參數(shù)資料
型號： PCF8593
廠商： NXP SEMICONDUCTORS
元件分類： XO, clock
英文描述： Low power clock/calendar(低功耗時鐘/日歷)
中文描述： REAL TIME CLOCK
文件頁數(shù)： 23/28頁
文件大?。?/td> 197K
代理商： PCF8593
1997 Mar 25
23
Philips Semiconductors
Product specification
Low power clock/calendar
PCF8593
14 APPLICATION INFORMATION
14.1
Quartz frequency adjustment
14.1.1
M
ETHOD
1: F
IXED
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 1 Hz signal which can
be programmed to occur at the interrupt output (pin 7). 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
achieved.
14.1.2
M
ETHOD
2: OSCI T
RIMMER
Using the alarm function (via the I
2
C-bus) a signal faster
than 1 Hz can be generated at the interrupt output for fast
setting of a trimmer.
Procedure:
Power-on
Apply RESET
Initialization (alarm functions).
Routine:
Set clock to time T and set alarm to time T +
T
At time T +
T (interrupt) repeat routine.
14.1.3
M
ETHOD
3:
DIRECT OUTPUT
Direct measurement of oscillator output (accounting for
test probe capacitance).
Fig.23 Application diagram.
(1) Example Philips DLC 196 Double-Layer Capacitor family.
handbook, full pagewidth
MBD825
RESET
SCL
SDA
VSS
OSCI
OSCO
CLOCK CALENDAR
PCF8593
SDA
SCL
MASTER
TRANSMITTER/
RECEIVER
RESET
VDD
SDA
(I C-bus)
SCL
R
R
VDD
R: pull-up resistor
r
t
CBUS
R =
(1)
1 F
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相關代理商/技術參數(shù)
參數(shù)描述
PCF8593P 制造商:NXP Semiconductors 功能描述:Clock/Calendar/Alarm/Timer/Interrupt Serial (I2C) Bulk 制造商:NXP Semiconductors 功能描述:IC RTC/CALENDAR 8593 DIP8 制造商:NXP Semiconductors 功能描述:IC, RTC/CALENDAR, 8593, DIP8 制造商:NXP Semiconductors 功能描述:IC, RTC/CALENDAR, 8593, DIP8; Date Format:DD:MM:YYYY; Clock Format:HH:MM:SS; Clock IC Type:Clock, Calendar; Supply Voltage Min:1V; Supply Voltage Max:6V; Digital IC Case Style:DIP; No. of Pins:8; Interface Type:I2C; Operating ;RoHS Compliant: Yes
PCF8593P,112 功能描述:實時時鐘 CLOCK/CALENDAR LOW PWR 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
PCF8593P112 制造商:NXP Semiconductors 功能描述:IC RTC YY-MM-DD-dd DIP-8 制造商:NXP Semiconductors 功能描述:IC RTC/CALENDAR 8593 DIP8
PCF8593T 制造商:PHILIPS-SEMI 功能描述: 制造商:NXP Semiconductors 功能描述:Real Time Clock, 8 Pin, Plastic, SOP
PCF8593T/1 制造商:NXP Semiconductors 功能描述:Real Time Clock, 8 Pin, Plastic, SOP
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