ISL120x Real Time Clock USB Evaluation System
This evaluation system is a hardware and software platform for testing Renesas real-time clock (RTC) devices; the system requires only a PC for the controller and power...
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Overview
Description
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 backup battery current draw is less than 1.6µA over the temperature range. 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 the switchover from VDD to VBAT power, and also from VBAT to VDD power.
Features
- Embedded 32.768kHz quartz crystal in the package
- 20 Ld SOIC package (for the DFN version, see the ISL12020M)
- Calendar
- On-chip oscillator temperature compensation
- 10-bit digital temperature sensor output
- 15 selectable frequency outputs
- Interrupt for alarm or 15 selectable frequency outputs
- Automatic backup to battery or supercapacitor
- VDD and battery status monitors
- Battery Reseal function to extend battery shelf life
- Power status brownout monitor
- Time stamp for battery switchover
- 128 bytes battery-backed user SRAM
- 1.6μA maximum battery current
- I2C Bus
- RoHS compliant
Comparison
Applications
- Utility meters
- POS equipment
- Printers and copiers
- Digital cameras
Documentation
Featured Documentation
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| Type | Title | Date |
| Datasheet | PDF 1.49 MB | |
| Brochure | PDF 5.41 MB 日本語 | |
| Product Change Notice | PDF 74 KB | |
| Application Note | PDF 303 KB | |
| Product Change Notice | PDF 117 KB | |
| Manual - Development Tools | PDF 815 KB | |
| Application Note | PDF 302 KB | |
| Application Note | PDF 377 KB | |
| Application Note | PDF 392 KB | |
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Design & Development
Software & Tools
Boards & Kits
Low Power RTC with Battery Backed SRAM and Temperature Compensation Development Board
The QCIOT-RTC22MPOCZ board features the low-power ISL12022M Real-Time Clock (RTC) devices with an embedded temperature sensor and 32.768kHz quartz crystal. The built-in...
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Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.
Processing table
ISL12022MIBZ Active Samples Available
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|
SOICW | Tube | 1 | Get Samples, | |
ISL12022MIBZ-T Active Samples Available
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|
SOICW | Reel | 1 | 3.92 | Get Samples, |
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