參數(shù)資料
型號： PCF8563
廠商： NXP Semiconductors N.V.
英文描述： Real-time clock/calendar(實(shí)時時鐘/日歷)
中文描述： 實(shí)時時鐘/日歷（實(shí)時時鐘/日歷）
文件頁數(shù)： 21/30頁
文件大小： 676K
代理商： PCF8563
Philips Semiconductors
PCF8563
Real-time clock/calendar
Product specification
16 April 1999
21 of 30
9397 750 04855
Philips Electronics N.V. 1999. All rights reserved.
12. Application information
12.1 Quartz crystal frequency adjustment
Method 1: Fixed OSCI capacitor —
By evaluating the average capacitance
necessary for the application layout a fixed capacitor can be used. The frequency is
best measured via the 32.768 kHz signal available after power-on at the CLKOUT
pin. The frequency tolerance depends on the quartz crystal tolerance, the capacitor
tolerance and the device-to-device tolerance (on average
±
5
×
10
6
).
Average deviations of
±
5 minutes per year can be easily achieved.
Method 2: OSCI trimmer —
The oscillator is tuned to the required accuracy by
adjusting a trimmer capacitor on pin OSCI and measuring the 32.768 kHz signal
available after power-on at the CLKOUT pin.
Method 3: OSCO output —
Direct output measurement on pin OSCO (accounting
for test probe capacitance).
Fig 19. Application diagram.
handbook, full pagewidth
MGM665
SCL
SDA
VSS
OSCI
OSCO
CLOCK CALENDAR
PCF8563
SDA
SCL
MASTER
TRANSMITTER/
RECEIVER
VDD
VDD
SDA
(I
2
C-bus)
SCL
R
R
VDD
R: pull-up resistor
tr
Cb
R =
1 F
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCF8563_11 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Real-time clock/calendar
PCF8563BS 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Real-time clock/calendar
PCF8563BS/4 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Real-time clock/calendar
PCF8563BS/4,118 功能描述:實(shí)時時鐘 ULTRA LOW POWER 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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
PCF8563BS/4-T 功能描述:實(shí)時時鐘 ULTRA LOW POWER CLOCK CALENDAR 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(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube
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