M28W640EC-ZBF STMicroelectronics, M28W640EC-ZBF Datasheet - Page 29

• Manufacturer Part Number: M28W640EC-ZBF
• Description: 64 Mbit 4Mb x16/ Boot Block 3V Supply Flash Memory
• Manufacturer: STMicroelectronics

Figure 12. Power-Up and Reset AC Waveforms
Table 19. Power-Up and Reset AC Characteristics
Note: 1. The device Reset is possible but not guaranteed if t
t
t
Symbol
PLPH
VDHPH
t
t
t
PHWL
PHEL
PHGL
W,
RP
VDD, VDDQ
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
Parameter
tVDHPH
Power-Up
tPHWL
tPHGL
tPHEL
PLPH
During Program
and Erase
< 100ns.
Test Condition
others
Min
Min
Min
Min
M28W640ECT, M28W640ECB
Reset
tPLPH
100
70
50
30
50
M28W640EC
tPHWL
tPHEL
tPHGL
100
85
50
30
50
100
90
50
30
50
AI03537b
100
10
50
30
50
Unit
29/55
µs
ns
ns
µs