- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄225250 > STK16C88-3WF35I 32K X 8 NON-VOLATILE SRAM, 35 ns, PDIP28 PDF資料下載
參數(shù)資料
| 型號(hào)： | STK16C88-3WF35I |
| 元件分類： | SRAM |
| 英文描述： | 32K X 8 NON-VOLATILE SRAM, 35 ns, PDIP28 |
| 封裝： | 0.600 INCH, PLASTIC, DIP-28 |
| 文件頁(yè)數(shù)： | 13/13頁(yè) |
| 文件大?。?/td> | 341K |
| 代理商： | STK16C88-3WF35I |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)當(dāng)前第13頁(yè)
9
STK16C88-3
Jan, 2008
Document Control #ML0019 Rev 2.0
1.
Read address
0E38 (hex)
Valid READ
2.
Read address
31C7 (hex)
Valid READ
3.
Read address
03E0 (hex)
Valid READ
4.
Read address
3C1F (hex)
Valid READ
5.
Read address
303F (hex)
Valid READ
6.
Read address
0FC0 (hex)
Initiate STORE cycle
The software sequence must be clocked with E
controlled READs.
Once the sixth address in the sequence has been
entered, the STORE cycle will commence and the
chip will be disabled. It is important that READ
cycles and not WRITE cycles be used in the
sequence, although it is not necessary that G be
low for the sequence to be valid. After the t
STORE
cycle time has been fulfilled, the SRAM will again be
activated for READ and WRITE operation.
SOFTWARE NONVOLATILE RECALL
A software RECALL cycle is initiated with a
sequence of READ operations in a manner similar
to the software STORE initiation. To initiate the
RECALL
cycle, the following sequence of READ
operations must be performed:
1.
Read address
0E38 (hex)
Valid READ
2.
Read address
31C7 (hex)
Valid READ
3.
Read address
03E0 (hex)
Valid READ
4.
Read address
3C1F (hex)
Valid READ
5.
Read address
303F (hex)
Valid READ
6.
Read address
0C63 (hex)
Initiate RECALL cycle
Internally, RECALL is a two-step procedure. First,
the SRAM data is cleared, and second, the nonvola-
tile information is transferred into the SRAM cells.
After the t
RECALL cycle time the SRAM will once again
be ready for READ and WRITE operations. The
RECALL
operation in no way alters the data in the
nonvolatile storage elements. The nonvolatile data
can be recalled an unlimited number of times.
HARDWARE PROTECT
The
STK16C88-3
offers
hardware
protection
against inadvertent STORE operation and SRAM
WRITE
s during low-voltage conditions. When V
CC <
V
SWITCH, all software STORE operations and SRAM
WRITE
s are inhibited.
LOW AVERAGE ACTIVE POWER
The STK16C88-3 draws significantly less current
when it is cycled at rates slower than 35ns. Figure 2
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 = 3.6V, 100% duty cycle on chip
enable). Figure 3 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 STK16C88-3 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 READs to WRITEs; 5) the
operating temperature; 6) the V
CC level; and 7) I/O
loading.
Figure 2: ICC (max) Reads
0
10
20
30
40
50
100
150
200
Cycle Time (ns)
TTL
CMOS
A
v
era
ge
Acti
v
e
Cu
rren
t(m
A)
Figure 3: ICC (max) Writes
0
10
20
30
40
50
100
150
200
Cycle Time (ns)
TTL
CMOS
A
v
e
rag
e
Acti
ve
C
u
rre
nt
(m
A)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| STM1404ARMDQ6F | 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC16 |
| STM1404ATNDQ6F | 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC16 |
| STM1404CSMDQ6F | 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC16 |
| STM1404CRMDQ6F | 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC16 |
| STM1404CRNCQ6F | 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC16 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| STK16C88-3WF35ITR | 制造商:Cypress Semiconductor 功能描述:STK16C88-3WF35ITR - Tape and Reel |
| STK16C88-3WF35TR | 制造商:Cypress Semiconductor 功能描述:STK16C88-3WF35TR - Tape and Reel |
| STK16C88-WF25 | 功能描述:NVRAM 32Kbx8 4.5-5.5V AutoStorePlus 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 |
| STK16C88-WF25I | 功能描述:NVRAM 32Kbx8 4.5-5.5V AutoStorePlus 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 |
| STK16C88-WF25ITR | 制造商:Cypress Semiconductor 功能描述:STK16C88-WF25ITR - Tape and Reel |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。