|Description||Ic-4mb CMOS EPROM|
|Datasheet||Download AM27C040-120DC datasheet
s Fast access time ns s Low power consumption 100 µA maximum CMOS standby current JEDEC-approved pinout Plug in upgrade of 1 Mbit EPROM and 2 Mbit EPROMs Easy upgrade from 28-pin JEDEC EPROMs s Single +5 V power supply s ±10% power supply tolerance standard on most speeds s 100% FlashriteTM programming Typical programming time of 1 minute s Latch-up protected 100 mA from V to VCC High noise immunity s Compact 32-pin DIP, PDIP, PLCC, TSOP packages
The a 4 Mbit ultraviolet erasable programmable read-only memory. It is organized as 512K words by 8 bits per word, operates from a single +5 V supply, has a static standby mode, and features fast single address location programming. Products are available in windowed ceramic DIP packages, as well as plastic one-time programmable (OTP) packages. Typically, any byte can be accessed in less than 90 ns, allowing operation with high-performance microprocessors without any WAIT states. The Am27C040 offers separate Output Enable (OE) and Chip Enable (CE) controls, thus eliminating bus contention in a multiple bus microprocessor system. AMD's CMOS process technology provides high speed, low power, and high noise immunity. Typical power consumption is only mW in active mode, and µW in standby mode. All signals are TTL levels, including programming signals. Bit locations may be programmed singly, in blocks, or at random. The Am27C040 supports AMD's Flashrite programming algorithm (100 µs pulses) resulting in typical programming time of 1 minute.
VCC VSS VPP OE CE/PGM Output Enable Chip Enable and Prog Logic Y Decoder A0A18 Address Inputs X Decoder Data Outputs DQ0DQ7
Notes: 1. JEDEC nomenclature is in parenthesis. 2. The 32-pin DIP to 32-pin PLCC configuration varies from the JEDEC 28-pin DIP to 32-pin PLCC configuration.
A0A18 CE(E)/PGM (P) DQ0DQ7 OE (G) VCC VPP VSS Address Inputs Chip Enable Input Data Inputs/Outputs Output Enable Input VCC Supply Voltage Program Voltage Input Ground
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