Device Information
 
 
X40020 Printer Friendly Version
 
Dual Voltage Monitor with Integrated CPU Supervisor and System Battery Switch
 
Datasheets,
Related Docs
& Simulations		DescriptionKey
Features		Parametric
Data		Related
Devices
 
 
Ordering Information
 iBuy direct from Intersil  iBuy direct - out of stock  Request samples
 Check distributor inventory Green/Pb(Lead free) Device  Available in RoHS/Pb-Free  
Part No. Design-In
Status		 Temp. Package MSL Price
US $		 PB Free
X40020S14IZ-A Active Ind 14 Ld SOIC 3 1.99 PB Free Disti-Buy  
X40020S14IZ-AT1 Active Ind 14 Ld SOIC T+R 3 1.99 PB Free Disti-Buy  
X40020S14IZ-B Active Ind 14 Ld SOIC 3 1.99 PB Free Disti-Buy  
X40020S14IZ-BT1 Active Ind 14 Ld SOIC T+R 3 1.99 PB Free Disti-Buy  
X40020S14Z-A Active Comm 14 Ld SOIC 3 1.89 PB Free Disti-Buy  
X40020S14Z-AT1 Active Comm 14 Ld SOIC T+R 3 1.89 PB Free Disti-Buy  
X40020S14Z-B Active Comm 14 Ld SOIC 3 1.89 PB Free Disti-Buy  
X40020S14Z-BT1 Active Comm 14 Ld SOIC T+R 3 1.89 PB Free Disti-Buy  
X40020S14-A InActive Comm 14 Ld SOIC 1 N/A      
X40020S14-AT1 InActive Comm 14 Ld SOIC T+R 1 N/A      
X40020S14-B InActive Comm 14 Ld SOIC 1 N/A      
X40020S14-BT1 InActive Comm 14 Ld SOIC T+R 1 N/A      
X40020S14-C InActive Comm 14 Ld SOIC 1 N/A      
X40020S14-CT1 InActive Comm 14 Ld SOIC T+R 1 N/A      
X40020S14I-A InActive Ind 14 Ld SOIC 1 N/A      
X40020S14I-AT1 InActive Ind 14 Ld SOIC T+R 1 N/A      
X40020S14I-B InActive Ind 14 Ld SOIC 1 N/A      
X40020S14I-BT1 InActive Ind 14 Ld SOIC T+R 1 N/A      
X40020S14I-C InActive Ind 14 Ld SOIC 1 N/A      
X40020S14I-CT1 InActive Ind 14 Ld SOIC T+R 1 N/A      
X40020V14-A InActive Comm 14 Ld TSSOP 1 N/A      
X40020V14-AT1 InActive Comm 14 Ld TSSOP T+R 1 N/A      
X40020V14-B InActive Comm 14 Ld TSSOP 1 N/A      
X40020V14-BT1 InActive Comm 14 Ld TSSOP T+R 1 N/A      
X40020V14-C InActive Comm 14 Ld TSSOP 1 N/A      
X40020V14-CT1 InActive Comm 14 Ld TSSOP T+R 1 N/A      
X40020V14I-A InActive Ind 14 Ld TSSOP 1 N/A      
X40020V14I-AT1 InActive Ind 14 Ld TSSOP T+R 1 N/A      
X40020V14I-B InActive Ind 14 Ld TSSOP 1 N/A      
X40020V14I-BT1 InActive Ind 14 Ld TSSOP T+R 1 N/A      
X40020V14I-C InActive Ind 14 Ld TSSOP 1 N/A      
X40020V14I-CT1 InActive Ind 14 Ld TSSOP T+R 1 N/A      
The price listed is the manufacturer's suggested retail price for quantities of 1K units. However, prices in today's market are fluid and may change without notice.
MSL = Moisture Sensitivity Level - per IPC/JEDEC J-STD-020
SMD = Standard Microcircuit Drawing
 
  Description

The X40020 combines power-on reset control, watchdog timer, supply voltage supervision, and secondary supervision, and manual reset, in one package. This combination lowers system cost, reduces board space requirements, and increases reliability.

Applying voltage to VCC activates the power-on reset circuit which holds RESET/RESET active for a period of time. This allows the power supply and system oscillator to stabilize before the processor can execute code.

 
  Key Features
 
  • Dual voltage detection and reset assertion
    • Three standard reset threshold settings (4.6V/2.9V, 4.6V/2.6V, 2.9V/1.6V)
    • VTRIP2 programmable down to 0.9V
    • Adjust low voltage reset threshold voltages using special programming sequence
    • Reset signal valid to VCC = 1V
    • Monitor two voltages or detect power fail
  • Battery switch backup
  • VOUT: 5mA to 50mA from VCC, 250μA from VBATT
  • Fault detection register
  • Selectable power-on reset timeout (0.05s, 0.2s, 0.4s, 0.8s)
  • Selectable watchdog timer interval (25ms, 200ms, 1.4s, off)
  • Debounced manual reset input
  • Low power CMOS
    • 25μA typical standby current, watchdog on
    • 6μA typical standby current, watchdog off
    • 1μA battery current in backup mode
  • 400kHz 2-wire interface
  • 2.7V to 5.5V power supply operation
  • Available packages
    • 14-lead SOIC, TSSOP
  • Monitor voltages: 5V to 1.6V
  • Memory security
  • Pb-free plus anneal available (RoHS compliant)
Related Documentation
 
Datasheet(s)   Datasheet(s):
 
  Parametric Data
# of Voltage Monitors2
VS Range (V)2.7 to 5.5
2.7 to 5.5
2.7 to 3.6
Voltage Threshold 14.6 (1%)
4.6 (1%)
2.9 (1.7%)
Voltage Threshold 22.9 (1.7%)
2.6 (2%)
1.6 (3%)
Reset Output TypeActive High
Watchdog Timer (s)OFF, 0.025, 0.2, 1.4
Manual ResetY
Bus InterfaceI2C
EEPROM Size (kbits)0
Battery Montor and SwitchoverY
Fault Detection RegisterY
Suffix-A
-B
-C
POR (ms)50, 200, 400, 800
RTC FunctionN
FeaturesBattery Switch, WDO Out
 
 
Applications
 
  • Communications equipment
    • Routers, hubs, switches
    • Disk arrays
  • Industrial systems
    • Process control
    • Intelligent instrumentation
  • Computer systems
    • Desktop computers
    • Network servers
 
  Related DevicesParametric Table   Parametric Table
 
 X40415 Dual Voltage Monitor with Integrated CPU Supervisor 
 X40420 Dual Voltage Monitor with Integrated CPU Supervisor and System Battery Switch 
 X40421 Dual Voltage Monitor with Integrated CPU Supervisor and System Battery Switch 

 
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