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參數(shù)資料
| 型號(hào)： | CAT1832V-GT3 |
| 英文描述： | 5V and 3.3V Supply Monitor, Watchdog Timer, Manual Reset, with Active High & Low Resets |
| 中文描述： | 5V和3.3V電源監(jiān)視器，看門狗定時(shí)器，手動(dòng)復(fù)位，與Active高 |
| 文件頁數(shù)： | 5/12頁 |
| 文件大?。?/td> | 326K |
| 代理商： | CAT1832V-GT3 |
CAT1232, CAT1832
APPLICATION INFORMATION
SUPPLY VOLTAGE MONITOR
Reset Signal Polarity and Output Stage Structure
RESET
ˉˉˉˉˉˉ is an active LOW signal. It is developed with
an open drain driver in the CAT1232LP. A pull-up
resistor is required, typical values are 10k
to 50k
.
The CAT1832 uses a CMOS push-pull output stage
for the ˉˉˉˉˉˉ.
RESET is an active High signal developed by a
CMOS push-pull output stage and is the logical
opposite to ˉˉˉˉˉˉ.
Trip Point Tolerance Selection
The TOL input is used to select the V
CC
trip point
threshold. This selection is made connecting the
TOL input to ground or V
CC
. Connecting TOL to
Ground makes the V
CC
trip threshold 4.62V for the
CAT1232LP and 2.88V for the CAT1832.
Connecting TOL to V
CC
makes the V
CC
trip threshold
4.37V for the CAT1232LP and 2.55V for the
CAT1832.
After V
CC
has risen above the trip point set by TOL,
RESET and ˉˉˉˉˉˉremain active for a minimum time
period of 250ms.
On power-down, once V
CC
falls below the reset
threshold the RESET outputs will remain active and
are guaranteed valid down to a V
CC
level of 1.0V.
Trip Point Voltage (V)
MIN
NOMINAL
Tolerance
Select
Voltage
Trip Point
Tolerance
MAX
CAT1232LP
TOL = V
CAT1232LP
TOL = GND
CAT1832
TOL = V
CAT1832
TOL = GND
10 %
4.25
4.37
4.49
CC
5 %
4.50
4.62
4.74
20 %
2.47
2.55
2.64
CC
10 %
2.80
2.88
2.97
Manual Reset Operation
Push-button input, ˉˉˉˉˉˉ, allows the user to issue
reset signals. The pushbutton input is debounced and
is pulled high through an internal 40k
resistor.
When ˉˉˉˉˉˉ is held low for the minimum time of
20ms, both resets become active and remain active
for a minimum time period of 250ms after PBRST
returns high.
No external pull-up resistor is required, since ˉˉˉˉˉˉ
is pulled high by an internal 40k
resistor.
PBRST
ˉˉˉˉˉˉ can be driven from a TTL or CMOS logic line
or short-ed to ground with a mechanical switch.
Figure 1. Timing Diagram: Power Up
Figure 2. Timing Diagram: Power Down
V
CCTP(MAX)
V
CCTP
V
CCTP(MIN)
V
CC
RESET
RESET
t
F
V
OH
V
OL
t
RPD
V
CCTP(MAX)
V
CCTP
V
CCTP(MIN)
V
CC
RESET
RESET
t
R
t
RPU
V
OH
V
OL
Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
5
Doc. No. MD-3018 Rev. D
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CAT1832Z-GT3 | 5V and 3.3V Supply Monitor, Watchdog Timer, Manual Reset, with Active High & Low Resets |
| CAT24C00JITE13 | 128-bit Serial EEPROM |
| CAT24C00YITE13 | 128-bit Serial EEPROM |
| CAT24C00UETE13 | 320 x 240 pixel format, Chip-On-Glass Technology |
| CAT24C00WETE13 | 128-bit Serial EEPROM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CAT1832V-T3 | 功能描述:監(jiān)控電路 3.3 V 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 |
| CAT1832Z | 功能描述:監(jiān)控電路 3.3 V 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 |
| CAT1832ZG | 制造商:Rochester Electronics LLC 功能描述: 制造商:Catalyst Semiconductor 功能描述: |
| CAT1832Z-G | 功能描述:監(jiān)控電路 Supervisor,3.3V 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 |
| CAT1832Z-GT3 | 功能描述:監(jiān)控電路 Supervisor,3.3V 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 |
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