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參數(shù)資料
| 型號： | M41T315Y-65MQ6F |
| 廠商： | 意法半導體 |
| 英文描述： | Serial Access Phantom RTC Supervisor |
| 中文描述： | 串行訪問幻影時鐘監(jiān) |
| 文件頁數(shù)： | 8/24頁 |
| 文件大?。?/td> | 404K |
| 代理商： | M41T315Y-65MQ6F |
M41T315Y*, M41T315V, M41T315W
8/24
Non-volatile Supervisor Operation
A switch is provided to direct power from the bat-
tery input or V
CCI
to V
CCO
with a maximum voltage
drop of 0.3 Volts. The V
CCO
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 V
CCI
falls below
V
PFD
which is set by an internal bandgap refer-
ence. The M41T315Y/V/W constantly monitors
the V
CCI
supply pin. When V
CCI
is less than V
PFD
,
power-fail circuitry forces the chip enable output
(
CEO
) to V
CCI
or V
BAT
-0.2 volts for external RAM
write protection. During nominal supply conditions,
CEO
will track
CEI
with a propagation delay. Inter-
nally, the M41T315Y/V/W aborts any data transfer
in progress without changing any of the device
registers and prevents future access until V
CCI
exceeds V
PFD
.
Figure 7., page 6
illustrates a typi-
cal RAM/clock interface.
Figure 8. READ Mode Waveforms
Figure 9. WRITE Mode Waveforms
DATA OUTPUT VALID
WE
CEI
OE
Q
tCW
tCO
tRC
tOW
tCOE
tODO
tRR
tOD
tOE
tOEE
AI04259
DATA INPUT STABLE
OE
D
CEI
tWP
tWC
tCW
tDH
tWR
tWR
WE
t
DH
tDS
AI04261
相關PDF資料 |
PDF描述 |
|---|---|
| M41T315Y-65MQ6TR | Serial Access Phantom RTC Supervisor |
| M41T315Y-85MH6E | Serial Access Phantom RTC Supervisor |
| M41T315Y-85MH6F | Serial Access Phantom RTC Supervisor |
| M41T315Y-85MH6TR | Serial Access Phantom RTC Supervisor |
| M41T315Y-85MQ6E | Serial Access Phantom RTC Supervisor |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| M41T315Y-65MQ6TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial Access Phantom RTC Supervisor |
| M41T315Y-85MH6E | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial Access Phantom RTC Supervisor |
| M41T315Y-85MH6F | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial access phantom RTC supervisor |
| M41T315Y-85MH6TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial Access Phantom RTC Supervisor |
| M41T315Y-85MQ6 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial access phantom RTC supervisor |
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