ACE24C256DM+TH datasheet(6/18 Pages) ACE

6 / 18 page

ACE24C128/256

Two-wire Serial EEPROM

VER 1.5

AC Characteristics

Applicable over recommended operating range from: TA = -40℃ to +85℃, VCC = +1.7V to +5.5V, CL = 100 pF (unless otherwise

noted). Test conditions are listed in Note2.

Symbol

Parameter

1.7-volt

2.5-volt

5.5-volt

Units

Min Max Min Max Min Max

fSCL

Clock Frequency, SCL

400

1000

kHz

TLOW

Clock Pulse Width Low

1.3

0.40

0.4

µs

THIGH

Clock Pulse Width High

0.6

0.40

0.4

µs

Noise Suppression Time

100

TAA

Clock Low to Data Out Valid (ACE24C128)

0.02 0.9 0.02 0.55 0.02 0.55

µs

TAA

Clock Low to Data Out Valid (ACE24C256)

0.05 0.9 0.05 0.55 0.05 0.55

µs

TBUF

Time the bus must be free before a new

transmission can Start

1.3

0.5

µs

THD.STA

Start Hold Time

0.6

0.25

µs

TSU.STA

Start Setup Time

0.6

0.25

µs

THD.DAT

Data In Hold Time

µs

TSU.DAT

Data In Setup Time

100

Inputs Rise Time

0.3

µs

Inputs Fall Time

300

100

TSU.STO

Stop Setup Time

0.6

0.25

µs

TDH

Data Out Hold Time

TWR

Write Cycle Time

Endurance

3.3V, 25℃, Page Mode

1,000,000

Write

Cycles

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

2.AC measurement conditions:

RL (connects to Vcc): 1.3kΩ

Input pulse voltages: 0.3 Vcc to 0.7 Vcc

Input rise and fall times: ≦50 ns

Input and output timing reference voltages: 0.5Vcc

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