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...
概要
説明
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.
特長
- 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
製品比較
アプリケーション
- Utility meters
- POS equipment
- Printers and copiers
- Digital cameras
ドキュメント
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| 分類 | タイトル | 日時 |
| データシート | PDF 1.49 MB | |
| カタログ | PDF 5.67 MB 英語 | |
| 製品変更通知 | PDF 74 KB | |
| アプリケーションノート | PDF 303 KB | |
| 製品変更通知 | PDF 117 KB | |
| マニュアル－開発ツール | PDF 815 KB | |
| アプリケーションノート | PDF 302 KB | |
| アプリケーションノート | PDF 377 KB | |
| アプリケーションノート | PDF 392 KB | |
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設計・開発
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バッテリバックアップSRAMおよび温度補償開発ボードを備えた低消費電力RTC
QCIOT-RTC22MPOCZボードは、温度センサと32.768kHzの水晶振動子を内蔵した低電力 ISL12022M リアルタイムクロック(RTC)デバイスを備えています。 電源障害時のバッテリバックアップへの内蔵の自動切換えは、わずか1.6μAの消費電流でバッテリ寿命を延ばし、128バイトのSRAM、発振器...
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