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SH3003 Datasheet(PDF) 4 Page - Semtech Corporation

No. de pieza SH3003
Descripción Electrónicos  MicroBuddy짰 Support IC for Microcontrollers
PDF  30 Pages
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Fabricante Electrónico  SEMTECH [Semtech Corporation]
Página de inicio  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SH3003 Datasheet(HTML) 4 Page - Semtech Corporation

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©2006 Semtech Corp.
SH3003
www.semtech.com
Not authorized for release outside of Semtech
- DRAFT
POWER MANAGEMENT
Parameter
Symbol
Min
Typ
Max
Units
Crystal operating frequency
F
OP
32.768
kHz
CLK32 duty cycle
DC
25
75
%
Start-up time
T
ST
3
secs
XIN/XOUT padding capacitance after power-up
C
PUP
12.5
pF
Minimum X
IN/XOUT padding capacitance
C
MIN
10
pF
Maximum X
IN/XOUT padding capacitance
C
MAX
40
pF
Padding capacitance resolution
C
RES
2pF
X
IN switching threshold
V
TH
0.6
V
X
IN to CLK32 delay
T
D
0.5
ppm/°C
CLK32 frequency stability (crystal-dependent)
F
S
1
μs
CLK32 cycle-to-cycle jitter
J
0.05
%
CLK32 rise/fall time (10pF load)
T
RF
10
ns
CLK32 logic output low (0.5mA load)
V
OL
0.25
0.5
V
CLK32 logic output high (0.5mA load)
V
OH
-0.5
-0.25
Ref VDD*
Crystal Oscillator
*Note: VDD here is VDD during normal operation and VBAK during battery backup.
Parameter
Symbol
Min
Typ
Max
Units
External 1MΩ referenced nominal frequency
F
EXT
32.768
kHZ
Internal 1MΩ referenced nominal frequency
F
INT
32.768
kHZ
CLK32 duty cycle*
DC
40
60
%
Programmed frequency accuracy at 25°C
F
ST
-1
+1
%
Absolute accuracy (temp. & supply external 1MΩ)F
DE
±2
%
Absolute accuracy (temp. & supply internal 1MΩ)
F
DI
±3
%
Frequency temperature stability (ext. 1MΩ)F
SE
100
ppm/°C
Frequency temperature stability (int. 1MΩ)F
SI
200
ppm/°C
Power on start-up time
T
ST
70
μs
CLK32 cycle-to-cycle jitter*
J
0.1
%
32.768kHz RC Oscillator
*Note: After power-up, pin CLK32 is disabled, pin RREF is also disabled, and the oscillator is set to operate without the
external reference resistor.
Electrical Characteristics (continued)



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