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參數(shù)資料
| 型號(hào)： | STK22C48S45I |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 2K x 8 AutoStore⑩ nvSRAM QuantumTrap⑩ CMOS Nonvolatile Static RAM |
| 中文描述： | 2K × 8自動(dòng)存儲(chǔ)非易失QuantumTrap⑩⑩的CMOS非易失性靜態(tài)隨機(jī)存儲(chǔ)器 |
| 文件頁數(shù)： | 9/11頁 |
| 文件大?。?/td> | 194K |
| 代理商： | STK22C48S45I |
STK22C48
December 2002
9
Document Control # ML0004 rev 0.0
will stop trying to pull HSB low and abort the
STORE
attempt.
HARDWARE PROTECT
The STK22C48 offers hardware protection against
inadvertent
STORE
operation and
SRAM WRITE
s dur-
ing low-voltage conditions. When V
CAP
< V
SWITCH
, all
externally initiated
STORE
operations and
SRAM
WRITE
s are inhibited.
AutoStore
can be completely disabled by tying
V
CCX
to ground and applying + 5V to V
CAP
. This is the
AutoStore
Inhibit mode; in this mode
STORE
s are
only initiated by explicit request using the HSB pin.
LOW AVERAGE ACTIVE POWER
The STK22C48 draws significantly less current
when it is cycled at times longer than 50ns. Figure 5
shows the relationship between I
CC
and
READ
cycle
time. Worst-case current consumption is shown for
both
CMOS
and
TTL
input levels (commercial tem-
perature range, V
CC
= 5.5V, 100% duty cycle on chip
enable). Figure 6 shows the same relationship for
WRITE
cycles. If the chip enable duty cycle is less
than 100%, only standby current is drawn when the
chip is disabled. The overall average current drawn
by the STK22C48 depends on the following items:
1)
CMOS
vs.
TTL
input levels; 2) the duty cycle of
chip enable; 3) the overall cycle rate for accesses;
4) the ratio of
READ
s to
WRITE
s; 5) the operating
temperature; 6) the V
cc
level; and 7) I/O loading.
Figure 5: I
cc
(max) Reads
0
20
40
60
80
100
50
100
Cycle Time (ns)
150
200
TTL
CMOS
A
Figure 6: I
cc
(max) Writes
0
20
40
60
80
100
50
100
Cycle Time (ns)
150
200
TTL
CMOS
A
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PDF描述 |
|---|---|
| STK22C48W25 | 2K x 8 AutoStore⑩ nvSRAM QuantumTrap⑩ CMOS Nonvolatile Static RAM |
| STK25CA8 | 128K x 8 AutoStore nvSRAM CMOS Nonvolatile Static RAM Module |
| STK25C48-W30 | DIODE TVS 5.0V 400W BIDIR 5% SMA |
| STK25C48-W30I | DIODE TVS 54V 400W BIDIR 5% SMA |
| STK25CA8-D35 | 128K x 8 AutoStore nvSRAM CMOS Nonvolatile Static RAM Module |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| STK22C48-S45I | 制造商:SIMTEK 制造商全稱:Simtek Corporation 功能描述:2Kx8 AutoStore nvSRAM |
| STK22C48-S45ITR | 制造商:SIMTEK 制造商全稱:Simtek Corporation 功能描述:2Kx8 AutoStore nvSRAM |
| STK22C48-S45TR | 制造商:SIMTEK 制造商全稱:Simtek Corporation 功能描述:2Kx8 AutoStore nvSRAM |
| STK22C48-SF25 | 功能描述:NVRAM 2Kbx8 4.5-5.5V AutoStore RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度:8 bit 存儲(chǔ)容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時(shí)間:70 ns 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 工作電流:85 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝 / 箱體:EDIP 封裝:Tube |
| STK22C48-SF25I | 功能描述:NVRAM 2Kbx8 4.5-5.5V AutoStore RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度:8 bit 存儲(chǔ)容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時(shí)間:70 ns 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 工作電流:85 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝 / 箱體:EDIP 封裝:Tube |
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