M28W640FCT STMICROELECTRONICS [STMicroelectronics], M28W640FCT Datasheet - Page 29

• Manufacturer Part Number: M28W640FCT
• Description: 64 Mbit (4Mb x16, Boot Block) 3V Supply Flash Memory
• Manufacturer: STMICROELECTRONICS [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
VDHPH
PLPH
t
t
t
RP
VDD, VDDQ
PHWL
W,
PHEL
PHGL
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
M28W640FCT, M28W640FCB
Reset
M28W640FCT, M28W640FCB
tPLPH
100
70
50
30
50
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