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, high speed and low power storage. The

TC518512PL operates from a single 5V power supply. Refreshing is supported by a refresh (OE/RFSH) 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 R/W thus simplifying the microprocessor interface.

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

ICEA CE Access Time

toEA

OE Access Time

tac Cycle Time

Power Dissipation

Self Refresh Current

TC518512PL Family

-80

80ns

30ns

130ns

-70

70ns

30ns

115ns

385mW

330mW

200μA

? Self refresh is supported by an internal timer

? Inputs and outputs TTL compatible

? Refresh: 2048 refresh cycles/32ms

? Package

- TC518512PL: DIP32-P-600

- TC518512FL: SOP32-P-525

- TC518512FTL: TSOP32-P-400

TC518512TRL: TSOP32-P-400A

-10

100ns

40ns

? Auto refresh is supported by an internal refresh address

counter

160ns

275mW