M28W640 STMicroelectronics, M28W640 Datasheet - Page 22

• Manufacturer Part Number: M28W640
• Description: 64 Mbit 4Mb x16/ Boot Block 3V Supply Flash Memory
• Manufacturer: STMicroelectronics

M28W640CT, M28W640CB
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-
Table 12. Operating and AC Measurement Conditions
Figure 7. AC Measurement I/O Waveform
Table 13. Capacitance
Note: Sampled only, not 100% tested.
22/54
V
V
Ambient Operating Temperature
Load Capacitance (C
Input Rise and Fall Times
Input Pulse Voltages
Input and Output Timing Ref. Voltages
DD
DDQ
V DDQ
Symbol
C
Supply Voltage
0V
C
Supply Voltage (V
OUT
IN
Input Capacitance
Output Capacitance
Parameter
L
)
DDQ
Parameter
V
DD
)
V DDQ /2
AI00610
Test Condition
V
V
OUT
IN
– 40
Min
3.0
2.7
= 0V
= 0V
ment Conditions summarized in 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.
Figure 8. AC Measurement Load Circuit
0 to V
V
0.1µF
DDQ
80
50
V DDQ
DDQ
/2
Max
0.1µF
3.6
3.3
85
M28W640CT, M28W640CB
5
V DD
C L includes JIG capacitance
Min
– 40
Min
2.7
2.7
DEVICE
UNDER
TEST
0 to V
V
DDQ
90
50
DDQ
/2
Max
12
Max
6
V DDQ
3.6
3.3
85
5
C L
25k
Units
Unit
AI00609C
pF
pF
°C
pF
ns
V
V
V
V
25k