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PDF SP804SCP Data sheet ( Hoja de datos )
| Número de pieza | SP804SCP | |
| Descripción | 3.0V/3.3V Low Power Microprocessor Supervisory with Battery Switch-Over | |
| Fabricantes | Sipex | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SP804SCP (archivo pdf) en la parte inferior de esta página. Total 20 Páginas | ||
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® SP690T/S/R, SP802T/S/R,
SP804T/S/R, and SP805T/S/R
3.0V/3.3V Low Power Microprocessor
Supervisory with Battery Switch-Over
s RESET and RESET Outputs
s Reset asserted down to VCC = 1V
s Reset Time Delay - 200ms
s Watchdog Timer - 1.6 sec timeout
s 40µA Maximum VCC Supply Current
s 1µA Maximum Battery Supply Current
s Power Switching
50mA Output in VCC Mode (1.5Ω)
10mA Output in Battery Mode (15Ω)
s Battery Can Exceed VCC in Normal Operation
s Precision Voltage Monitor for Power-Fail
or Low-Battery Warning
s Available in 8 pin SO and DIP packages
s Pin Compatible Upgrades to
MAX690T/S/R, MAX802T/S/R,
MAX804T/S/R, MAX805T/S/R
DESCRIPTION
The SP690T/S/R, SP802T/S/R, SP804T/S/R and SP805T/S/R devices are a family of
microprocessor (µP) supervisory circuits that integrate a myriad of components involved in
discrete solutions to monitor power-supply and battery-control functions in µP and digital
systems. The series will significantly improve system reliability and operational efficiency
when compared to discrete solutions. The features of the SP690T/S/R, SP802T/S/R,
SP804T/S/R and SP805T/S/R devices include a watchdog timer, a µP reset and backup-
battery switchover, and power-failure warning; a complete µP monitoring and watchdog
solution. The series is ideal for 3.0V or 3.3V applications in portable electronics, computers,
controllers, and intelligent instruments and is a solid match for designs where it is critical to
monitor the power supply to the µP and it’s related digital components. Refer to Sipex's
SP690A/692A/802L/802M/805L/805M series for similar devices designed for +5V systems.
Part Number
SP690T/805T
SP802T/804T
SP690S/805S
SP802S/804S
SP690R/805R
SP802R/804R
RESET
Active
LOW/HIGH
LOW/HIGH
LOW/HIGH
LOW/HIGH
LOW/HIGH
LOW/HIGH
RESET
Threshold
3.075V
3.075V
2.925V
2.925V
2.625V
2.625V
RESET
Accuracy
±75mV
±60mV
±75mV
±60mV
±75mV
±60mV
PFI
Accuracy
±4%
±2%
±4%
±2%
±4%
±2%
Watchdog
Input
YES
YES
YES
YES
YES
YES
Backup-Battery
Switch
YES
YES
YES
YES
YES
YES
SP690T/S/R DS/10 SP690T/S/R, 802/T/S/R, 804T/S/R, 805T/S/R Low Power Microprocessor Supervisory
1
© Copyright 2000 Sipex Corporation
1 page  
INTERNAL BLOCK DIAGRAM
VBATT 8
VCC
2
BATTERY
SWITCHOVER
CIRCUIT
VOUT
1
WDI 6
PFI
4
BATTERY
SWITCHOVER
COMPARATOR
1.25V
RESET
COMPARATOR
1.25V
SP690T/S/R
SP802T/S/R
SP804T/S/R
SP805T/S/R
RESET
GENERATOR
RESET / RESET*
7
WATCHDOG
TIMER
POWER-FAIL
COMPARATOR
1.25V
PFO
5
GND 3
*SP804T/S/R and SP805T/S/R only
SP690T/S/R DS/10 SP690T/S/R, 802/T/S/R, 804T/S/R, 805T/S/R Low Power Microprocessor Supervisory
5
© Copyright 2000 Sipex Corporation
5 Page 
VCC
3.0V or 3.3V
0V
VRST
VSW
3.0V or 3.3V
VOUT
0V
VSW
VBATTERY=3.6V
3.0V or 3.3V
RESET
0V
tWP
3.0V or 3.3V
RESET*
0V
3.0V or 3.3V
PFO
0V
VBATTERY=PFI=3.6V
IOUT=0mA
*SP804T/S/R and SP805T/S/R only; Reset externally pulled up to VCC.
Figure 19. Timing Diagram
SP690T/S/R DS/10 SP690T/S/R, 802/T/S/R, 804T/S/R, 805T/S/R Low Power Microprocessor Supervisory
11
© Copyright 2000 Sipex Corporation
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet SP804SCP.PDF ] | |
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