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參數(shù)資料
| 型號： | X40431 |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Dual Voltage Monitor with Intergrated CPU Supervisor |
| 中文描述： | 雙電壓監(jiān)視器集成CPU監(jiān)控 |
| 文件頁數(shù)： | 4/26頁 |
| 文件大?。?/td> | 142K |
| 代理商： | X40431 |
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X40430/X40431/X40434/X40435 – Preliminary
Characteristics subject to change without notice.
4 of 26
REV 1.3.16 7/13/02
www.xicor.com
Low Voltage V
During operation, the X40430/31/34/35 monitors the
V
CC
level and asserts RESET/RESET if supply voltage
falls below a preset minimum V
RESET signal prevents the microprocessor from oper-
ating in a power fail or brownout condition. The
RESET/RESET signal remains active until the voltage
drops below 1V. It also remains active until V
and exceeds V
TRIP1
for
t
PURST
CC
(V1 Monitoring)
TRIP1
. The RESET/
CC
returns
.
Low Voltage V2 Monitoring
The X40430 also monitors a second voltage level and
asserts V2FAIL if the voltage falls below a preset mini-
mum V
TRIP2
. The V2FAIL signal is either ORed with
RESET to prevent the microprocessor from operating
in a power fail or brownout condition or used to inter-
rupt the microprocessor with notification of an impend-
ing power failure.
For the X40430 and X40431 the V2FAIL signal remains
active until the V2MON drops below 1V (V2MON
fall-
ing). It also remains active until V2MON returns and
exceeds V
TRIP2
. This voltage sense circuitry monitors
the power supply connected to V2MON pin. If V
V2MON can still be monitored.
CC
= 0,
For the X40434 and X40435, the V2FAIL signal
remains active until V
CC
drops below 1V and remains
active until V2MON returns and exceeds V
sense circuitry is powered by V
cannot be monitored.
TRIP2
=0, V2MON
. This
CC
. If V
CC
Low Voltage V3 Monitoring
The X40430/31/34/35 also monitors a third voltage
level and asserts V3FAIL if the voltage falls below a
preset minimum V
TRIP3
. The V3FAIL signal is either
ORed with RESET to prevent the microprocessor from
operating in a power fail or brownout condition or used
to interrupt the microprocessor with notification of an
impending power failure. The V3FAIL signal remains
active until the V3MON drops below 1V (V3MON fall-
ing). It also remains active until V3MON returns and
exceeds V
.
This voltage sense circuitry monitors the power supply
connected to V3MON pin. If V
be monitored.
CC
= 0, V3MON can still
Early Low V
This CMOS output goes LOW earlier than RESET/
RESET whenever V
CC
falls below the V
TRIP1
voltage
and returns high when V
CC
exceeds the V
TRIP1
volt-
age. There is no power up delay circuitry (t
PURST
) on
this pin.
CC
Detection (LOWLINE)
Figure 2. Two Uses of Multiple Voltage Monitoring
6-10V
V
CC
5V
V3MON
(1.7V)
X40431-A
Unreg.
Supply
V
CC
X40431-B
RESET
V2FAIL
System
Reset
V
CC
V2FAIL
V3FAIL
System
Reset
Notice:
No external components required to monitor three voltages.
1M
V3MON
V3FAIL
V2MON
5V
Reg
3.0V
Reg
1.8V
Reg
3.3V
390K
V2MON
RESET
Power
Fail
Interrupt
V
CC
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| X40431S14-AT1 | 功能描述:IC VOLT MON TRPL EEPROM 14-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:100 系列:- 類型:簡單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:- 復(fù)位:低有效 復(fù)位超時:最小為 100 ms 電壓 - 閥值:4.38V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:8-TSSOP 包裝:管件 |
| X40431S14-B | 功能描述:IC VOLT MON TRPL EEPROM 14-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 監(jiān)控器 系列:- 標(biāo)準(zhǔn)包裝:100 系列:- 類型:簡單復(fù)位/加電復(fù)位 監(jiān)視電壓數(shù)目:1 輸出:- 復(fù)位:低有效 復(fù)位超時:最小為 100 ms 電壓 - 閥值:4.38V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:8-TSSOP 包裝:管件 |
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