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參數(shù)資料
| 型號： | U631H16 |
| 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)： | 1/12頁 |
| 文件大?。?/td> | 275K |
| 代理商： | U631H16 |
1
December 12, 1997
U631H16
SoftStore 2K x 8 nvSRAM
p
Packages: PDIP28 (300 mil)
PDIP28 (600 mil)
SOP28 (300 mil)
SOP24 (300 mil)
Description
The U631H16 has two separate
modes of operation: SRAM mode
and nonvolatile mode. In SRAM
mode, the memory operates as an
ordinary static RAM. In nonvolatile
operation, data is transferred in
parallel from SRAM to EEPROM or
from EEPROM to SRAM. In this
mode SRAM functions are disab-
led.
The U631H16 is a fast static RAM
(25, 35, 45 ns), with a nonvolatile
electrically
erasable
(EEPROM) element incorporated
in each static memory cell. The
SRAM can be read and written an
unlimited number of times, while
independent nonvolatile data resi-
des in EEPROM.
PROM
Data transfers from the SRAM to
the EEPROM (the STORE opera-
tion), or from the EEPROM to the
SRAM (the RECALL ) operation)
are
initiated
through
sequences.
The U631H16 combines the high
performance and ease of use of a
fast SRAM with nonvolatile data
integrity.
Once a STORE cycle is initiated,
further input or output are disabled
until the cycle is completed.
Because a sequence of addresses
is used for STORE initiation, it is
important that no other read or write
accesses intervene in the sequence
or the sequence will be aborted.
Internally, RECALL is a two step
procedure. First, the SRAM data is
cleared and second, the nonvolatile
information is transferred into the
SRAM cells.
The RECALL operation in no way
alters the data in the EEPROM
cells. The nonvolatile data can be
recalled an unlimited number of
times.
software
Features
p
High-performance CMOS non-
volatile static RAM 2048 x 8 bits
25, 35 and 45 ns Access Times
12, 20 and 25 ns Output Enable
Access Times
Software STORE Initiation
(STORE Cycle Time < 10 ms)
Automatic STORE Timing
10
5
STORE cycles to EEPROM
10 years data retention in
EEPROM
Automatic RECALL on Power Up
Software RECALL Initiation
(RECALL Cycle Time < 20
μ
s)
Unlimited RECALL cycles from
EEPROM
Unlimited Read and Write to
SRAM
Single 5 V
±
10 % Operation
p
Operating temperature ranges:
0 to 70 °C
-40 to 85 °C
p
CECC 90000 Quality Standard
p
ESD characterization according
p
MIL STD 883C M3015.7-HBM
(classification see IC Code
Numbers)
p
p
p
p
p
p
p
p
p
p
p
Pin Configuration
Pin Description
Top View
1
2
3
n.c.
n.c.
A7
VCC
W
n.c.
28
27
26
4
5
6
7
8
9
10
11
A6
A5
A4
A3
A2
A1
A0
A8
A9
n.c.
G
A10
E
DQ7
DQ6
25
24
23
22
21
20
19
18
12
13
14
DQ1
DQ2
VSS
DQ5
DQ4
DQ3
17
16
15
DQ0
PDIP
SOP
28
Signal Name
Signal Description
A0 - A10
DQ0 - DQ7
Address Inputs
Data In/Out
Chip Enable
Output Enable
Write Enable
Power Supply Voltage
Ground
E
G
W
VCC
VSS
Top View
2
3
4
5
6
7
8
9
A6
A5
A4
A3
A2
A1
A0
A8
A9
W
G
A10
E
DQ7
DQ6
23
22
21
20
19
18
17
16
1
A7
VCC
24
10
11
12
DQ1
DQ2
VSS
DQ5
DQ4
DQ3
15
14
13
DQ0
SOP
24
相關PDF資料 |
PDF描述 |
|---|---|
| U631H16BD1C25 | SOFTSTORE 2K X 8 NVSRAM |
| U631H16BD1C35 | SOFTSTORE 2K X 8 NVSRAM |
| U631H16BD1C45 | SOFTSTORE 2K X 8 NVSRAM |
| U631H16BD1K25 | SOFTSTORE 2K X 8 NVSRAM |
| U631H16BD1K35 | SOFTSTORE 2K X 8 NVSRAM |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| U631H16BD1C25 | 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 |
| U631H16BD1C35 | 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 |
| U631H16BD1C45 | 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 |
| U631H16BD1K25 | 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 |
| U631H16BD1K35 | 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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