M27C256B-70XC1TR

The M27C256B-70XC1TR is designed as a 256Kbit EPROM which 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.

It has six features. (1)5V+/-10% supply voltage in read operation. (2)Fast access time 45ns. (3)Low power consumption which means active current 30mA at 5MHz and standby current 100uA. (4)Its programming voltage 12.75V +/-0.25V. (5)Programming time 100us/byte (PRESTO II algothm). (6)Electronic signature which means manufacturer code 20h and device code 8Dh. Those are all the main features.

Some absolute maximum ratings have been concluded into several points as follow. (1)Its ambient operating temperature range would be from 0°C to 70°C. (2)Its temperature under bias would be from -50°C to 125°C. (3)Its storage temperature range would be from -65°C to 150°C. (4)Its input or output voltage (except A9) would be from -2V to 7V. (5)Its supply voltage would be from -2V to 7V. (6)Its A9 voltage would be from -2V to 13.5V. (7)Its program supply voltage would be from -2V to 14V. It should be noted that stresses above those listed in absolute maximum ratings may cause permanent damage to device.

Also some read mode electrical characteristics are concluded as follow. (1)Its input leakage current would be max +/-10uA. (2)Its output leakage current would be +/-10uA. (3)Its supply current would be max 30mA. (4)Its supply current standby TTL would be max 1mA. (5)Its supply current standby CMOS would be max 100uA. (6)Its program current would be max 100uA. (7)Its input low voltage would be min -0.3V and max 0.8V. (8)Its input high voltage would be min 2V and max Vcc+1V. (9)Its output low voltage would be max 0.4V. (10)Its output high voltage would be min 3.6V for TTL and would be min Vcc-0.7V for CMOS. And so on. If you have any question or suggestion or want to know more information please contact us for details. Thank you!