M28W640 STMicroelectronics, M28W640 Datasheet - Page 29

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

Figure 12. Power-Up and Reset AC Waveforms
Table 18. Power-Up and Reset AC Characteristics
Note: 1. The device Reset is possible but not guaranteed if t
t
t
Symbol
VDHPH
PLPH
t
t
t
PHWL
PHEL
PHGL
RP
VDD, VDDQ
W,
2. Sampled only, not 100% tested.
3. It is important to assert RP in order to allow proper CPU initialization during power up or reset.
(1,2)
E, G
(3)
Reset High to Write Enable Low, Chip
Enable Low, Output Enable Low
Reset Low to Reset High
Supply Voltages High to Reset High
tVDHPH
Parameter
Power-Up
tPHWL
tPHGL
tPHEL
PLPH
< 100ns.
During Program
and Erase
others
Test Condition
Min
Min
Min
Min
Reset
tPLPH
M28W640CT, M28W640CB
tPHWL
tPHGL
tPHEL
100
80
50
30
50
M28W640C
100
90
50
30
50
AI03537b
Unit
µs
ns
ns
µs
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