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參數(shù)資料
| 型號： | BQ3285LS |
| 英文描述： | Real-Time Clock |
| 中文描述： | 實(shí)時(shí)時(shí)鐘 |
| 文件頁數(shù)： | 10/26頁 |
| 文件大?。?/td> | 831K |
| 代理商： | BQ3285LS |
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Register C
Register C is theread-only event status register.
Bits 0,1,2,3 - Unused Bits
Thesebits arealways set to0.
UF - Update Event Flag
This bit is set to a 1 at the end of the update cycle.
Reading register C clears this bit.
AF - Alarm Event Flag
This bit is set to a 1 when an alarm event occurs. Read-
ing register C clears this bit.
PF - Periodic Event Flag
This bit is set to a 1 every t
PI
time, where t
PI
is the time
period selected by the settings of RS0–RS3 in register A.
Reading register C clears this bit.
INTF - Interrupt Request Flag
This flag is set toa 1 when any of thefollowing is true:
AIE = 1 and AF = 1
PIE = 1 and PF = 1
UIE = 1 and UF = 1
Reading register C clears this bit.
Register D
Register D is the read-only data integrity status regis-
ter.
Bits 0–6 - Unused Bits
Thesebits arealways set to0.
VRT - Valid RAM and Time
1 = Valid backup energy source
0 = Backup energy sourceis depleted
When the backup energy source is depleted (VRT = 0),
data integrity of the RTC and storage registers is not
guaranteed.
10
7
-
6
-
5
-
4
-
3
0
2
-
1
0
0
0
7
-
6
-
5
-
4
3
-
2
-
1
-
0
-
UF
7
-
6
-
5
4
-
3
-
2
-
1
-
0
-
AF
7
-
6
5
-
4
-
3
-
2
-
1
-
0
-
PF
7
6
-
5
-
4
-
3
-
2
-
1
-
0
-
INTF
Register D Bits
4
0
7
6
0
5
0
3
0
2
0
1
0
0
0
VRT
7
-
6
0
5
0
4
0
3
0
2
0
1
0
0
0
7
6
-
5
-
4
-
3
-
2
-
1
-
0
-
VRT
July 1996
bq3285EC/LC
Register C Bits
4
UF
7
6
5
3
0
2
-
1
0
0
0
INTF
PF
AF
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| BQ3285LS- | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Real-Time Clock RTC |
| BQ3285LSN | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Real-Time Clock RTC |
| BQ3285LSS | 制造商:Rochester Electronics LLC 功能描述:REAL TIME CLOCK IC, ENHANCED - Bulk |
| BQ3285LSS- | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Real-Time Clock RTC |
| BQ3285LSSN | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Real-Time Clock RTC |
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