P30-65nm
Table 26: AC Write Specifications (Sheet 2 of 2)
Num
Symbol
Parameter
Min
Max
Unit
Notes
Write to Synchronous Read Specifications
W19
W20
W28
t
t
t
WE# high to Clock valid
19
19
7
-
-
-
ns
ns
ns
1,2,3,6,10
WHCH/L
WHVH
WHVL
WE# high to ADV# high
WE# high to ADV# low
1,2,3,6,10,12
Write Specifications with Clock Active
W21
W22
t
t
ADV# high to WE# low
Clock high to WE# low
-
-
20
20
ns
ns
1,2,3,11,12
1,2,3,11
VHWL
CHWL
Notes:
1.
2.
3.
4.
Write timing characteristics during erase suspend are the same as write-only operations.
A write operation can be terminated with either CE# or WE#.
Sampled, not 100% tested.
Write pulse width low (t
or t
) is defined from CE# or WE# low (whichever occurs last) to CE# or WE# high
WLWH
ELEH
WLWH
(whichever occurs first). Hence, t
= t
= t
= t
.
ELWH
ELEH
WLEH
5.
Write pulse width high (t
or t
) is defined from CE# or WE# high (whichever occurs first) to CE# or WE# low
WHWL
EHEL
(whichever occurs last). Hence, t
= t
= t
= t
).
EHWL
WHWL
EHEL
WHEL
6.
7.
8.
t
or t
must be met when transiting from a write cycle to a synchronous burst read.
WHVH
WHCH/L
VPP and WP# should be at a valid level until erase or program success is determined.
This specification is only applicable when transiting from a write cycle to an asynchronous read. See spec W19 and W20
for synchronous read.
9.
10.
When doing a Read Status operation following any command that alters the Status Register, W14 is 20ns.
Add 10ns if the write operations results in a RCR or block lock status change, for the subsequent read operation to
reflect this change.
11.
These specs are required only when the device is in a synchronous mode and clock is active during address setup
phase.
12.
13.
These specs are required only when ADV# is used to latch address.
This specification must be complied with by customer’s writing timing. The result would be unpredictable if any violation
to this timing specification.
Figure 24: Write-to-Write Timing
W5
W8
W5
W8
Address[A]
W2
W6
W2
W6
CE# [E]
W3
W9
W3
WE# [W]
OE# [G]
W4
W7
W4
W7
Data [D/Q]
W1
RST# [P]
Datasheet
56
Sept 2012
Order Number: 208042-06
MICRON [ MICRON TECHNOLOGY ]
