The AT27C080 chip is a low-power, high-performance 8,388,608-bit ultraviolet eras-able programmable read only memory (EPROM) organized as 1M by 8 bits. The AT27C080 AT27C080 requires only one 5V power supply in normal read mode operation. Any byte can be accessed in less than 90 ns, eliminating the need for speed reducing WAIT states on high-performance microprocessor systems.
Atmel's scaled CMOS technology provides low active power consumption and fast programming. Power consumption is typically 10 mA in active mode and less than 10 A in standby mode.
The AT27C080 is available in a choice of packages, includ-ing; one-time programmable (OTP) plastic PLCC, PDIP,SOIC (SOP), and TSOP, as well as windowed ceramic Cerdip. All devices feature two-line control (CE, OE) to give designers the flexibility to prevent bus contention.With high density 1M byte storage capability, the AT27C080 allows firmware to be stored reliably and to be accessed by the system without the delays of mass storage media.Atmel's 27C080 has additional features to ensure high quality and efficient production use. The RapidTMProgram-ming Algorithm reduces the time required to program the part and guarantees reliable programming. Programming time is typically only 50 s/byte. The Integrated ProductI dentification Code electronically identifies the device and manufacturer. This feature is used by industry standard programming equipment to select the proper programming algorithms and voltages.
Temperature Under Bias ...................-55to +125
Storage Temperature.........................-65 to +150
Voltage on Any Pin with
Respect to Ground............................-2.0V to +7.0V(1)
Voltage on A9 with
Respect to Ground .........................-2.0V to +14.0V(1)
VPP Supply Voltage with
Respect to Ground..........................-2.0V to +14.0V(1)
Integrated UV Erase Dose................ 7258 W*sec/cm2
*NOTICE: Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating
only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this
specification is not implied. Exposure to abso-lute maximum rating conditions for extended periods may affect device reliability.
Note: 1. Minimum voltage is -0.6V DC which may undershoot to -2.0V for pulses of less than 20 ns. Maximum output pin voltage is VCC+ 0.75V DC which may overshoot to +7.0V for pulses of less than 20 ns.
Required Field 
