IBM014400中文资料IBM数据手册PDF规格书

特性 Features

1,048,576 word by 4 bit organization

Power Supply: 3.3 ±0.3V or 5.0 ±0.5V

Standard Power (SP) and Low Power (LP)

1024 Refresh Cycles

16 ms Refresh Rate (SP version)

128 ms Refresh Rate (LP version)

Power Dissipation

Active (max)

85 mA/70 mA (5.0V)

- 95 mA/80 mA (3.3V)

Standby Current: TTL Inputs (max)

2.0 mA (SP version)

1.0 mA (LP version)

Standby Current: CMOS Inputs (max)

- 1.0 mA (SP version)

- 0.15 mA (LP version)

Fast Page Mode

RAS Only, and CAS before RAS Refresh

Hidden Refresh

Self-Refresh (LP version only)

Packages: SOJ-26/20 (300mil)

TSOP-26/20 (300mil)

描述 Description

The IBM014400 is a fast-page dynamic RAM organized 1,048,576 words by 4 bits. The devices are

fabricated in IBM's 4M-bit Shrink 2 CMOS silicon

gate technology. The circuits and process have

been designed to provide high performance, low

power dissipation, and high reliability. The devices

operate with either a 5.0V ± 0.5V or 3.3V ± 0.3V

power supply and are offered in a plastic 26/20 pin

SOJ (300mil) or TSOP (300mil) package. Refreshing may be accomplished by means of a CAS before

RAS refresh cycle (CBR) that internally generates

the refresh address. RAS - only refresh cycles can

also refresh all memory locations. Self-Refresh

mode is entered by holding RAS low for ≥ 100µS during a CBR cycle. Detection of this long RAS time

during a CBR cycle starts an internal oscillator that

maintains data integrity without external clocking. Self-Refresh mode is included as a standard feature

for Low Power devices (IBM014400M and

IBM014400P). Self Refresh operating current is

≤ 170μA (max) and typically ≤ 100μA. Alllow power

devices support Extended Data Retention of 128ms,

eight times (8x) the retention supported by IBM's

standard power devices.