PCF2123U SPI Real time clock/calendar
The PCF2123 is a CMOS Real-Time Clock (RTC) and calendar optimized for low power applications. Data is transferred serially via a Serial Peripheral Interface (SPI-bus) with a maximum data rate of 6.25 Mbit/s. An alarm and timer function is also available providing the possibility to generate a wake-up signal on an interrupt pin. An offset register allows fine tuning of the clock
产品特点 Features
- Real time clock provides year, month, day, weekday, hours, minutes, and seconds based on a 32.768 kHz quartz crystal
- Low backup current while running: typical 100 nA at VDD = 2.0 V and Tamb = 25 ℃
- Resolution: seconds to years
- Watchdog functionality
- Freely programmable timer and alarm with interrupt capability
- Clock operating voltage: 1.1 V to 5.5 V
- 3 line SPI-bus with separate, but combinable data input and output
- Serial interface at VDD = 1.8 V to 5.5 V
- 1 second or 1 minute interrupt output
- Integrated oscillator load capacitors for CL = 7 pF
- Internal Power-On Reset (POR)
- Open-drain interrupt and clock output pins
- Programmable offset register for frequency adjustment
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应用
- Time keeping application
- Battery powered devices
- Metering
- High duration timers
- Daily alarms
- Low standby power applications
功能框图
![PCF2123U 功能框图](../download/NXP/images/PCF2123.gif) |
封装
型号 |
订购码 (12NC) |
可订购的器件编号 |
产品状态 |
封装 |
PCF2123U/10AA/1 |
9352 875 42005 |
PCF2123U/10AA/1,00 |
量产 |
|
PCF2123U/12AA/1 |
9352 906 47005 |
PCF2123U/12AA/1,00 |
量产 |
|
PCF2123U/12HA/1 |
9352 929 66005 |
PCF2123U/12HA/1,00 |
量产 |
|
PCF2123U/5GA/1 |
9352 954 29015 |
PCF2123U/5GA/1,015 |
量产 |
|
订货和供应
型号 |
订购码 (12NC) |
可订购的器件编号 |
化学成分 |
PCF2123U/10AA/1 |
9352 875 42005 |
PCF2123U/10AA/1,00 |
PCF2123U/10AA/1 |
PCF2123U/12AA/1 |
9352 906 47005 |
PCF2123U/12AA/1,00 |
PCF2123U/12AA/1 |
PCF2123U/12HA/1 |
9352 929 66005 |
PCF2123U/12HA/1,00 |
PCF2123U/12HA/1 |
PCF2123U/5GA/1 |
9352 954 29015 |
PCF2123U/5GA/1,015 |
PCF2123U/5GA/1 |
PCF2123U 技术支持
档案名称 |
标题 |
类型 |
格式 |
PCF2123U |
SPI Real time clock/calendar |
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 |