音影先锋亚洲天堂网|电影世界尽头的爱完整版播放|国产 熟女 91|高清无码免费观看欧美日韩|韩国一区二区三区黄色录像|美女亚洲加勒比在线|亚洲综合网 开心五月|7x成人在线入口|成人网站免费日韩毛片区|国产黄片?一级?二级?三级

PCF2128T Datasheet

  • PCF2128T

  • Integrated RTC / TCXO / Crystal

  • 324.21KB

  • 10頁

  • PHILIPS

掃碼查看芯片數(shù)據(jù)手冊

上傳產(chǎn)品規(guī)格書

PDF預覽

PCF2128
Integrated RTC / TCXO / Crystal
Rev. 00.03 鈥?4 June 2007
Preliminary [short] data sheet
1. General description
The PCF2128 is a ready to run CMOS real time clock/calendar with an integrated
temperature compensated crystal oscillator (TCXO). In timekeeping applications the high
accuracy of the PCF2128 allows it to be used as a replacement for costly and higher
powered long wave receivers or GPS receivers. A programmable battery switch-over
circuit enables an uninterruptible power supply and consequently continuous timekeeping.
The PCF2128 additionally features 512 bytes of general purpose RAM, a programmable
watchdog, a time stamp facility and a voltage monitoring facility. Programming is possible
using either an SPI or an I
2
C-bus interface.
2. Features
Integration of a 32.768 kHz quartz
crystal in the same package as the RTC
temperature compensated crystal
oscillator (TCXO) with integrated
capacitors.
accuracy:
typically 3 ppm from鈭?0
擄C
to
+70 擄C,
typically 5 ppm from
鈭?0 擄C
to
+85 擄C
provides year, month, day, weekday,
hours, minutes and seconds
programmable alarm function with
interrupt capability
programmable countdown timer with
interrupt capability
programmable watchdog timer with
interrupt and reset capability
timestamp function with interrupt
capability
battery backup input pin and switch-over
circuitry
extra power fail detection with input and
output pins
battery low detection
battery backed output voltage pin
512 bytes of general purpose static
RAM
1 second or 1 minute interrupt output
oscillator stop detection
two line bi-directional 1 MHz fast mode
plus I
2
C interface
timestamp input
power-on reset
3 line SPI interface with separate data
input and output (maximum speed
6.5 Mbits/s)
programmable square wave output pin
I
2
C-bus slave address: read A3H and
write A2H
clock operating voltage: <tbd> to 5.5 V
low backup current; typical 0.95
渭A
at
V
DD
= 3.0 V and T
amb
= 25
擄C
selectable I
2
C and SPI interface

PCF2128T相關型號PDF文件下載

您可能感興趣的PDF文件資料

熱門IC型號推薦

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務：
賣家服務：
技術客服：

0571-85317607

網(wǎng)站技術支持

13606545031

客服在線時間周一至周五
9:00-17:30

關注官方微信號，
第一時間獲取資訊。

建議反饋
返回頂部

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫提出的寶貴意見，您的參與是維庫提升服務的動力！意見一經(jīng)采納，將有感恩紅包奉上哦！