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參數(shù)資料
| 型號： | M48Z512AY-70PM9 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 4 Mbit 512Kb x8 ZEROPOWER SRAM |
| 中文描述： | 4兆位的SRAM 512KB的x8 ZEROPOWER |
| 文件頁數(shù)： | 3/17頁 |
| 文件大小： | 101K |
| 代理商： | M48Z512AY-70PM9 |
3/17
M48Z512A, M48Z512AY
The M48Z512A/512AY also has itsown Power-fail
Detect circuit. Thecontrol circuitry constantlymon-
itors the single 5V supply for an out of tolerance
condition. When V
CC
is out of tolerance, the circuit
write protects the SRAM, providing a high degree
of data security in the midst of unpredictable sys-
tem operation broughton by low V
CC
. As V
CC
falls
below approximately 3V, the control circuitry con-
nects the battery which maintains data until valid
power returns.
The ZEROPOWER RAM replaces industry stan-
dard SRAMs. It provides the nonvolatility of
PROMs without any requirement for special write
Figure 3. Block Diagram
AI02045
INTERNAL
BATTERY
E
VCC
VSS
VOLTAGE SENSE
AND
SWITCHING
CIRCUITRY
512K x
8
SRAM ARRAY
A0-A18
DQ0-DQ7
W
G
POWER
E
timing or limitations on the number of writes that
can be performed.
The M48Z512A/512AY has itsown Power-fail De-
tect Circuit. The control circuitry constantly moni-
tors the single 5V supply for an out of tolerance
condition. When V
CC
is out of tolerance, the circuit
write protects the SRAM, providing a high degree
of data security in the midst of unpredictable sys-
tem operations brought on by low V
CC
. As V
CC
falls below approximately 3V, the control circuitry
connects thebattery which sustainsdata untilvalid
power returns.
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| M48Z512AYPM | 4 Mbit 512Kb x8 ZEROPOWER SRAM |
| M48Z512AYSH | 4 Mbit 512Kb x8 ZEROPOWER SRAM |
| M48Z512A-85PM9 | 4 Mbit 512Kb x8 ZEROPOWER SRAM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M48Z512AY-7-PM1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:4 Mbit (512 Kbit x 8) ZEROPOWER SRAM |
| M48Z512AY-7-PM6 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:4 Mbit (512 Kbit x 8) ZEROPOWER SRAM |
| M48Z512AY-85CS1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:4 Mbit 512Kb x8 ZEROPOWER SRAM |
| M48Z512AY-85CS9 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:4 Mbit 512Kb x8 ZEROPOWER SRAM |
| M48Z512AY-85PM1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:4 Mbit (512 Kbit x 8) ZEROPOWER SRAM |
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