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參數(shù)資料
| 型號： | R2033K-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, QCC12 |
| 封裝： | 2 X 2 MM, 1 MM HEIGHT, FFP-12 |
| 文件頁數(shù)： | 36/50頁 |
| 文件大?。?/td> | 542K |
| 代理商： | R2033K-E2 |
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R2033K/T
36
32768Hz Oscillation
Power-on reset flag
(PON)
Oscillation halt
sensing flag (XST)
Threshold voltage (1.6v or 1.3v)
VDD
Supply voltage
monitor flag (VDET)
Internal initialization
period (1 to 2 sec.)
VDET
←
0
XST
←
1
PON
←
0
VDET
←
0
XST
←
1
PON
←
1
VDET
←
0
XST
←
1
PON
←
0
Internal initialization
period (1 to 2 sec.)
When the PON bit is set to 1 in the control register 2, the DEV, F6 to F0, WALE, DALE, 12 /24, CLEN2 , TEST,
CT2, CT1, CT0, VDSL, VDET, CLEN1 , CTFG, WAFG, and DAFG bits are reset to 0 in the oscillation
adjustment register, the control register 1, and the control register 2. The PON bit is also set to 1 at power-on
from 0v.
< Considerations in Using Oscillation Halt Sensing Circuit >
Be sure to prevent the oscillation halt sensing circuit from malfunctioning by preventing the following:
1) Instantaneous power-down on the VDD
2) Condensation on the crystal oscillator
3) On-board noise to the crystal oscillator
4) Applying to individual pins voltage exceeding their respective maximum ratings
In particular, note that the
XST
bit may fail to be set to 0 in the presence of any applied supply voltage as
illustrated below in such events as backup battery installation. Further, give special considerations to prevent
excessive chattering in the oscillation halt sensing circuit.
VDD
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| R2033T | 3 wire interface Real-Time Clock ICs |
| R2043T | 4-wire Serial Interface |
| R2043T-E2 | 4-wire Serial Interface |
| R2043K | 4-wire Serial Interface |
| R2043K-E2 | 4-wire Serial Interface |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| R2033T | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:3 wire interface Real-Time Clock ICs |
| R2033T-E2 | 制造商:RICOH 制造商全稱:RICOH electronics devices division 功能描述:3 wire interface Real-Time Clock ICs |
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