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參數資料
| 型號： | PCA8802CX8/B/1 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 模擬信號調理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PBGA8 |
| 封裝： | 1.19 X 1.14 MM, 0.29 MM HEIGHT, LEAD FREE, WLCSP-8 |
| 文件頁數： | 1/34頁 |
| 文件大小： | 160K |
| 代理商： | PCA8802CX8/B/1 |
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1.
General description
The PCA8802 is a CMOS integrated circuit for battery operation, typically supplied by
button cells or exible polymer batteries. Incorporated is a 32.768 kHz quartz crystal
oscillator circuit including the two load capacitors. The circuit is optimized for a quartz with
6 pF load capacitance specication. Higher values can also be used with the addition of
external load capacitors.
The main function of the oscillator is to generate a 1
32 Hz clock signal which is used to
increment a 24 bit binary counter. The counter can be read over the serial interface and
may also be set to any desired value. Control over the divider chain also allows for
accurate starting of the counter. Incrementing of the counter value during read is
prevented by freezing of the counter during access.
An interrupt signal is also available and is triggered coincident with the counter updating.
This signal may be used as a wake-up for a microcontroller.
2.
Features
I 32.768 kHz quartz oscillator, amplitude regulated with excellent frequency stability and
high immunity to leakage currents
I Very low current consumption: typically 130 nA
I Two wire serial interface (I2C-bus)
I Integrated 24 bit counter with auto increment every 32 seconds
I Interrupt output for processor wake-up
I Stop function for accurate time setting and current saving during shelf life
I User test modes for accelerated application testing and development
I Two integrated quartz crystal oscillator capacitors
3.
Applications
I One time password function generators
I Ultra low power time keeper circuit
PCA8802
Smartcard RTC; ultra low power oscillator with integrated
counter for initiating one time password generation
Rev. 01 — 19 February 2009
Product data sheet
相關PDF資料 |
PDF描述 |
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| PCA8802U/2AA/1 | SPECIALTY ANALOG CIRCUIT, PBGA8 |
| PCF1252-9TD-T | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| PCF1252-4TD-T | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| PCF50603HN | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PQCC48 |
| PCF8591T-T | SPECIALTY ANALOG CIRCUIT, PDSO16 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| PCA8802U | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:ultra low power oscillator with integrated counter for initiating one time password generation |
| PCA8802U/12AA/1,00 | 功能描述:實時時鐘 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| PCA8802U/2AA/1,026 | 功能描述:實時時鐘 ultra LOW POWER OSC Smartcard RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| PCA8802UG/12KB/1,0 | 制造商:NXP Semiconductors 功能描述:PCA8802UG/UNCASED/FOIL//12KB/1 - Gel-pak, waffle pack, wafer, diced wafer on film 制造商:NXP Semiconductors 功能描述:IC SMARTCARD RTC ULP OSC 8WLCSP |
| PCA887A/CW/DP1S | 制造商:Rochester Electronics LLC 功能描述: 制造商:Zarlink Semiconductor Inc 功能描述: 制造商:ZARLINK 功能描述: |
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