- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384875 > R2033T-E2 (RICOH COMPANY LTD) 3 wire interface Real-Time Clock ICs PDF資料下載
參數(shù)資料
| 型號： | R2033T-E2 |
| 廠商： | RICOH COMPANY LTD |
| 元件分類： | XO, clock |
| 英文描述： | 3 wire interface Real-Time Clock ICs |
| 中文描述： | 0 TIMER(S), REAL TIME CLOCK, PDSO10 |
| 封裝： | 4 X 2.90 MM, 1 MM HEIGHT, TSSOP-10 |
| 文件頁數(shù)： | 34/50頁 |
| 文件大?。?/td> | 542K |
| 代理商： | R2033T-E2 |
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頁當前第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
R2033K/T
(4) Difference between DEV=0 and DEV=1
Difference between DEV=0 and DEV=1 is following,
Maximum value range
Minimum resolution
Notes:
If following 3 conditions are completed, actual clock adjustment value could be different from target
adjustment value that set by oscillator adjustment function.
1. Using oscillator adjustment function
2. Access to R2033K/T at random, or synchronized with external clock that has no relation to R2033K/T, or
synchronized with periodic interrupt in pulse mode.
3. Access to R2033K/T more than 2 times per each second on average.
For more details, please contact to Ricoh.
How to evaluate the clock gain or loss
34
DEV=0
DEV=1
-189.2ppm to 189.2ppm
3ppm
-62ppm to 63ppm
1ppm
The oscillator adjustment circuit is configured to change time counts of 1 second on the basis of the settings of
the oscillation adjustment register once in 20 seconds or 60 seconds. The oscillation adjustment circuit does
not effect the frequency of 32768Hz-clock pulse output from the 32KOUT pin. Therefore, after writing the
oscillation adjustment register, we cannot measure the clock error with probing 32KOUT clock pulses. The way
to measure the clock error as follows:
(1) Output a 1Hz clock pulse of Pulse Mode with interrupt pin
Set (0,0,x,x,0,0,1,1) to Control Register 1 at address Eh.
(2) After setting the oscillation adjustment register, 1Hz clock period changes every 20seconds ( or every 60
seconds) like next page figure.
1Hz clock pulse
T0
T0
T0
T1
1 time
19 times
Measure the interval of T0 and T1 with frequency counter. A frequency counter with 7 or more digits is
recommended for the measurement.
(3) Calculate the typical period from T0 and T1
T = (19
×
T0+1
×
T1)/20
Calculate the time error from T.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| R2033K | 3 wire interface Real-Time Clock ICs |
| R2033K-E2 | 3 wire interface Real-Time Clock ICs |
| R2033T | 3 wire interface Real-Time Clock ICs |
| R2043T | 4-wire Serial Interface |
| R2043T-E2 | 4-wire Serial Interface |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R203426000 | 功能描述:RF 連接器 SSMB(M) STR NA PCB RoHS:否 制造商:Bomar Interconnect 產(chǎn)品:Connectors 射頻系列:BNC 型式:Jack (Female) 極性: 觸點電鍍:Gold 阻抗: 端接類型:Solder 主體類型:Straight Bulkhead 電纜類型: |
| R203426000W | 功能描述:RF 連接器 EMB DR CI RoHS:否 制造商:Bomar Interconnect 產(chǎn)品:Connectors 射頻系列:BNC 型式:Jack (Female) 極性: 觸點電鍍:Gold 阻抗: 端接類型:Solder 主體類型:Straight Bulkhead 電纜類型: |
| R203553000 | 功能描述:RF 連接器 SSMB(M) STR BH SP RoHS:否 制造商:Bomar Interconnect 產(chǎn)品:Connectors 射頻系列:BNC 型式:Jack (Female) 極性: 觸點電鍍:Gold 阻抗: 端接類型:Solder 主體類型:Straight Bulkhead 電纜類型: |
| R203665000 | 功能描述:RF 連接器 SSMB(M)R/A PCB NC PN RoHS:否 制造商:Bomar Interconnect 產(chǎn)品:Connectors 射頻系列:BNC 型式:Jack (Female) 極性: 觸點電鍍:Gold 阻抗: 端接類型:Solder 主體類型:Straight Bulkhead 電纜類型: |
| R203665000W | 功能描述:RF 連接器 EMB COUD CI RoHS:否 制造商:Bomar Interconnect 產(chǎn)品:Connectors 射頻系列:BNC 型式:Jack (Female) 極性: 觸點電鍍:Gold 阻抗: 端接類型:Solder 主體類型:Straight Bulkhead 電纜類型: |
發(fā)布緊急采購，3分鐘左右您將得到回復。