參數(shù)資料
型號(hào)： R2023T-E2
廠商： RICOH COMPANY LTD
元件分類： XO, clock
英文描述： 2-wire Serial Interface Real Time Clock IC
中文描述： REAL TIME CLOCK, PDSO10
封裝： 4 X 2.90 MM, 1 MM HEIGHT, TSSOP-10
文件頁數(shù)： 22/50頁
文件大?。?/td> 512K
代理商： R2023T-E2
R2023K/T
is because there are two pins of SDA and SCL. The third member, (charging/discharging times per unit time)
means number of transition from “H” to “L” of the signal line.
Calculation example is shown below:
Pull-up resistor (Rp) = 10k
, Bus capacity = 50pF(both for SCL, SDA), V
DD
=3V,
In a system with sum of input current and off-state output current of each pin = 0.1
μ
A,
I
2
C-Bus is used for 10ms every second while the rest of 990ms in the stand-by mode,
In this mode, number of transitions of the SCL pin from “H” to “L” state is 100 while SDA 50, every second.
Bus consumption current
≈
0.1
μ
A
×
990msec
990msec + 10msec
+ 3V
×
10msec
×
2
10K
×
2
×
(990msec + 10msec)
+ 3V
×
50pF
×
(100 + 50)
≈
0.099
μ
A + 3.0
μ
A + 0.0225
μ
A
≈
3.12
μ
A
Generally, the second member of the above formula is larger enough than the first and the third members bus
consumption current may be determined by the second member is many cases.
22
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
R2-0257-02 制造商:Southco 功能描述:
R2-0259-02 制造商:Southco 功能描述:
R2025D 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:High precision I2C-Bus Real-Time Clock Module
R2025S 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:High precision I2C-Bus Real-Time Clock Module
R2-0267-02 制造商:Southco 功能描述:
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