M28W640 datasheet(22/54 Pages) STMICROELECTRONICS

22 / 54 page

M28W640CT, M28W640CB

22/54

DC AND AC PARAMETERS

This section summarizes the operating and mea-

surement conditions, and the DC and AC charac-

teristics of the device. The parameters in the DC

and AC characteristics Tables that follow, are de-

rived from tests performed under the Measure-

ment

Conditions

summarized

Table

12,

Operating and AC Measurement Conditions. De-

signers should check that the operating conditions

in their circuit match the measurement conditions

when relying on the quoted parameters.

Table 12. Operating and AC Measurement Conditions

Figure 7. AC Measurement I/O Waveform

Figure 8. AC Measurement Load Circuit

Table 13. Capacitance

Note: Sampled only, not 100% tested.

M28W640CT, M28W640CB

Parameter

Units

Min

Max

Min

Max

VDD Supply Voltage

3.0

3.6

2.7

3.6

VDDQ Supply Voltage (VDDQ ≤ VDD)

2.7

3.3

2.7

3.3

Ambient Operating Temperature

– 40

°C

Load Capacitance (CL)

Input Rise and Fall Times

Input Pulse Voltages

0to VDDQ

Input and Output Timing Ref. Voltages

VDDQ/2

AI00610

VDDQ

VDDQ/2

AI00609C

VDDQ

CL includes JIG capacitance

25k

Ω

DEVICE

UNDER

TEST

0.1µF

VDD

0.1µF

VDDQ

25k

Ω

Symbol

Parameter

Test Condition

Min

Max

Unit

CIN

Input Capacitance

VIN =0V

6pF

COUT

Output Capacitance

VOUT =0V

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