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参数资料
| 型号： | SP6342EK1-L-R-A-B/TR |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO6 |
| 封装： | LEAD FREE, MO-193AA, TSOT-6 |
| 文件页数： | 10/32页 |
| 文件大小： | 1342K |
| 代理商： | SP6342EK1-L-R-A-B/TR |
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Jun 27-06
SP6330 Family: Selecting a Multi-Voltage Supervisor
2006 Sipex Corporation
Page 3 of 6
Manual Reset Input (Active Low) – MRIB
The manual reset input allows the user to manually trigger a reset when
monitored voltages are within tolerance. This is useful for resetting the
microprocessor when it locks up due to software issues. A push-button type
switch can be used to allow the user to trigger a reset externally. However, since
a push button switch will bounce several times, a debounce element is needed.
The manual reset input signal may also be a logic signal from an I/O line,
watchdog timer or a power fail output.
Watchdog Input – WDI
The watchdog checks for proper software execution. If the software locks up or
enters into an unwanted, loop the watchdog timer can either assert a reset output
or a watchdog output. Some members of the SP6330 family offer a watchdog
output while others do not. The watchdog has an internal timer that has a typical
watchdog timeout period of 1.6 seconds. If the watchdog input (WDI) does not
detect a transition within 1.6 seconds, a reset or watchdog output (WDO) will be
generated. The watchdog input is usually connected to an I/O line for monitoring
software activity. The watchdog circuit is useful for generating a reset or Non-
Maskable Interrupt (NMI) signal during software lock up conditions without
human intervention. Floating the WDI will disable the watchdog feature.
Watchdog Output (Active Low) – WDOB
The Watchdog output is active low and can be either an open drain or push-pull
output. If WDI remains at “HIGH” or “LOW” logic level for longer than the
watchdog timeout period, the internal watchdog timer overflows and the WDOB
will be asserted. Additionally, if the reset output is asserted due to an under-
voltage condition, at any voltage input the WDOB would also be asserted.
Floating WDI will not disable the watchdog timer in devices with dedicated
WDOB output.
Power Fail Input (PFI)
The power fail input is used to monitor the unregulated DC voltage or other
upstream voltage and to alert the system that a brownout or power failure is
imminent. When the PFI input is tripped, it can inform the system to start a
power-down routine in order to save important data before a reset output is
asserted. The power fail input has a threshold of 0.5V. By using a voltage divider
the user can monitor any upstream voltage. Connect PFI to V1 or GND if not used.
相关PDF资料 |
PDF描述 |
|---|---|
| SP6342EK1-L-S-B-D/TR | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO6 |
| SP6342EK1-L-U-B-C | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO6 |
| SP6342EK1-L-U-C-D | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO6 |
| SP6342EK1-L-U-E-D | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO6 |
| SP6342EK1-L-T-A-C | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO6 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SP64/1.2/BLUE | 制造商:Farnell / Pro-Power 功能描述:HEATSHRINK 6.4MM BLUE 1.2M 制造商:pro-power 功能描述:HEATSHRINK, 6.4MM, BLUE, 1.2M 制造商:pro-power 功能描述:HEATSHRINK, 6.4MM, BLUE, 1.2M; I.D. Supplied - Metric:6.4mm; I.D. Supplied - Imperial:0.251"; I.D. Recovered Max - Metric:3.2mm; I.D. Recovered Max - Imperial:0.125"; Shrink Ratio:2:1; Shrink Tubing / Boot Material:PO (Polyolefin); ;RoHS Compliant: Yes |
| SP64/1.2/BLUE | 制造商:Farnell / Pro-Power 功能描述:HEAT SHRINK 6.4MM BLUE 1.2M |
| SP64/1.2/BROWN | 制造商:Farnell / Pro-Power 功能描述:HEAT SHRINK 6.4MM BROWN 1.2M |
| SP64/1.2/BROWN | 制造商:Farnell / Pro-Power 功能描述:HEAT SHRINK 6.4MM BROWN 1.2M |
| SP64/1.2/CLEAR | 制造商:Farnell / Pro-Power 功能描述:HEAT SHRINK 6.4MM CLEAR 1.2M |
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