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參數(shù)資料
| 型號： | SA56606-46 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | CMOS system reset |
| 中文描述： | CMOS系統(tǒng)復(fù)位 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 122K |
| 代理商： | SA56606-46 |
Philips Semiconductors
Product data
SA56606-XX
CMOS system reset
2001 Jun 19
9
Application information
SL01371
SA56606-XX
V
SUPPLY
GND
V
DD
V
SS
V
OUT
RESET
CPU
R
PU
Figure 14. Conventional reset application.
The Power ON Reset Circuit shown in Figure 15 is an example of
how to obtain a stable reset condition upon power-up. If the power
supply voltage rises abruptly, the RESET may go HIGH momentarily
when V
DD
is below the minimum operating voltage (0.95 V). To
overcome this, a resistor (R) is placed between positive supply and
the V
DD
pin with a capacitor from the V
DD
pin to ground.
SL01372
SA56606-XX
V
SUPPLY
GND
V
DD
V
SS
V
OUT
RESET
CPU
R
PU
D
C
R
Figure 15. Power ON reset circuit.
SL01373
SA56606-XX
OUTPUT
R
12
R
11
V
SUPPLY
A
V
DD
V
SS
CURRENT CHANGES
R
PU
Figure 16. High impedance supply operating problems.
Significant voltage variations of V
DD
may occur when the device is
operated from high impedance power sources. When the device
asserts or releases a reset, V
DD
variations are produced as a result
of the voltage drop developed across R
11
due to the current
variations through the resistor R
11
(representing the supply
impedance). If the V
DD
variations are large, such that they exceed
the Detection Hysteresis, the output of the device can oscillate from
a HIGH state to a LOW state. The user should avoid using high
impedance V
DD
sources to prevent such situations.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SA56606-46GW | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:CMOS system reset |
| SA56606-47 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:CMOS system reset |
| SA56606-47GW | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:CMOS system reset |
| SA56606-XX | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:CMOS system reset |
| SA56606-XXGW | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:CMOS system reset |
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