參數(shù)資料
型號： U631H16BSC25
廠商： Electronic Theatre Controls, Inc.
英文描述： SOFTSTORE 2K X 8 NVSRAM
中文描述： SOFTSTORE 2K × 8非易失性SRAM
文件頁數(shù)： 8/12頁
文件大?。?/td> 275K
代理商： U631H16BSC25
8
December 12, 1997
U631H16
n:
o:
p:
q: An automatic RECALL also takes place at power up, starting when V
exceeds V
SWITCH
and takes t
RESTORE
. V
CC
must not drop below
V
SWITCH
once it has been exceeded for the RECALL to function properly.
r:
Noise on the E pin may trigger multiple READ cycles from the same address and abort the address sequence.
s: If the Chip Enable Pulse Width is less than t
(see Read Cycle) but greater than or equal t
w(E)SR
, than the data may not be valid at
the end of the low pulse, however the STORE or RECALL will still be initiated.
The software sequence is clocked with E controlled READs.
Once the software controlled STORE or RECALL cycle is initiated, it completes automatically, ignoring all inputs.
Note that STORE cycles (but not RECALL) are aborted by V
CC
< V
SWITCH
(STORE inhibit).
No. Software Controlled STORE/RECALL
Cycle
l, n
Symbol
25
35
45
Unit
Alt.
IEC
Min.
Max.
Min.
Max.
Min.
Max.
25 STORE/RECALL Initiation Time
t
AVAV
t
cR
25
35
45
ns
26 Chip Enable to Output Inactive
o
t
ELQZ
t
dis(E)SR
600
600
600
ns
27 STORE Cycle Time
p
t
ELQXS
t
d(E)S
10
10
10
ms
28 RECALL Cycle Time
q
t
ELQXR
t
d(E)R
20
20
20
μ
s
29 Address Setup to Chip Enable
r
t
AVELN
t
su(A)SR
0
0
0
ns
30 Chip Enable Pulse Width
r, s
t
ELEHN
t
w(E)SR
20
25
35
ns
31 Chip Disable to Address Change
r
t
EHAXN
t
h(A)SR
0
0
0
ns
t:
W must be HIGH when E is LOW during the address sequence in order to initiate a nonvolatile cycle. G may be either HIGH or LOW
throughout. Addresses 1 through 6 are found in the mode selection table. Address 6 determines whether the U631H16 performs a STORE
or RECALL.
E must be used to clock in the address sequence for the Software controlled STORE and RECALL cycles.
u:
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAA
AAA
AAA
AAA
Ai
E
DQi
Output
t
cR
ADDRESS 1
VALID
VALID
SOFTWARE CONTROLLED STORE/RECALL CYCLE
r, s, t, u
(E = HIGH after STORE initiation)
ADDRESS 6
25
25
t
cR
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AA
AA
AA
AA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAA
AAA
AAA
AAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
Ai
E
DQi
Output
t
cR
t
w(E)SR
ADDRESS 1
VALID
VALID
ADDRESS 6
t
d(E)S
/ t
d(E)R
27
28
/
25
t
h(A)SR
31
30
t
su(A)SR
29
t
dis(E)SR
26
t
h(A)SR
31
t
su(A)SR
29
t
w(E)SR
t
h(A)SR
31
30
t
su(A)SR
29
5
t
dis(E)
SOFTWARE CONTROLLED STORE/RECALL CYCLE
r, s, t, u
(E = LOW after STORE initiation)
t
dis(E)SR
26
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
t
d(E)S
/ t
d(E)R
27
28
/
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
t
w(E)SR
t
h(A)SR
31
30
t
su(A)SR
29
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
AAAA
High Impedance
High Impedance
相關(guān)PDF資料
PDF描述
U631H16BSC35 SOFTSTORE 2K X 8 NVSRAM
U631H16BSC45 SOFTSTORE 2K X 8 NVSRAM
U631H16BSK25 SOFTSTORE 2K X 8 NVSRAM
U631H16BSK35 SOFTSTORE 2K X 8 NVSRAM
U631H16BSK45 SOFTSTORE 2K X 8 NVSRAM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
U631H16BSC35 制造商:未知廠家 制造商全稱:未知廠家 功能描述:SOFTSTORE 2K X 8 NVSRAM
U631H16BSC45 制造商:未知廠家 制造商全稱:未知廠家 功能描述:SOFTSTORE 2K X 8 NVSRAM
U631H16BSK25 制造商:未知廠家 制造商全稱:未知廠家 功能描述:SOFTSTORE 2K X 8 NVSRAM
U631H16BSK35 制造商:未知廠家 制造商全稱:未知廠家 功能描述:SOFTSTORE 2K X 8 NVSRAM
U631H16BSK45 制造商:未知廠家 制造商全稱:未知廠家 功能描述:SOFTSTORE 2K X 8 NVSRAM
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