參數(shù)資料
型號: BQ3287MT-I
廠商: TEXAS INSTRUMENTS INC
元件分類: XO, clock
英文描述: 1 TIMER(S), REAL TIME CLOCK, DMA24
封裝: ROHS COMPLIANT, PLASTIC, MODULE, DIP-24
文件頁數(shù): 3/8頁
文件大?。?/td> 102K
代理商: BQ3287MT-I
3
Sept. 1996 D
Power-Down/Power-Up Timing (TA =TOPR)
Symbol
Parameter
Minimum
Typical
Maximum
Unit
Conditions
tF
VCC slew from 4.5V to 0V
300
-
s
tR
VCC slew from 0V to 4.5V
100
-
s
tCSR
CS at VIH after power-up
20
-
200
ms
Internal write-protection
period after VCC passes VPFD
on power-up.
tDR
Data-retention and time-
keeping time
10
-
years
TA = 25°C.
Note:
Clock accuracy is better than
± 1 minute per month at 25°C for the period of tDR.
Caution:
Negative undershoots below the absolute maximum rating of -0.3V in battery-backup mode
may affect data integrity.
Power-Down/Power-Up Timing
bq3287/bq3287A
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