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參數資料
| 型號： | STK15C68-S25I |
| 元件分類： | SRAM |
| 英文描述： | 8K X 8 NON-VOLATILE SRAM, 25 ns, PDSO28 |
| 封裝： | 0.350 INCH, PLASTIC, SOIC-28 |
| 文件頁數： | 1/10頁 |
| 文件大小： | 354K |
| 代理商： | STK15C68-S25I |
March 2006
1
Document Control # ML0009 rev 0.2
STK15C68
8K x 8 AutoStore nvSRAM
QuantumTrap CMOS
Nonvolatile Static RAM
Obsolete - Not Recommend for new Deisgns
FEATURES
Nonvolatile Storage without Battery Problems
Directly Replaces 8K x 8 Static RAM, Battery-
Backed RAM or EEPROM
25ns, 35ns and 45ns Access Times
STORE to Nonvolatile Elements Initiated by
Software or AutoStore on Power Down
RECALL to SRAM Initiated by Software or
Power Restore
10mA Typical I
CC at 200ns Cycle Time
Unlimited READ, WRITE and RECALL Cycles
1,000,000 STORE Cycles to Nonvolatile Ele-
ments
100-Year Data Retention over Full Industrial
Temperature Range
No Data Loss from Undershoot
Commercial and Industrial Temperatures
28-Pin 600 or 300 mil PDIP and 350 mil SOIC
Packages
DESCRIPTION
The STK15C68 is a fast SRAM with a nonvolatile ele-
ment incorporated in each static memory cell. The
SRAM
can be read and written an unlimited number of
times, while independent nonvolatile data resides in
Nonvolatile Elements. Data transfers from the SRAM to
the Nonvolatile Elements (the STORE operation) can
take place automatically on power down using charge
stored in system capacitance. Transfers from the Non-
volatile Elements to the SRAM (the RECALL operation)
take place automatically on restoration of power. Initia-
tion of STORE and RECALL cycles can also be con-
trolled by entering control sequences on the SRAM
inputs. The STK15C68 is pin-compatible with 8k x 8
SRAM
s and battery-backed SRAMs, allowing direct
substitution while enhancing performance. A similar
device (STK16C68) with an internally integrated
capacitor is available for systems with very fast slew
rates. The STK12C68, which uses an external capaci-
tor, is an alternative for these applications.
BLOCK DIAGRAM
COLUMN I/O
COLUMN DEC
STATIC RAM
ARRAY
128 x 512
ROW
DECODER
IN
PU
T
BU
FF
ER
S
QUANTUM TRAP
128 x 512
STORE/
RECALL
CONTROL
STORE
RECALL
POWER
CONTROL
A5
A6
A9
A11
A12
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
SOFTWARE
DETECT
VCC
A0 - A12
G
E
W
A8
A7
A10
A3
A2
A0 A1
A4
PIN NAMES
A0 - A12
Address Inputs
W
Write Enable
DQ0 - DQ7
Data In/Out
E
Chip Enable
G
Output Enable
VCC
Power (+ 5V)
VSS
Ground
PIN CONFIGURATIONS
NC
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
VSS
VCC
NC
A8
A9
A11
G
W
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
A10
E
DQ7
DQ6
DQ5
DQ4
DQ3
28 - 300 PDIP
28 - 600 PDIP
28 - 350 SOIC
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相關代理商/技術參數 |
參數描述 |
|---|---|
| STK15C88-N35I | 制造商:Cypress Semiconductor 功能描述: 制造商:Rochester Electronics LLC 功能描述: |
| STK15C88-NF25 | 功能描述:NVRAM 32Kbx8 4.5-5.5V AutoStore RoHS:否 制造商:Maxim Integrated 數據總線寬度:8 bit 存儲容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時間: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 |
| STK15C88-NF25I | 功能描述:NVRAM 32Kbx8 4.5-5.5V AutoStore RoHS:否 制造商:Maxim Integrated 數據總線寬度:8 bit 存儲容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時間: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 |
| STK15C88-NF25ITR | 功能描述:NVRAM 32Kbx8 4.5-5.5V AutoStore RoHS:否 制造商:Maxim Integrated 數據總線寬度:8 bit 存儲容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時間: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 |
| STK15C88-NF25TR | 功能描述:NVRAM 32Kbx8 4.5-5.5V AutoStore RoHS:否 制造商:Maxim Integrated 數據總線寬度:8 bit 存儲容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時間: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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