PCF2127AT Integrated RTC, TCXO and quartz crystal
The PCF2127AT 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 very low power consumption. The PCF2127AT has 512 bytes of general purpose static RAM, a selectable I²C-bus or SPI-bus, a backup battery switch-over circuit, a programmable watchdog function, a timestamp function, and many other features
产品特点 Features
- Temperature Compensated Crystal Oscillator (TCXO) with integrated capacitors
- Typical accuracy: ±3 ppm from -15 °C to +60 °C
- Integration of a 32.768 kHz quartz crystal and oscillator in the same package
- Provides year, month, day, weekday, hours, minutes, seconds, and leap year correction
- 512 bytes of general purpose static RAM
- Timestamp function:
- with interrupt capability
- detection of two different events on one multilevel input pin (for example, for tamper detection)
- Two line bidirectional 400 kHz Fast-mode I²C-bus interface (IOL = 3 mA at pin SDA/CE)
- 3 line SPI-bus with separate data input and output (maximum speed 6.5 Mbit/s)
- Battery backup input pin and switch-over circuitry
- Battery backed output voltage pin
- Battery low detection function
- Extra power fail detection function with input and output pins
- Power-On Reset Override (PORO)
- Oscillator stop detection function
- Interrupt output and system reset pin (open-drain)
- Programmable 1 second or 1 minute interrupt
- Programmable countdown timer with interrupt capability
- Programmable watchdog timer with interrupt and reset capability
- Programmable alarm function with interrupt capability
- Programmable square wave open-drain output pin
- Clock operating voltage: 1.2 V to 4.2 V
- Low supply current: typical 0.65 μA at VDD = 3.0 V and Tamb = 25 °C
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应用
- Electronic metering for electricity, water, and gas
- Precision timekeeping
- Access to accurate time of the day
- GPS equipment to reduce time to first fix
- Applications that require an accurate process timing
- Products with long automated unattended operation time
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封装
| 型号 |
订购码 (12NC) |
可订购的器件编号 |
产品状态 |
封装 |
| PCF2127AT/2 |
9352 998 67518 |
PCF2127AT/2Y |
量产 |
SO20
(SOT163-1) |
订货和供应
| 型号 |
订购码 (12NC) |
可订购的器件编号 |
化学成分 |
| PCF2127AT/2 |
9352 998 67518 |
PCF2127AT/2Y |
PCF2127AT/2 |
PCF2127AT 技术支持
| 档案名称 |
标题 |
类型 |
格式 |
| PCF2127AT |
Integrated RTC, TCXO and quartz crystal |
Data sheet |
pdf |
| AN10853 |
ESD and EMC sensitivity of IC
|
Application note |
pdf |
| UM10301 |
User Manual for NXP Real Time Clocks PCF85x3, PCA8565 and PCF2123, PCA2125
|
User manual |
pdf |
| UM10569 |
Store and transport requirements
|
User manual |
pdf |
| R_10015 |
Chip-On-Glass (COG) - a cost-effective and reliable technology for LCD displays
|
Other type |
pdf |
| UM10204 |
I2C-bus specification and user manual
|
User manual |
pdf |
| UM10206 |
I2C Demonstration Board 2005-1 Quick Start Guide
|
User manual |
pdf |
| UM10569 |
Store and transport requirements
|
User manual |
pdf |
| UM10204_JA |
I2C-bus specification and user manual
|
User manual |
pdf |
