- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄359067 > M48TMH1TR (意法半導(dǎo)體) 5V PC REAL TIME CLOCK PDF資料下載
參數(shù)資料
| 型號(hào)： | M48TMH1TR |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 5V PC REAL TIME CLOCK |
| 中文描述： | 5V的電腦實(shí)時(shí)時(shí)鐘 |
| 文件頁(yè)數(shù)： | 18/23頁(yè) |
| 文件大?。?/td> | 163K |
| 代理商： | M48TMH1TR |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)當(dāng)前第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)
M48T86
18/23
Figure 14. Supply Voltage Protection
AI02169
VCC
0.1
μ
F
DEVICE
VCC
VSS
POWER SUPPLY DECOUPLING
and UNDERSHOOT PROTECTION
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
14) 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 nega-
tive spikes can cause data corruption in the SRAM
while in battery backup mode. To protect from
these voltage spikes, it is recommended to con-
nect 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.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| M48TY-85MH1 | 3.3V-5V TIMEKEEPER CONTROLLER |
| M48TY-85MH1TR | 3.3V-5V TIMEKEEPER CONTROLLER |
| 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 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M48TPC1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5V PC REAL TIME CLOCK |
| M48TPC1TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5V PC REAL TIME CLOCK |
| M4-8TP-RJ45 | 制造商:Hirschmann Electronics GmbH & Co Kg 功能描述:Media Module, MACH 4000, 8xRJ45 (10/100 Meg) + 8xRJ45 (10 Meg) Copper Ports |
| M48TV-70MH1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V TIMEKEEPER CONTROLLER |
| M48TV-70MH1TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V TIMEKEEPER CONTROLLER |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。