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參數(shù)資料
| 型號(hào)： | RX-4045NBAA |
| 元件分類： | XO, clock |
| 英文描述： | REAL TIME CLOCK, PDSO22 |
| 封裝： | ROHS COMPLIANT, SON-22 |
| 文件頁(yè)數(shù)： | 29/37頁(yè) |
| 文件大?。?/td> | 554K |
| 代理商： | RX-4045NBAA |
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RX - 4045 SA / NB
Page - 32
MQ442-01
10. Reference Data
[Finding the frequency stability]
1. Frequency and temperature characteristics can be
approximated using the following equations.
fT = α (θT - θX)
2
fT
: Frequency deviation in any
temperature
α
(1 /
°C
2) : Coefficient of secondary temperature
(
0.035±0.005) × 10
-6 / °C2
θT (°C)
: Ultimate temperature (+25
±5 °C)
θX (°C)
: Any temperature
2. To determine overall clock accuracy, add the frequency
precision and voltage characteristics.
f/f = f/fo + fT + fV
f/f
: Clock accuracy (stable frequency) in any
temperature and voltage
f/fo : Frequency precision
fT
: Frequency deviation in any temperature
fV
: Frequency deviation in any voltage
3. How to find the date difference
Date difference =
f/f × 86400 (seconds)
* For example:
f/f = 11.574 × 10
-6 is an error of
approximately 1 second/day.
(1) Example of frequency and temperature characteristics
-150
-100
-50
0
-50
0
+50
+100
Temperature [
°C]
F
re
que
nc
y
fT
× 10-6
θT = +25 °C Typ.
α = -0.035 × 10-6 Typ.
(2) Example of frequency and voltage characteristics
- 3
2
Fre
quency
fv
×10
6
+ 3
0
3
4
5
Condition :
3 V as reference, Ta=+25
°C
Supply Voltage VDD[V]
(3) Current and voltage consumption characteristics
Current consumption when non-accessed (i)
when FOUT=OFF
2
C
ur
re
nt
c
ons
um
pt
io
n[
A]
Supply Voltage VDD[V]
1.0
0.5
3
4
5
Condition :
Ta = +25
°C
CE = GND
INT = VDD
FOUT ; Output OFF
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| RX-4045SA | 制造商:EPSON 制造商全稱:EPSON 功能描述:4-wire serial interface high-stability RTC module |
| RX-4045SA,(AA) | 制造商:Epson Toyocom 功能描述:Serial Interface RTC SOP 14pin |
| RX-4045SAAA | 制造商:Epson Toyocom Corporation 功能描述:Cut Tape 制造商:Epson Toyocom Corporation 功能描述:RTC HI STABILITY SERIAL SMD SOP14 制造商:Epson Toyocom Corporation 功能描述:RTC HI STABILITY SERIAL, SMD, SOP14 制造商:Epson Toyocom Corporation 功能描述:RTC HI STABILITY SERIAL, SMD, SOP14; Date Format:YYYY:MM:DD:Hr:Min:Secs; Clock Format:12Hr / 24Hr; Clock IC Type:RTC; Supply Voltage Min:1.7V; Supply Voltage Max:5.5V; Digital IC Case Style:SOP; No. of Pins:14; Interface Type:Serial;;RoHS Compliant: Yes |
| RX-409 | 功能描述:烙鐵 SOLDERING TIP RoHS:否 制造商:Weller 產(chǎn)品:Soldering Stations 類型:Digital, Iron, Stand, Cleaner 瓦特:50 W 最大溫度:+ 850 F 電纜類型:US Cord Included |
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