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參數(shù)資料
| 型號(hào)： | M41ST95W |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 5.0 or 3.0V, 512 bit (64 bit x8) Serial RTC (SPI) SRAM and NVRAM Supervisor(5.0/3.0V, 512位(64位x8)串行RTC(SPI) SRAM和NVRAM監(jiān)控電路) |
| 中文描述： | 5.0或3.0V，512位（64位× 8）串行時(shí)鐘（SPI）的靜態(tài)存儲(chǔ)器和NVRAM主管（5.0/3.0V，512位（64位× 8）串行時(shí)鐘（SPI）的靜態(tài)存儲(chǔ)器和NVRAM中監(jiān)控電路） |
| 文件頁數(shù)： | 22/35頁 |
| 文件大?。?/td> | 602K |
| 代理商： | M41ST95W |
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M41ST95Y*, M41ST95W
22/35
Power-fail INPUT/OUTPUT
The Power-Fail Input (PFI) is compared to an in-
ternal reference voltage (1.25V). If PFI is less than
the power-fail threshold (V
PFI
), the Power-Fail
Output (PFO) will go low. This function is intended
for use as an under-voltage detector to signal a
failing power supply. Typically PFI is connected
through an external voltage divider (see Figure
17
)
to either the unregulated DC input (if it is available)
or the regulated output of the V
CC
regulator. The
voltage divider can be set up such that the voltage
at PFI falls below V
PFI
several milliseconds before
the regulated V
CC
input to the M41ST95Y/W or the
microprocessor drops below the minimum operat-
ing voltage.
During battery back-up, the power-fail comparator
turns off and PFO goes (or remains) low. This oc-
curs after V
CC
drops below V
PFD
(min). When pow-
er returns, PFO is forced high, irrespective of V
PFI
for the write protect time (t
REC
), which is the time
from V
PFD
(max) until the inputs are recognized. At
the end of this time, the power-fail comparator is
enabled and PFO follows PFI. If the comparator is
unused, PFI should be connected to V
SS
and PFO
left unconnected.
Figure 17. Power-Fail Comparator Hookup
Note: 1. Available only in 28-pin, 300mil SOIC (MX) package.
AI06373
V
CC
V
OUT
V
CC
PFO
SDI
SCL
M41ST95Y/W
WDI
RSTIN2
RSTIN1
PFI
V
SS
V
BAT
IRQ/FT/OUT
SQW
RST
SDO
Unregulated
Voltage
Regulator
V
CC
V
IN
E
EX
E
CON
Pushbutton
Reset
F
To RST
To LED Display
To NMI
To INT
F
32k
(1)
R1
R2
V
CC
E
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| M41T00SC64MY6E | Real-Time Clock + 64Kbit (8192 x 8) EEPROM |
| M41T00SC64MY6F | Real-Time Clock + 64Kbit (8192 x 8) EEPROM |
| M41T00S | Serial Access Real-Time Clock(串行存取實(shí)時(shí)時(shí)鐘) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M41ST95WMH6 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 or 3.0V, 512 bit (64 bit X 8) Serial RTC (SPI) SRAM and NVRAM Supervisor |
| M41ST95WMH6E | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 or 3.0V, 512 bit (64 bit X 8) Serial RTC (SPI) SRAM and NVRAM Supervisor |
| M41ST95WMH6F | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 or 3.0V, 512 bit (64 bit X 8) Serial RTC (SPI) SRAM and NVRAM Supervisor |
| M41ST95WMH6TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 or 3.0V, 512 bit (64 bit X 8) Serial RTC (SPI) SRAM and NVRAM Supervisor |
| M41ST95WMX6 | 功能描述:實(shí)時(shí)時(shí)鐘 Serial 512 (64x8) RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
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