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RV-3049 датащи(PDF) 55 Page - MICORO CRYSTAL SWITZERLAND

номер детали RV-3049
подробное описание детали  DTCXO Temperature Compensated Real Time Clock
PDF  65 Pages
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производитель  MICROCRYSTAL [MICORO CRYSTAL SWITZERLAND]
домашняя страница  http://www.microcrystal.com
Logo MICROCRYSTAL - MICORO CRYSTAL SWITZERLAND

RV-3049 датащи(HTML) 55 Page - MICORO CRYSTAL SWITZERLAND

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Micro Crystal
DTCXO Temperature Compensated Real Time Clock / Calendar Module
RV-3049
55/65
7.5. SPI INTERFACE DYNAMIC CHARACTERISTICS
VSS= 0 V; Tamb= -40°C to +125°C. All timing values are valid within the operating supply voltage range and
references to VIL and VIH with an input voltage swing from VSS to VDD.
PARAMETER
SYMBOL
CONDITIONS
VDD = 1.4V
VDD = 1.8V
VDD = 3.0V
VDD = 5.0V
UNIT
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
SCL clock frequency
fclk(SCL)
0.2
0.6
1.0
1.0
MHz
SCL time
tSCL
5
1.7
1
1
µ
s
Clock HIGH time
tclk(H)
1500
700
400
400
ns
Clock LOW time
tclk(L)
1500
700
400
400
ns
Rise time
tr
for SCL signal
800
800
200
200
ns
Fall time
tr
for SCL signal
800
800
200
200
ns
CE setup time
tsu(CE)
100
100
100
100
ns
CE hold time
th(CE)
500
300
200
200
ns
CE recovery time
trec(CE)
400
300
200
200
ns
CE pulse width
tw(CE)
Measured after valid
sub address is
received
0.49
0.49
0.49
0.49
s
Setup time
tsu
Setup time for SDI
data
20
20
20
20
ns
Hold time
th
Hold time for SDI
data
500
300
200
200
ns
SDO read delay time
td(R)SDO
Bus load = 50pF
1300
650
350
350
ns
SDO disable time
tdis(SDO)
No load value; bus
will be held up by
bus capacitance;
use RC time
constant with
application values
200
100
50
50
ns
Transition time SDI to SDO
tt(SDI-SDO)
Prepare for 0ns to
avoid bus conflict
0
0
0
0
ns



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