參數(shù)資料
型號： M41T315V-85MH6E
廠商： STMICROELECTRONICS
元件分類： 時鐘/數(shù)據(jù)恢復及定時提取
英文描述： REAL TIME CLOCK, PDSO28
封裝： 0.330 INCH, LEAD FREE, PLASTIC, SOH-28
文件頁數(shù)： 3/30頁
文件大小： 324K
代理商： M41T315V-85MH6E
Obsolete
Product(s)
- Obsolete
Product(s)
Obsolete
Product(s)
- Obsolete
Product(s)
M41T315Y, M41T315V, M41T315W
Operation
2.1
Non-volatile supervisor operation
A switch is provided to direct power from the battery input or VCCI to VCCO with a maximum
voltage drop of 0.3 Volts. The VCCO output pin is used to supply uninterrupted power to
CMOS SRAM. The M41T315Y/V/W safeguards the clock and RAM data by power-fail
detection and write protection.
Power-fail detection occurs when VCCI falls below VPFD which is set by an internal bandgap
reference. The M41T315Y/V/W constantly monitors the VCCI supply pin. When VCCI is less
than VPFD, power-fail circuitry forces the chip enable output (CEO) to VCCI or VBAT-0.2 volts
for external RAM write protection. During nominal supply conditions, CEO will track CEI with
a propagation delay. Internally, the M41T315Y/V/W aborts any data transfer in progress
without changing any of the device registers and prevents future access until VCCI exceeds
VPFD. Figure 5 on page 9 illustrates a typical RAM/clock interface.
Figure 6.
Read mode waveforms
Table 2.
Operating modes
Mode
VCC
CEI
OE
WE
DQ
Power
Deselect
4.5 to 5.5V
or
3.0 to 3.6V
or
2.7 to 3.3V
VIH
X
Hi-Z
Standby
WRITE
VIL
XVIL
DIN
Hi-Z
Active
READ
VIL
VIH
Hi-Z
DOUT
Active
READ
VIL
VIH
Hi-Z
Active
Deselect
VSO to VPFD (min)
(1)
X
Hi-Z
CMOS standby
Deselect
≤ VSO(1)
X
Hi-Z
Battery back-up mode
1.
See Table 11 on page 21 for details.
DATA OUTPUT VALID
WE
CEI
OE
Q
tCW
tCO
tRC
tOW
tCOE
tODO
tRR
tOD
tOE
tOEE
AI04259
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M41T315V-85MH6F 功能描述:實時時鐘 Serial Access 85ns 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 時間格式:HH:MM:SS RTC 存儲容量: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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
M41T315V-85MH6TR 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial Access Phantom RTC Supervisor
M41T315V-85MQ6 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial access phantom RTC supervisor
M41T315V-85MQ6E 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial Access Phantom RTC Supervisor
M41T315V-85MQ6F 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial Access Phantom RTC Supervisor
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