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What is ISL12022M?

This electronic component, produced by the manufacturer "Intersil Corporation", performs the same function as "Real Time Clock".


ISL12022M Datasheet PDF - Intersil Corporation

Part Number ISL12022M
Description Real Time Clock
Manufacturers Intersil Corporation 
Logo Intersil Corporation Logo 


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ISL12022M
Real Time Clock with Embedded Crystal, ±5ppm Accuracy
Data Sheet
December 18, 2008
FN6668.4
Low Power RTC with Battery Backed
SRAM, Integrated ±5ppm Temperature
Compensation, and Auto Daylight Saving
The ISL12022M device is a low power real time clock (RTC)
with an embedded temperature sensor and crystal. Device
functions include oscillator compensation, clock/calendar,
power fail and low battery monitors, brownout indicator,
one-time, periodic or polled alarms, intelligent battery
backup switching, Battery Reseal™ function and 128 bytes
of battery-backed user SRAM. The device is offered in a
20 Ld SOIC module that contains the RTC and an
embedded 32.768kHz quartz crystal. The calibrated
oscillator provides less than ±5ppm drift over the full -40°C to
+85°C temperature range.
The RTC tracks time with separate registers for hours,
minutes, and seconds. The calendar registers track date,
month, year and day of the week and are accurate through
2099, with automatic leap year correction.
Daylight Savings time adjustment is done automatically,
using parameters entered by the user. Power fail and battery
monitors offer user-selectable trip levels. The time stamp
function records the time and date of switchover from VDD to
VBAT power, and also from VBAT to VDD power.
Pinout
ISL12022M
(20 LD SOIC)
TOP VIEW
NC
NC
NC
NC
NC
GND
VBAT
GND
NC
NC
1
2
3
4
5
6
7
8
9
10
20 NC
19 NC
18 NC
17 NC
16 NC
15 GND
14 VDD
13 IRQ/FOUT
12 SCL
11 SDA
Features
• Embedded 32.768kHz Quartz Crystal in the Package
• 20 Ld SOIC Package (for DFN version, refer to the
ISL12020M)
• Real Time Clock/Calendar
- Tracks Time in Hours, Minutes and Seconds
- Day of the Week, Day, Month and Year
• On-chip Oscillator Temperature Compensation
- ±5ppm Accuracy Over -40°C to +85°C
• 10-bit Digital Temperature Sensor Output
- ±2°C Accuracy
• Customer Programmable Day Light Saving Time
• 15 Selectable Frequency Outputs
• 1 Alarm
- Settable to the Second, Minute, Hour, Day of the Week,
Day, or Month
- Single Event or Pulse Interrupt Mode
• Automatic Backup to Battery or Supercapacitor
- Operation to VBAT = 1.8V
- 1.0µA Battery Supply Current
• Battery Status Monitor
- 2 User Programmable Levels
- Seven Selectable Voltages for Each Level
• Battery Reseal™ Function to Extend Battery Shelf Life
• Power Status Brownout Monitor
- Six Selectable Trip Levels, from 2.295V to 4.675V
• Oscillator Failure Detection
• Time Stamp for First VDD to VBAT, and Last VBAT to VDD
Switchover
• 128 Bytes Battery-Backed User SRAM
• I2C-Bus™
- 400kHz Clock Frequency
Applications
• Utility Meters
• POS Equipment
• Medical Devices
• Printers and Copiers
• Digital Cameras
• Security Systems
• Vending Machine
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL
or
1-888I2-C46B8u-3s7i7s4a
| Intersil (and design) is a registered
registered trademark owned by NXP
trademark of Intersil Americas Inc.
Semiconductors Netherlands, B.V.
Copyright Intersil Americas Inc. 2008. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.

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ISL12022M equivalent
ISL12022M
I2C Interface Specifications Test Conditions: VDD = +2.7 to +5.5V, Temperature = -40°C to +85°C,
unless otherwise specified. (Continued)
www.DataSheet4U.com
SYMBOL
PARAMETER
TEST CONDITIONS
MIN TYP MAX
(Note 10) (Note 6) (Note 10) UNITS
tSU:STO
tHD:STO
tDH
tR
tF
Cb
STOP Condition Setup Time
From SCL rising edge
crossing 70% of VDD, to SDA
rising edge crossing 30% of
VDD.
600
STOP Condition Hold Time
From SDA rising edge to
SCL falling edge. Both
crossing 70% of VDD.
600
Output Data Hold Time
From SCL falling edge
crossing 30% of VDD, until
SDA enters the 30% to 70%
of VDD window.
0
SDA and SCL Rise Time
From 30% to 70% of VDD. 20 + 0.1 x Cb
SDA and SCL Fall Time
From 70% to 30% of VDD. 20 + 0.1 x Cb
Capacitive Loading of SDA or SCL Total on-chip and off-chip
10
ns
ns
ns
300 ns
300 ns
400 pF
RPU
SDA and SCL Bus Pull-up Resistor
Off-chip
Maximum is determined by
tR and tF.
For Cb = 400pF, max is about
2kΩ~2.5kΩ.
For Cb = 40pF, max is about
15kΩ~20kΩ
1
kΩ
NOTES:
3. Temperature Conversion is inactive below VBAT = 2.7V. Device operation is not guaranteed at VBAT <1.8V.
4. IRQ/FOUT inactive.
5. VDD > VBAT +VBATHYS
6. Specified at +25°C.
7. In order to ensure proper timekeeping, the VDD SR- specification must be followed.
8. Limits should be considered typical and are not production tested.
9. These are I2C specific parameters and are not tested, however, they are used to set conditions for testing devices to validate
specification.
10. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by
characterization and are not production tested.
NOTES
8, 9
8, 9
8, 9
8, 9
5 FN6668.4
December 18, 2008


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On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for ISL12022M electronic component.


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