參數(shù)資料
型號(hào)： X55060
廠商： Intersil Corporation
英文描述： Dual Voltage Monitor with Integrated System Battery Switch and EEPROM
中文描述： 雙電壓監(jiān)控集成系統(tǒng)電池開關(guān)和EEPROM
文件頁(yè)數(shù)： 1/23頁(yè)
文件大?。?/td> 375K
代理商： X55060
1
FN8133.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-352-6832
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.
PRELIMINARY
X55060
64K
Dual Voltage Monitor with Integrated
System Battery Switch and EEPROM
FEATURES
Dual voltage monitoring
Active high and active low reset outputs
Four standard reset threshold voltages
(4.6/2.9, 4.6/2.6, 2.9/1.6, 2.6/1.6)
—User programmable thresholds
Lowline Output — Zero delayed POR
Reset signal valid to V
CC
= 1V
System battery switch-over circuitry
Long battery life with low power consumption
—<50μA max standby current, watchdog on
—<30μA max standby current, watchdog off
Selectable watchdog timer
—(0.15s, 0.4s, 0.8s, off)
64Kbits of EEPROM
Built-in inadvertent write protection
—Power-up/power-down protection circuitry
—Protect none(0), or all of EEPROM array with
programmable Block Lock
protection
—In circuit programmable ROM mode
Minimize EEPROM programming time
—64 byte page write mode
—Self-timed write cycle
—5ms write cycle time (typical)
10MHz SPI interface modes (0,0 & 1,1)
2.7V to 5.5V power supply operation
Available packages — 20-lead TSSOP
DESCRIPTION
This device combines power-on reset control, battery
switch circuit, watchdog timer, supply voltage supervi-
sion, secondary voltage supervision, block lock
protect
and serial EEPROM in one package. This combination
lowers system cost, reduces board space require-
ments, and increases reliability.
Applying power to the device activates the power-on
reset circuit which holds RESET/RESET active for a
period of time. This allows the power supply and oscilla-
tor to stabilize before the processor can execute code.
BLOCK DIAGRAM
Watchdog
Timer Reset
Data
Register
Command
Decode, Test
& Control
Logic
SI
SO
SCK
CS
V
CC
Reset &
Watchdog
Timebase
Power-on,
Low Voltage
Generation
V
CC
Monitor
Logic
+
V
TRIP1
-
RESET
Reset
Status
Register
Protect Logic
EEPROM Array
Watchdog Transition
Detector
WP
512 X 128
X
VLogic
+
V
TRIP2
-
System
Battery
Switch
RESET/MR
LOWLINE
V2FAIL
V2MON
V
BATT
V
OUT
(V1MON)
WDO
BATT-ON
V
OUT
V
OUT
Data Sheet
March 28, 2005
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