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參數(shù)資料
| 型號： | SH3001IMLTRT |
| 元件分類： | 時鐘/數(shù)據(jù)恢復(fù)及定時提取 |
| 英文描述： | REAL TIME CLOCK, QCC16 |
| 封裝： | 3 X 3 MM, 0.90 MM HEIGHT, LEAD FREE, MLP-16 |
| 文件頁數(shù)： | 5/20頁 |
| 文件大?。?/td> | 788K |
| 代理商： | SH3001IMLTRT |
SH3001 MicroBuddy
SYSTEM MANAGEMENT
Copyright 2002-2005 Semtech Corporation
13
V1.15
www.semtech.com
Operating characteristics with crystal oscillator
Parameter
Symbol
Min
Typ
Max
Units
Crystal operating frequency
Fop
32.768
kHz
CLK32 duty cycle
DC
25
75
%
Startup time
Tst
3
secs
Minimum XIN/XOUT padding capacitance
Cmin
10
pF
Maximum XIN/XOUT padding capacitance
Cmax
40
pF
Padding capacitance resolution
Cres
2
pF
XIN switching threshold
Vth
0.6
V
XIN to CLK32 delay
Td
0.5
s
CLK32 frequency stability (crystal-dependent)
Fs
1
ppm/°C
CLK32 cycle to cycle jitter
J
0.05
CLK32 rise/fall time (10 pF load)
Trf
10
ns
CLK32 logic output low (0.5 mA load)
Vol
0.25
0.5
V
CLK32 logic output high (0.5 mA load)
Voh
-0.5
-0.25
Ref VDD*
*Note: VDD here is VDD during normal operation and VBAK during battery backup.
Operating characteristics of the high-frequency oscillator (HFO)
Parameter
Symbol
Min
Typ
Max
Units
Minimum operating frequency (Start-up default = 2 MHz)
Fmin
5.6
8
MHz
Maximum operating frequency
Fmax
16.8
21
MHz
Frequency resolution
Fres
2
kHz
Programmed frequency accuracy at 25°C
Fst
-0.3
+0.3
%
Frequency drift over temperature and supply
Fdrift
±0.5
%
CLKOUT cycle to cycle jitter (spread spectrum off)
J
0.1
%
Startup time from standby
Tstart
2
s
Settling time to 0.1% after HF digitally-controlled oscillator
(DCO) code change
Tsett
10
s
CLKOUT duty cycle
DC
40
60
%
Frequency temperature stability
Fts
100
ppm/°C
Short term frequency stability
Fs
0.5
%/sec
Minimum spread spectrum range
SSmin
32
kHz
Maximum spread spectrum range
SSmax
256
kHz
CLKOUT rise/fall time (20 pF load)
Trf
3
ns
CLKOUT logic output low (4 mA load)
Vol
0.25
0.4
V
CLKOUT logic output high (4 mA load)
Voh
-0.4
-0.25
Ref VDD
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