: No |
| UPD178P018A | 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash |
| UPD178P018AGC | 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash |
| UPD178P018AKK | 8-bit Microcontroller with 2/4/8K Bytes In-System Programmable Flash |
| UPD2813C | Clock And Radio Frequency Counter/Display Circuit CMOS LSI |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPD178P018AKK | 制造商:NEC 制造商全稱:NEC 功能描述:8-BIT SINGLE-CHIP MICROCONTROLLER |
| UPD178P018AKK-T | 制造商:NEC 制造商全稱:NEC 功能描述:8-BIT SINGLE-CHIP MICROCONTROLLER |
| UPD178P018GC | 制造商:NEC 制造商全稱:NEC 功能描述:8-BIT SINGLE-CHIP MICROCONTROLLER |
| UPD178P018GC-3B9 | 制造商:NEC 制造商全稱:NEC 功能描述:8-BIT SINGLE-CHIP MICROCONTROLLER |
| UPD178P018KK | 制造商:NEC 制造商全稱:NEC 功能描述:8-BIT SINGLE-CHIP MICROCONTROLLER |
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