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參數(shù)資料
| 型號： | M87C257-70C3TR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | PROM |
| 英文描述： | 32K X 8 OTPROM, 70 ns, PQCC32 |
| 封裝： | LEAD FREE, PLASTIC, LCC-32 |
| 文件頁數(shù)： | 18/22頁 |
| 文件大?。?/td> | 196K |
| 代理商： | M87C257-70C3TR |
Obsolete
Product(s)
- Obsolete
Product(s)
M87C257
Description
1
Description
The M87C257 is a 256 Kbit EPROM offered in the two ranges UV (ultra violet erase) and
OTP (one time programmable). It incorporates latches for all address inputs to minimize chip
count, reduce cost, and simplify the design of multiplexed bus systems and is organized as
32,768 by 8 bits.
The FDIP28W (window ceramic frit-seal package) has a transparent lid which allows the
user to expose the chip to ultraviolet light to erase the bit pattern. A new pattern can then be
written to the device by following the programming procedure.
For applications where the content is programmed only one time and erasure is not
required, the M87C257 is offered in PLCC32 package.
In order to meet environmental requirements, ST offers the M87C257 in ECOPACK
packages.
ECOPACK packages are Lead-free. The category of second Level Interconnect is marked
on the package and on the inner box label, in compliance with JEDEC Standard JESD97.
The maximum ratings related to soldering conditions are also marked on the inner box label.
ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com.
Figure 1.
Logic diagram
AI00928B
15
A0-A14
ASVPP
Q0-Q7
VCC
M87C257
G
E
VSS
8
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M87C257-70C3X | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:ADDRESS LATCHED 256K 32K x 8 UV EPROM and OTP EPROM |
| M87C257-70C6TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:ADDRESS LATCHED 256K 32K x 8 UV EPROM and OTP EPROM |
| M87C257-70C6X | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:ADDRESS LATCHED 256K 32K x 8 UV EPROM and OTP EPROM |
| M87C257-70C7TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:ADDRESS LATCHED 256K 32K x 8 UV EPROM and OTP EPROM |
| M87C257-70C7X | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:ADDRESS LATCHED 256K 32K x 8 UV EPROM and OTP EPROM |
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