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參數(shù)資料
| 型號： | AS1926-BSTT-D07 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Low Voltage, Manual Reset; Package Type: SOT23-5; Reset Type: Open-Drain Active Low; Timeout Period: 140,00; Supervised Voltages (IN1): 0,81 |
| 封裝： | SOT23-5 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大小： | 339K |
| 代理商： | AS1926-BSTT-D07 |
www.austriamicrosystems.com
Revision 1.00
9 - 12
AS1925/AS1926
Data Sheet - Application Information
Interfacing to Bi-Directional Microprocessor Reset Pins
Because the RESETN output of the AS1926 is open drain, this device interfaces easily with microprocessors that have
bidirectional reset pins. Connecting the AS1926 RESETN output directly to the microprocessor RESETN pin with a
single pullup resistor allows either device to assert reset (
Figure 11 on page 9
).
Figure 11. Interfacing to Microprocessors with Bidirectional Reset Pins
Using the AS1926 Open-Drain RESETN Output with Multiple Supplies
In a typical application, the pullup resistor connected to the AS1926 connects to the voltage being monitored at pin
V
CC
. However, some systems use an open-drain output to level-shift from the monitored supply to reset circuitry pow-
ered by another supply
(see Figure 12)
.
As V
CC
decreases, so does the ability of the AS1926 to sink current at RESETN. RESETN is pulled high as V
CC
decreases toward 0V. The voltage where this occurs depends on the value of the pullup resistor and the supply voltage
to which it is connected.
Figure 12. AS1926 Open-Drain RESETN Output with Multiple Supplies
AS1926
CPU
V
CC
GND
V
CC
RESETN
GND 2
5
V
CC
1
RESETN
+0.9V
AS1926
CPU
GND
+5.0V
RESETN
V
CC
R
PULLUP
GND 2
5
V
CC
1
RESETN
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AS1972 | Dual Comparator, Push-Pull; Package Type: MSOP-8 |
| AS1974 | Quad Comparator, Push-Pull; Package Type: TSSOP-14 |
| AS1975 | Quad Comparator, Open-Drain; Package Type: TSSOP-14 |
| AS1970-T | Single Comparator, Push-Pull; Package Type: SOT23-5 |
| AS1973-T | Dual Comparator. Open-Drain; Package Type: MSOP-8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS1926D07-T | 制造商:ams 功能描述:IC SUPERVISOR MAN RESET SOT23-5 |
| AS1927L-BTDT | 制造商:ams 功能描述:Supervisory Circuits |
| AS1927L-BTDT33S | 制造商:ams 功能描述:IC SUPERVISOR ACT LOW 6TDFN 制造商:ams 功能描述:T&R / TDFN 2x2 6 |
| AS1927L-BTDT-33s-1k | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| AS1927LBTDT33S-1K | 制造商:ams 功能描述:TDFN 2x2 6 |
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