M28W640HCT Datasheet, PDF (38/72 Pages) Numonyx B.V – 64 Mbit (4 Mb x 16, boot block) 3 V supply Flash memory

DC and AC parameters
M28W640HCT, M28W640HCB
Table 17. Write AC characteristics, Write Enable controlled
Symbol
Alt
Parameter
t_AVAV
t_WC Write Cycle time
Min
t_AVWH
t_AS Address Valid to Write Enable High
Min
t_DVWH
t_DS Data Valid to Write Enable High
Min
t_ELWL
t_CS Chip Enable Low to Write Enable Low
Min
t_ELQV
Chip Enable Low to Output Valid
Min
t_QVVPL(1)(2)
Output Valid to V_PP Low
Min
t_QVWPL
Output Valid to Write Protect Low
Min
t_VPHWH(1)
t_VPS V_PP High to Write Enable High
Min
t_WHAX
t_AH Write Enable High to Address Transition
Min
t_WHDX
t_DH Write Enable High to Data Transition
Min
t_WHEH
t_CH Write Enable High to Chip Enable High
Min
t_WHEL
Write Enable High to Chip Enable Low
Min
t_WHGL
Write Enable High to Output Enable Low
Min
t_WHWL
t_WPH Write Enable High to Write Enable Low
Min
t_WLWH
t_WP Write Enable Low to Write Enable High
Min
t_WPHWH
Write Protect High to Write Enable High
Min
1. Sampled only, not 100% tested.
2. Applicable if V_PP is seen as a logic input (V_PP < 3.6 V).
M28W640HCT,
M28W640HCB
70 ns Unit
70
ns
45
ns
45
ns
0
ns
70
ns
0
ns
0
ns
200
ns
0
ns
0
ns
0
ns
25
ns
20
ns
25
ns
45
ns
45
ns
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