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參數(shù)資料
| 型號(hào)： | CDCE401YS |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | OSCILLATOR IC WITH ELECTRONIC CALIBRATION |
| 中文描述： | 振蕩器IC與電子校準(zhǔn) |
| 文件頁數(shù)： | 7/19頁 |
| 文件大?。?/td> | 246K |
| 代理商： | CDCE401YS |
www.ti.com
TYPICAL CYCLE, PROGRAMMING THREE WORDS INTO EEPROM
Figure 3
shows an
enter register programming mode
and how the different words can be written. Bold highlights
the addressing of word0–word2. After that, the payload for the respective word is clocked in. In this example,
this is followed by a jump from state 2
→
state 3 into
enter EEPROM programming with EEPROM lock
. In the
EEPROM-programming state, it is necessary to wait at least 10 ms for safe programming. The last command is
a jump from state 3 into state 1 (normal operation).
Enter Programming Sequence
Word0
After 8 bits, the payload
data is transferred to
the RAM and is active.
Wait for at least
10 ms before
exiting EEPROM
write phase, for
safe operation.
Payload
Word1
Payload
Word2
Payload
State
Machine
Jump
State
Machine
Jump
State 2
State 3
State 3
State 1
T0043-02
TYPICAL WRITE/VERIFY/PROGRAM CYCLE
As stated previously in this document, for safe writing and programming, the supply voltage must be held within
a narrow window of 3.2 V ±100 mV.
Figure 1
illustrates writing to the device and verifying the settings, followed
by a safe programming into EEPROM.
CDCE401
SCAS820–JUNE 2006
Figure 3. EEPROM Programming Example
7
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