AT25DF021 datasheet(32/41 Pages) ATMEL

32 / 41 page

3677D–DFLASH–04/09

AT25DF021

VIH

Input High Voltage

0.7 x VCC

VOL

Output Low Voltage

IOL = 1.6 mA; VCC = Min

0.4

VOH

Output High Voltage

IOH = -100 µA; VCC = Min

VCC - 0.2V

14.4 AC Characteristics - Maximum Clock Frequencies

Symbol

Parameter

AT25DF021

(2.3V Version)

AT25DF021

(2.7V Version)

Units

MinMax

fCLK

Maximum Clock Frequency for All Operations

(excluding 03h opcode)

MHz

fRDLF

Maximum Clock Frequency for 03h Opcode

(Read Array – Low Frequency)

MHz

14.5 AC Characteristics – All Other Parameters

Symbol

Parameter

AT25DF021

(2.3V Version)

AT25DF021

(2.7V Version)

Units

Min

Max

Min

Max

tCLKH

Clock High Time

8.0

6.4

tCLKL

Clock Low Time

8.0

6.4

tCLKR(1)

Clock Rise Time, Peak-to-Peak (Slew Rate)

0.1

V/ns

tCLKF

(1)

Clock Fall Time, Peak-to-Peak (Slew Rate)

0.1

V/ns

tCSH

Chip Select High Time

tCSLS

Chip Select Low Setup Time (relative to Clock)

tCSLH

Chip Select Low Hold Time (relative to Clock)

tCSHS

Chip Select High Setup Time (relative to Clock)

tCSHH

Chip Select High Hold Time (relative to Clock)

tDS

Data In Setup Time

tDH

Data In Hold Time

tDIS(1)

Output Disable Time

(2)

Output Valid Time

tOH

Output Hold Time

tHLS

HOLD Low Setup Time (relative to Clock)

tHLH

HOLD Low Hold Time (relative to Clock)

tHHS

HOLD High Setup Time (relative to Clock)

tHHH

HOLD High Hold Time (relative to Clock)

tHLQZ

(1)

HOLD Low to Output High-Z

tHHQX(1)

HOLD High to Output Low-Z

14.3 DC Characteristics (Continued)

Symbol

Parameter

Condition

Min

Typ

Max

Units

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