M2732A-2F1 Integrated Circuit Chip NMOS 32K 4K x 8 UV EPROM

NMOS 32K (4K x 8) UV EPROM

►FAST ACCESS TIME: 200ns

►EXTENDED TEMPERATURE RANGE

►SINGLE 5V SUPPLY VOLTAGE

►LOW STANDBY CURRENT: 35mA max

►INPUTS and OUTPUTS TTL

►COMPATIBLE DURING READ and PROGRAM ►COMPLETELY STATIC

DESCRIPTION

The M2732A is a 32,768 bit UV erasable and electrically programmable memory EPROM. It is organized as 4,096 words by 8 bits. The M2732A with its single 5V power supply and with an access time of 200 ns, is ideal suited for applications where fast turn around and pattern experimentation one important requirements.

The M2732A is honsed in a 24 pin Window Ceramic Frit-Seal Dual-in-Line package. The transparent lid allows the user to expose the chip to ultraviolet light to erase the bit pattern. A new pattern can be then written to the clerice by following the programming procedure.

Table 1. Signal Names

be used to gate data to the output pins, independent of device selection. Assuming that the addresses are stable, address access time (tAVAQ) is equal to the delay from E to output (tELQV). Data is available at the outputs after the falling edge of G, assuming that E has been low and the addresses have been stable for at least tAVQV-tGLQV.

Standby Mode

The M2732A has a standby mode which reduces the active power current by 70 %, from 125 mA to 35 mA. The M2732A is placed in the standby mode by applying a TTL high signal to E input. When in standby mode, the outputs are in a high impedance state, independent of the GVPP input.

The six modes of operation for the M2732A are listed in the Operating Modes Table. A single 5V power supply is required in the read mode. All inputs are TTL level except for VPP.

Two Line Output Control

Because M2732A’s are usually used in larger memory arrays, this product features a 2 line control function which accommodates the use of multiple memory connection. The two line control function allows:

a. the lowest possible memory power dissipation,

b. complete assurance that output bus contention will not occur.

Read Mode AC Waveforms

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M2732A-2F1 Integrated Circuit Chip NMOS 32K 4K x 8 UV EPROM Images