930105201 datasheet(6/13 Pages) ATMEL

Nome de Peças	930105201

Descrição Electrónicos	Rad Hard 512K x 8 5V Tolerant Very Low Power CMOS SRAM

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AT60142FT

7726B–AERO–04/09

Data Retention Mode

Atmel CMOS RAM's are designed with battery backup in mind. Data retention voltage

and supply current are guaranteed over temperature. The following rules insure data

retention:

1. During data retention chip select CS must be held high within V

CC to VCC -0.2V.

2. Output Enable (OE) should be held high to keep the RAM outputs high imped-

ance, minimizing power dissipation.

3. During power-up and power-down transitions CS and OE must be kept between

VCC + 0.3V and 70% of VCC.

4. The RAM can begin operation > tR ns after VCC reaches the minimum operation

voltages (3V).

Figure 1. Data Retention Timing

Data Retention Characteristics

Parameter

Description

Min

Typ TA = 25°CMax

Unit

VCCDR

VCC for data retention

2.0

–

V

tCDR

Chip deselect to data

retention time

0.0

–

ns

tR

Operation recovery

time

tAVAV

(1)

1.

TAVAV = Read cycle time.

––

ns

ICCDR (2)

2.

CS = VCC, VIN = GND/VCC.

Data retention current

–

0.700

1.5 (AT60142FT-15)

mA

1.3 (AT60142FT-17)

Nº de peça semelhante - 930105201

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
ATMEL Corporation	930105201	291Kb / 13P	Rad Hard 512K x 8 5V Tolerant Very Low Power CMOS SRAM

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Descrição semelhante - 930105201

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
ATMEL Corporation	AT60142HT	319Kb / 12P	Rad Hard 512K x 8 5V Tolerant Very Low Power CMOS SRAM
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