S71PL254 datasheet(158/196 Pages) SPANSION

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SRAM

SRAM_Type01_02A0 June 15, 2004

Advance

I n f o rmation

AC Operating Conditions

Test Conditions

Test Load and Test Input/Output Reference

Input pulse level: 0.4 to 2.2V

Input rising and falling time: 5ns

Input and output reference voltage: 1.5V

Output load (See Figure 79): CL= 30pF+1TTL

Notes:

1. Including scope and jig capacitance.

2. R1=3070Ω, R2=3150Ω.

3. VTM =2.8V.

AC Characteristics

Read/Write Characteristics (VCC=2.7-3.3V)

Figure 79. AC Output Load

Parameter List

Symbol

Speed Bins

Units

70ns

Min

Max

Read cycle time

tRC

Address access time

tAA

Chip select to output

tCO1, tCO2

Output enable to valid output

tOE

LB#, UB# Access Time

tBA

Chip select to low-Z output

tLZ1, tLZ2

LB#, UB# enable to low-Z output

tBLZ

Output enable to low-Z output

tOLZ

Chip disable to high-Z output

tHZ1, tHZ2

UB#, LB# disable to high-Z output

tBHZ

Output disable to high-Z output

tOHZ

Output hold from address change

tOH

VTM (note 3)

R1 (note 2)

CL (note 1)

R2 (note 2)

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