Am27C64

Pinout




Specifications

Storage Temperature
OTP Products. . . . . . . . . . . . . . . . . . 65°C to +125°C
All Other Products . . . . . . . . . . . . . . 65°C to +150°C
Ambient Temperature
with Power Applied. . . . . . . . . . . . . . 55°C to +125°C
Voltage with Respect to V_SS
All pins except A9, V_PP , V_CC. . . . . 0.6 V to V_CC  + 0.6 V
A9 and V_PP(Note 2). . . . . . . . . . . . . . . . .0.6 V to 13.5 V
V_CC (Note 1).. .  . . . . . . . . . . . . . . . . . . . .0.6 V to 7.0 V
 


Description

The Am27C64 is a 64-Kbit, ultraviolet erasable pro- grammable read-only memory. It is organized as 8K 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) PDIP and PLCC packages.

Data can be typically accessed in less than 45 ns, al- lowing high-performance microprocessors to operate without any WAIT states. Am27C64 offers separate Output Enable (OE#) and Chip Enable (CE#) controls,thus eliminating bus contention in a multiple bus micro- processor system.

AMD's CMOS process technology provides high speed, low power, and high noise immunity. Typical power consumption is only 80 mW in active mode, and 100 W in standby mode.

All signals are TTL levels, including programming sig- nals. Bit locations may be programmed singly, in blocks, or at random. Am27C64 supports AMD's Flashrite programming algorithm (100 s pulses), re- sulting in a typical programming time of 1 second.