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參數(shù)資料
| 型號： | X20C05JI-55 |
| 英文描述： | High Speed AUTOSTORE⑩ NOVRAM |
| 中文描述： | 高速自動存儲⑩NOVRAM |
| 文件頁數(shù)： | 12/19頁 |
| 文件大小： | 82K |
| 代理商： | X20C05JI-55 |
X20C05
12
AUTOSTORE Feature
The AUTOSTORE feature automatically saves the con-
tents of the X20C05’s RAM to the on-board bit-for-bit
shadow E
2
PROM at power-down. This circuitry insures
that no data is lost during accidental power-downs or
general system crashes, and is ideal for microprocessor
caching systems, embedded software systems, and
general system back-up memory.
The AUTOSTORE instruction (EAS) to the SDP register
sets the AUTOSTORE enable latch, allowing the X20C05
to automatically perform a store operation whenever V
CC
falls below the AUTOSTORE threshold (V
ASTH
). V
CC
must remain above the AUTOSTORE Cycle End Volt-
age (V
ASEND
) for the duration of the store cycle (t
ASTO
).
The detailed timing for this feature is illustrated in the
AUTOSTORE timing diagram, below. Once the
AUTOSTORE cycle is initiated, all other device functions
are inhibited.
AUTOSTORE CYCLE Timing Diagrams
3827 FHD F14
AUTOSTORE CYCLE LIMITS
X20C05
Symbol
Parameter
Min.
Max.
Units
t
ASTO
V
ASTH
V
ASEND
AUTOSTORE Cycle Time
AUTOSTORE Threshold Voltage
AUTOSTORE Cycle End Voltage
2.5
4.3
ms
V
V
3827 PGM T15
4.0
3.5
AS
tPUR
tASTO
tPUR
0V
VASTH
VCC
1
2
3
4
5
VCC
V
TIME (ms)
VASTH
VASEND
AUTOSTORE CYCLE IN PROGRESS
tASTO
STORE TIME
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| X20C16 | High Speed AUTOSTORE NOVRAM(高速帶自動存貯的CMOS非易失性靜態(tài)RAM，帶非易失使能輸入，AUTOSTORE 輸出引腳。) |
| X20C17 | High Speed AUTOSTORE NOVRAM(高速帶自動存貯的CMOS非易失性靜態(tài)RAM，標(biāo)準(zhǔn)的24腳 DIP 封裝) |
| X2212AP | NVRAM (EEPROM Based) |
| X2212DI | 200V Single N-Channel HEXFET Power MOSFET in a TO-262 package; A IRFSL38N20D with Standard Packaging |
| X2212DM | 75V Single N-Channel HEXFET Power MOSFET in a D-Pak package; Similar to IRFR2407 with Lead Free Packaging |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| X20C05JM-35 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:High Speed AUTOSTORE⑩ NOVRAM |
| X20C05JM-45 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:High Speed AUTOSTORE⑩ NOVRAM |
| X20C05JM-55 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:High Speed AUTOSTORE⑩ NOVRAM |
| X20C05P-35 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:High Speed AUTOSTORE⑩ NOVRAM |
| X20C05P-45 | 制造商:XICOR 制造商全稱:Xicor Inc. 功能描述:High Speed AUTOSTORE⑩ NOVRAM |
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