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ISL12020M Scheda tecnica(PDF) 8 Page - Intersil Corporation

Il numero della parte ISL12020M
Spiegazioni elettronici  Providing high-performance solutions for every link in the signal chain
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Produttore elettronici  INTERSIL [Intersil Corporation]
Homepage  http://www.intersil.com/cda/home
Logo INTERSIL - Intersil Corporation

ISL12020M Scheda tecnica(HTML) 8 Page - Intersil Corporation

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Intersil Signal Path Products  2012  www.intersil.com
Block Diagram
High Accuracy Even in Extreme Temperature Conditions
RTC Modules with Embedded Crystal and Temp Comp: ISL12022M
3 in 1 RTC Module
(RTC + Embedded
Crystal + Temp Sensor)
Achieves Better than
+5ppm Accuracy
Key Features
• ±5ppm Accuracy (-40°C to +85°C)
- Factory programmed RTC for optimal accuracy
- Onboard temperature sensor
- Embedded crystal
• Reliable Timekeeping & Power Management
- Backup battery management
- Vdd and battery status monitors and switchover
timestamp
- Battery ResealTM function extends battery shelf
life
• User Programmability
- I2C Interface
- 128 bytes battery-backed user SRAM
• See also
- ISL12020M (DFN 3 in 1); ISL12022 and ISL12023
standalone RTCs
ISL12022M
Crystal
Oscillator
Frequency
Control
Temp
Sensor
Single
Alarm
Compen-
sation
Registers
Brown-out
Alarm
Battery
ReSeal™
µP
I2C
IRQ/FOUT
Clock
Calendar
POR
Switch
VDD
VBAT
±
Battery-
backed
User SRAM
Battery or
Super Cap
2.7V to 5.5V
1.8V to 5.5V
TRIP
V
Power Control
Embedded Crystal
Embedded
Temperature Sensor
-160.0
-140.0
-120.0
-100.0
-80.0
-60.0
-40.0
-20.0
0.0
-40
-20
0
20
40
60
80
100
Temperature (°C)
ISL12022M Compensated
Crystal Drift
Uncompensated Crystal Drift
Better than ±5.0ppm
over -40 to +85°C!
Device
IBAT
(nA)
Alarms
Selectable
Frequency
Output
CPU Supervisory
Function
Battery
IRQ
FOUT
SRAM
Other Functions
Package
POR
Watch-
dog
Timer
Seal
Backup
ISL12020M
1000
1
15
N
N
Y
Y
Shared Pin
128 Bytes • Battery Switchover Time Stamp
• Battery Status Monitor
20 Ld DFN
ISL12022M
1000
1
15
N
N
Y
Y
Shared Pin
128 Bytes • Battery Switchover Time Stamp
• Battery Status Monitor
20 Ld SOIC
ISL12022MA
1000
1
15
N
N
Y
Y
Shared Pin
128 Bytes
• Enhanced Environmental MoistureTolerance
• 100% Pin Compatible with ISL12022M
• Firmware Compatible with ISL12020M and
ISL12022M
Enhanced
20 Ld SOIC
ISL12022M-R5421
1000
1
15
N
N
Y
Y
Shared Pin
128 Bytes
• Enhanced ESD Performance
• 100% Pin Compatible with ISL12022M
• Firmware Compatible with ISL12020M and
ISL12022M
Enhanced
20 Ld SOIC
-5
-4
-3
-2
-1
0
1
2
3
4
5
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
Intersil’s family of Real Time Clock products offer a wide variety of
useful industry-standard functions and features including clocks and
calendars, programmable alarms with event recording, non-volatile
memory for system personality data and unique device IDs, and
power supervision including backup battery and system shutdown
management. The 3-in-1 Module products feature an integrated 32kHz
crystal with onboard temperature sensor, to maintain high accuracy
over the rated temperature range without user calibration.
Target Applications
•Handheld / Portable Devices
•Industrial / Communications /
Specialty
•High Volume Consumer
•Residential / Industrial Power Meter
Real Time Clocks
High-Accuracy RTC Modules


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