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參數(shù)資料
| 型號(hào)： | M48TY-85MH1TR |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 3.3V-5V TIMEKEEPER CONTROLLER |
| 中文描述： | 3.3 - 5V的計(jì)時(shí)控制器 |
| 文件頁(yè)數(shù)： | 23/33頁(yè) |
| 文件大?。?/td> | 477K |
| 代理商： | M48TY-85MH1TR |
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M48T201Y, M48T201V
V
CC
Noise And Negative Going Transients
I
CC
transients, including those produced by output
switching, can produce voltage fluctuations, re-
sulting in spikes on the V
CC
bus. These transients
can be reduced if capacitors are used to store en-
ergy which stabilizes the V
CC
bus. The energy
stored in the bypass capacitors will be released as
low going spikes are generated or energy will be
absorbed when overshoots occur. A ceramic by-
pass capacitor value of 0.1μF (as shown in Figure
13
) is recommended in order to provide the need-
ed filtering.
In addition to transients that are caused by normal
SRAM operation, power cycling can generate neg-
ative voltage spikes on V
CC
that drive it to values
below V
SS
by as much as one volt. These negative
spikes can cause data corruption in the SRAM
while in battery backup mode. To protect from
these voltage spikes, STMicroelectronics recom-
mends connecting a schottky diode from V
CC
to
V
SS
(cathode connected to V
CC
, anode to V
SS
).
Schottky diode 1N5817 is recommended for
through hole and MBRS120T3 is recommended
for surface mount.
Figure 13. Supply Voltage Protection
AI00605
VCC
0.1
μ
F
DEVICE
VCC
VSS
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M48TY-85PM1 | 3.3V-5V 1 Mbit 128Kb x8 TIMEKEEPER SRAM |
| M48Z02 | 16 Kbit 2Kb x 8 ZEROPOWER SRAM |
| M48Z02-150PC1 | FILTER SAW BANDPASS 44MHZ |
| M48Z02-150PC1TR | FILTER SAW BANDPASS 44MHZ 5-SIP |
| M48Z02-150PC6 | 5V, 16 Kbit (2Kb x 8) ZEROPOWER SRAM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M48TY-85PM1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V 1 Mbit 128Kb x8 TIMEKEEPER SRAM |
| M48Z02 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5V, 16Kbit (2Kb x 8) ZEROPOWER SRAM |
| M48Z02_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5V, 16Kbit (2Kb x 8) ZEROPOWER SRAM |
| M48Z02_10 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5 V, 16 Kbit (2 Kb x 8) ZEROPOWER? SRAM |
| M48Z02_11 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5 V, 16 Kbit (2 Kb x 8) ZEROPOWER?? SRAM |
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