廬
X80140, X80141, X80142, X80143, X80144
Data Sheet
January 20, 2005
FN8153.0
PRELIMINARY
Voltage Supervisor/Sequencer
Quad Programmable Time Delay with
Local/Remote Voltage Monitors
The X80140 is a voltage supervisor/sequencer with four built
in voltage monitors. This allows the designer to monitor up to
four voltages and sequence up to five events.
Low voltage detection circuitry protects the system from
power supply failure or 鈥渂rown out鈥?conditions, resetting the
system and resequencing the voltages when any of the
monitored inputs fall below the minimum threshold level. The
RESET pin is active until all monitored voltages reach proper
operating levels and stabilize for a selectable period of time.
Five common low voltage combinations are available,
however, Intersil鈥檚 unique circuits allow the any voltage
monitor threshold to be reprogrammed for special needs or
for applications requiring higher precision.
A manual reset input provides debounce circuitry for
minimum reset component count. Activating the manual
reset both controls the RESET output and resequences the
supplies through control of the ViGDO pins.
The X80140 has 2kb of EEPROM for system configuration,
manufacturing or maintenance information. This memory is
protected to prevent inadvertent changes to the contents.
Features
鈥?Quad Voltage Monitor and Sequencing
- Four independent voltage monitors
- Four time delay circuits (in circuit programmable)
- Remote delay via SMBus
- Factory programmable voltage thresholds
- Sequence up to 5 power supplies.
鈥?Fault Detection Register
- Remote diagnostics of voltage fail event.
鈥?Debounced Manual Reset Input
鈥?Manufacturing/Configuration Memory
- 2Kbits of EEPROM
- 400kHz SMBus interface
鈥?Available Packages
- 20-lead Quad No-Lead Frame (QFN - 5x5mm)
Applications
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General Purpose Timers
Long Time Delay Generation
Cycle Timers / Waveform Generation
ON/OFF Delay Timers
Supply Sequencing for Distributed Power
Programmable Delay Event Sequencing
Multiple DC-DC ON/OFF Sequencing
Voltage Window Monitoring with Reset
ON/OFF Switches with Programmable Delay
Voltage Supervisor with Programmable Output Delays
Databus Power Sequencing
100 ms to 5 secs Selectable Delay Switches
ATE or Data Acquisition Timing Applications
Datapath/Memory Timing Applications
Data Pipeline Timing Applications
Batch Timer/Sequencers
Adjustable Duty Cycle Applications
Pinout
5X5 QFN
TOP VIEW
V
CC
V
SS
NC
A0
MR
15
14
(5mm x 5mm)
13
12
11
6
7
8
9 10
A1
20 19 18 17 16
V4GDO
V4MON
V3GDO
V3MON
V2GDO
1
2
3
4
5
WP
RESET
V1GDO
V1MON
SCL
V2MON
DNC
SDA
V
P
Ordering Information
PART
NUMBER
X80140Q20I
X80141Q20I
X80142Q20I
X80143Q20I
X80144Q20I
V
REF1
4.5
4.5
3.0
3.0
2.25
V
REF2
3.0
2.25
2.25
2.25
2.25
V
REF3
2.25
0.9
1.7
0.9
0.9
V
REF4
0.9
0.9
0.9
0.9
0.9
PACKAGE
QFN
QFN
QFN
QFN
QFN
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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