AT28LV64B_ Ver la hoja de datos (PDF) - Atmel Corporation

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AT28LV64B_

64K (8K x 8) Low Voltage CMOS E2PROM with Page Write and Software Data Protection

Atmel Corporation 

AC Read Characteristics

Symbol

tACC

tCE (1)

tOE (2)

tDF (3, 4)

tOH

Parameter

Address to Output Delay

CE to Output Delay

OE to Output Delay

CE or OE to Output Float

Output Hold from OE, CE or Address,

whichever occurred first

AC Read Waveforms (1, 2, 3, 4)

AT28LV64B

AT28LV64B-20

Min

Max

200

200

0

80

0

55

0

AT28LV64B-25

Min

Max

250

250

0

100

0

60

0

Units

ns

ns

ns

ns

ns

Notes: 1. CE may be delayed up to tACC - tCE after the address

transition without impact on tACC.

2. OE may be delayed up to tCE - tOE after the falling

edge of CE without impact on tCE or by tACC - tOE

after an address change without impact on tACC.

3. tDF is specified from OE or CE, whichever occurs first

(CL = 5 pF).

4. This parameter is characterized and is not 100% tested.

Input Test Waveforms and

Measurement Level

Output Test Load

tR, tF < 20 ns

Pin Capacitance (f = 1 MHz, T = 25°C) (1)

Typ

Max

CIN

4

6

COUT

8

12

Note: 1. This parameter is characterized and is not 100% tested.

Units

pF

pF

Conditions

VIN = 0V

VOUT = 0V

2-139

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