ISL12022M-R5421 INTERSIL [Intersil Corporation], ISL12022M-R5421 Datasheet - Page 8

• Manufacturer Part Number: ISL12022M-R5421
• Description: Providing high-performance solutions for every link in the signal chain
• Manufacturer: INTERSIL [Intersil Corporation]

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Intersil Signal Path Products  2012  www.intersil.com
Real Time Clocks
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.
►
ISL12020M
ISL12022M
ISL12022MA
ISL12022M-R5421
High-Accuracy RTC Modules
Device
3 in 1 RTC Module
(RTC + Embedded
Crystal + Temp Sensor)
Achieves Better than
+5ppm Accuracy
Key Features
• ±5ppm Accuracy (-40°C to +85°C)
• Reliable Timekeeping & Power Management
• User Programmability
• See also
- Factory programmed RTC for optimal accuracy
- Onboard temperature sensor
- Embedded crystal
- Backup battery management
- Vdd and battery status monitors and switchover
- Battery Reseal
- I
- 128 bytes battery-backed user SRAM
- ISL12020M (DFN 3 in 1); ISL12022 and ISL12023
timestamp
life
standalone RTCs
2
C Interface
1000
1000
1000
1000
(nA)
I
BAT
Alarms
TM
1
1
1
1
function extends battery shelf
Frequency
Selectable
Output
15
15
15
15
CPU Supervisory
POR
N
N
N
N
Function
Watch-
Timer
dog
N
N
N
N
Seal
RTC Modules with Embedded Crystal and Temp Comp: ISL12022M
Y
Y
Y
Y
Battery
Backup
Super Cap
Battery or
-100.0
-120.0
-140.0
-160.0
Block Diagram
2.7V to 5.5V
1.8V to 5.5V
High Accuracy Even in Extreme Temperature Conditions
-20.0
-40.0
-60.0
-80.0
Embedded Crystal
Y
Y
Y
Y
0.0
-40
V
IRQ
V
BAT
-20
Shared Pin
Shared Pin
Shared Pin
Shared Pin
DD
ISL12022M Compensated
Crystal Drift
Uncompensated Crystal Drift
ISL12022M
0
F
Temperature (°C)
OUT
20
V
TRIP
±
128 Bytes • Battery Switchover Time Stamp
128 Bytes • Battery Switchover Time Stamp
128 Bytes
128 Bytes
Oscillator
Crystal
SRAM
40
Power Control
60
POR
Target Applications
• Handheld / Portable Devices
• Industrial / Communications /
• High Volume Consumer
• Residential / Industrial Power Meter
• Battery Status Monitor
• Battery Status Monitor
• Enhanced Environmental MoistureTolerance
• 100% Pin Compatible with ISL12022M
• Firmware Compatible with ISL12020M and
ISL12022M
• Enhanced ESD Performance
• 100% Pin Compatible with ISL12022M
• Firmware Compatible with ISL12020M and
ISL12022M
80
Frequency
Specialty
Control
Switch
100
Brown-out
Registers
ReSeal™
Compen-
Other Functions
Sensor
Battery
sation
Single
Alarm
Alarm
Temp
-1
-2
-3
-4
-5
5
4
3
2
1
0
-40
Better than ±5.0ppm
-20
over -40 to +85°C!
User SRAM
Embedded
Temperature Sensor
Battery-
backed
Calendar
Clock
0
TEMPERATURE (°C)
20
IRQ/F
40
I
2
C
OUT
60
20 Ld DFN
20 Ld SOIC
Enhanced
20 Ld SOIC
Enhanced
20 Ld SOIC
Package
µP
80