描述 Description

The TC518512PL is a 4M bit high speed CMOS pseudo static RAM organized as 524,288 words by 8 bits. The TC518512PL utilizes

a one transistor dynamic memory cell with CMOS peripheral circuitry to provide high capacity, .b!gh speed and low power storage. The

TC518512PL operates from a single 5V power supply. Refreshing is supported by a refresh (OEIRFSH) input which enables two

types of refreshing - auto refresh and self refresh. The TC518512PL features a static RAM-like interface with a write cycle in which

the input data is written into the memory cell at the rising edge of RNV thus simplifying the microprocessor interface. The

TC518512PL-(LT) is guaranteed over an operating temperature range of -20 - 7LfC.

The TC518512PL is available in a 32-pin, 0.6 inch width plastic DIP, a small outline plastiC flat package, and a thin small outline

package (forward type, reverse type).

特性 Features

? Organization: 524,288 words x 8 bits

? Single 5V power supply

? Fast access time

TC518512PL-(LT) Family

-70 -80 -10

tCEA cr Access Time 70ns 80ns 100ns

toEA N Access Time 30ns 30ns 40ns

tRC Cycle Time 115ns 130ns 160ns

Power DisSipation 385mW 330mW 275mW

Self Refresh Current 2201lA

? Auto refresh is supported by an internal refresh address

counter

? Self refresh is supported by an internal timer

? Inputs and outputs TIL compatible

? Wide operating temperature: -20 - 70DC

? Refresh: 2048 refresh cycles/32ms

? Package

- TC518512PL: DIP32-P-600

- TC518512FL: SOP32-P-525

- TC518512FTL: TSOP32-P-400

- TC518512TRL: TSOP32-P-400A