Accurate RTC with Battery Backup
デザイン・ファイル
完全な内訳を受け取ります。 製品の設置面積などについては、 eCad ファイル.
Nano-Power Highly Accurate RTC with Integrated Quartz Crystal
The PCF2131 is a CMOS real time clock (RTC) and calendar with an integrated temperature compensated crystal (Xtal) oscillator (TCXO) and a 32.768 kHz quartz crystal optimized for very high accuracy and ultra-low power consumption. The PCF2131 features:
- Selectable I²C-bus or SPI-bus interfaces for full flexibility when selecting the associated MCU/MPU
- Backup battery input and switch-over circuit, allowing the RTC to keep track of the time, even when the main power supply is removed
- Calendar capabilities to keep tracking of the time from years down to 1/100 seconds
- Up to 4 timestamp registers, which can be associated to timestamp input in order to register tampering events
- Up to 2 interrupt outputs to enable/disable systems to reduce the overall current consumption
製品詳細
Features
Nano-Power Device
- Clock operating voltage from 1.2 V to 5.5 V
- Supply current of 64 nA @ VDD = 3.3 V (typical)
Highly Accurate Real Timing
- ±3 ppm from -40 °C to +85 °C (typical)
- ±8 ppm from -40 °C to +85 °C (worst)
Integrated Quartz Crystal and Oscillator
- 32.768 kHz quartz crystal
- Temperature compensated crystal oscillator (TCXO)
Battery Back Up Supported
- Battery backup input pin and switch-over circuitry
- Battery backed output voltage
- Battery low detection function
Timestamp and Interrupt Functionality
- 4x Time stamp inputs with independent registers
- 2x Interrupt pin with selectable interrupt source
Multiple Interfaces Supported
- I²C-bus support (400 kHz fast-mode)
- SPI-bus (maximum speed 6.5 Mbit/s)
Calendar Capabilities
- Provide year, month, day, weekday, hours, minutes, seconds and 1/100 seconds
- Leap year correction
Product Longevity Program
- This product is included in the NXP Product Longevity Program ensuring a stable supply of products for your embedded designs. The PCF2131TF is included in the 10-year program.
関連製品
Accurate RTC with 512 B RAM and Battery Backup
購入/パラメータ
|
|
|
|
|
|
|
|---|---|---|---|---|---|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ドキュメント
クイック・リファレンス ドキュメンテーションの種類.
設計・リソース
ハードウェア
クイック・リファレンス
ボードタイプ.
ソフトウェア
クイック・リファレンス ソフトウェア・タイプ.
2 ソフトウェア・ファイル
-
BSPとデバイスドライバ
PCF2131 Real-Time Clock Driver with Demo App (SDK)
-
BSPとデバイスドライバ
PCF2131 Real-Time Clock - Application Code Hub
注: より快適にご利用いただくために、ソフトウェアのダウンロードはデスクトップで行うことを推奨します。