Part Number: M27C256B
Function: 256 Kbit (32Kb x 8) UV EPROM and OTP EPROM
Package: DIP 28 Pin, PLCC32, TSOP 28 Type
Manufacturer: STMicroelectronics
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Description
The M27C256B is a 256 Kbit EPROM offered in the two ranges UV (ultra violet erase) and OTP (one time programmable). It is ideally suited for microprocessor 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 M27C256B is offered in PDIP28, PLCC32 and TSOP28 (8 x 13.4 mm) packages. The power switching characteristics of Advance CMOS EPROMs require careful decoupling of the devices.
Features
1. ACCESS TIME: 45ns
2. PROGRAMMING VOLTAGE: 12.75V ± 0.25V
3. PROGRAMMING TIME: 100μs/word
4. 5V ± 10% SUPPLY VOLTAGE in READ OPERATION
Pinouts:
Other data sheets are available within the file:
27C256B-10F1, 27C256B-10B1X, 27C256B-10B3TR, 27C256B-10B3X, 27C256B-10B6TR
M27C256B Datasheet PDF Download
