(China (Mainland))
Product Summary
The 27C256A-20 is a 5V only, 256K-bit, One-Time Programmable Read Only Memory. It is organized as 32K by 8 bits, operates from a single + 5volt supply, has a static standby mode, and features fast single address location programming. For programming from outside the system, existing EPROM programmers may be used. The 27C256A-20 supports intelligent fast programming algorithm which can result in programming time of less than ten seconds.
Parametrics
27C256A-20 absolute maximum ratings: (1)Ambient Operating Temperature: -40℃ to 85℃; (2)Storage Temperature: -65℃ to 125℃; (3)Applied Input Voltage: -0.5V to 7.0V; (4)Applied Output Voltage: -0.5V to VCC + 0.5V; (5)VCC to Ground Potential: -0.5V to 7.0V; (6)A9 & Vpp: -0.5V to 13.5V.
Features
27C256A-20 features: (1)32K x 8 organization; (2)Single +5V power supply; (3)+12.5V programming voltage; (4)Fast access time: 45/55/70/90/100/120/150 ns; (5)Totally static operation; (6)Completely TTL compatible; (7)Operating current: 30mA; (8)Standby current: 100uA; (9)Package type: 28 pin plastic DIP, 32 pin PLCC, 28 pin 8 x 13.4mm TSOP(I).
Diagrams
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