- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385765 > R2023K (Ricoh Co., Ltd.) 2-wire Serial Interface Real Time Clock IC PDF資料下載
參數(shù)資料
| 型號： | R2023K |
| 廠商： | Ricoh Co., Ltd. |
| 英文描述： | 2-wire Serial Interface Real Time Clock IC |
| 中文描述： | 2線串行接口實時時鐘芯片 |
| 文件頁數(shù)： | 22/50頁 |
| 文件大?。?/td> | 512K |
| 代理商： | R2023K |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁當前第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁
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
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| R2023K-E2 | 2-wire Serial Interface Real Time Clock IC |
| R2023T | 2-wire Serial Interface Real Time Clock IC |
| R2023T-E2 | 2-wire Serial Interface Real Time Clock IC |
| R2025D | High precision I2C-Bus Real-Time Clock Module |
| R2025S | High precision I2C-Bus Real-Time Clock Module |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R2023K-E2 | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:2-wire Serial Interface Real Time Clock IC |
| R2023T | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:2-wire Serial Interface Real Time Clock IC |
| R2023T-E2 | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:2-wire Serial Interface Real Time Clock IC |
| R2-0257-02 | 制造商:Southco 功能描述: |
| R2-0259-02 | 制造商:Southco 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。