X40030S14Z-AT1 Intersil, X40030S14Z-AT1 Datasheet - Page 7

• Manufacturer Part Number: X40030S14Z-AT1
• Description: IC VOLTAGE MONITOR TRPL 14-SOIC
• Manufacturer: Intersil
• Type: Multi-Voltage Supervisorr

Specifications of X40030S14Z-AT1

• Number Of Voltages Monitored: 3
• Output: Push-Pull, Totem Pole
• Reset: Active High
• Reset Timeout: Adjustable/Selectable
• Voltage - Threshold: 1.8V, 2.9V, 4.6V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Principles of Operation
Power-on Reset
Applying power to the X40030, X40031, X40034, X40035
activates a Power-on Reset Circuit that pulls the
RESET/RESET pins active. This signal provides several
benefits.
• It prevents the system microprocessor from starting to
• It prevents the processor from operating prior to
• It allows time for an FPGA to download its configuration
• It prevents communication to the EEPROM, greatly reducing
When V
t
X40035) and RESET (X40030, X40034) pin allowing the
system to begin operation.
Manual Reset
By connecting a push-button directly from MR to ground, the
designer adds manual system reset capability. The MR pin is
LOW while the push-button is closed and RESET/RESET
pin remains HIGH/LOW until the push-button is released and
for t
Low Voltage V
During operation, the X40030, X40031, X40034, X40035
monitors the V
supply voltage falls below a preset minimum V
RESET signal prevents the microprocessor from operating 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
t
Low Voltage V2 Monitoring
The X40030 also monitors a second voltage level and
asserts V2FAIL if the voltage falls below a preset minimum
V
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.
PURST
PURST
FIGURE 1. CONNECTING A MANUAL RESET PUSH-BUTTON
TRIP2
operate with insufficient voltage.
stabilization of the oscillator.
prior to initialization of the circuit.
the likelihood of data corruption on power-up.
PURST
SYSTEM
RESET
.
. The V2FAIL signal is either ORed with RESET to
(selectable), the circuit releases the RESET (X40031,
CC
thereafter.
exceeds the device V
CC
CC
level and asserts RESET/RESET if the
X40030, X40034
RESET
(V1 Monitoring)
CC
returns and exceeds V
MR
7
TRIP1
threshold value for
V
CC
X40030, X40031, X40034, X40035
TRIP1
TRIP1
MANUAL
RESET
. The
for
For the X40030 and X40031 the V2FAIL signal remains
active until the V2MON drops below 1V (V2MON falling). It
also remains active until V2MON returns and exceeds
V
supply connected to V2MON pin. If V
be monitored.
For the X40034 and X40035, the V2FAIL signal remains
active until V
V2MON returns and exceeds V
powered by V
Low Voltage V3 Monitoring
The X40030, X40031, X40034, X40035 also monitors a third
voltage level and asserts V3FAIL if the voltage falls below a
preset minimum V
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 falling). It also remains active until
V3MON returns and exceeds V
This voltage sense circuitry monitors the power supply
connected to V3MON pin. If V
monitored.
Early Low V
This CMOS output goes LOW earlier than RESET/RESET
whenever V
high when V
power-up delay circuitry (t
6V TO 10V
NOTICE: NO EXTERNAL COMPONENTS REQUIRED TO MONITOR
THREE VOLTAGES.
FIGURE 2. TWO USES OF MULTIPLE VOLTAGE MONITORING
SUPPLY
UNREG.
TRIP2
1M
.This voltage sense circuitry monitors the power
390k
CC
CC
CC
CC
CC
REG
REG
1.8V
REG
3.0V
falls below the V
5V
exceeds the V
drops below 1V and remains active until
. If V
Detection (LOWLINE)
TRIP3
3.3V
5V
CC
. The V3FAIL signal is either ORed
= 0, V2MON cannot be monitored.
V
V2MON
V3MON
V
V2MON
V3MON
(1.7V)
CC
PURST
CC
X40031-B
X40031-A
CC
TRIP1
TRIP2
TRIP3
TRIP1
V2FAIL
V3FAIL
) on this pin.
RESET
= 0, V3MON can still be
RESET
V2FAIL
V3FAIL
voltage. There is no
.This sense circuitry is
.
CC
voltage and returns
= 0, V2MON can still
V
CC
V
CC
August 25, 2008
POWER
FAIL
INTERRUPT
SYSTEM
RESET
SYSTEM
RESET
FN8114.2