Si504
A
N Y
- F
REQUENCY
32
K
H
Z
–100 M H
Z
CMEMS
O
SCILLATOR
Features
Wide frequency range: 32 kHz to
100 MHz
Contact Silicon Labs for
frequencies above 100 MHz
±20/30/50 ppm frequency stability
including 10-year aging
Single wire interface
LVCMOS output
Continuous supply voltage range:
+1.71 V to +3.63 V
Low power
Low period jitter
User selectable tRise/tFall options
Glitchless start and stop
Excellent short-term stability, long-
term aging
Industry standard footprints:
2x2.5, 2.5x3.2, 3.2x5 mm
RoHS compliant, Pb-free
Short lead times: <2 weeks
–20 to +70 °C: Extnd commercial
–40 to +85 °C: Industrial
Ordering Information:
See page 20.
Pin Assignments
Applications
Storage (SATA/SAS/PCIe)
General purpose processors
Industrial controllers
Embedded controllers
Motor control
Flow control
Office/Home automation
IP cameras/surveillance
display and control panels
Outdoor electronics
Multi-function printers
Office equipment
C1D
GND
1
2
4
3
V
DD
CLK
Description
The Si50x CMEMS oscillator family provides monolithic, MEMS-based IC
replacements for traditional crystal oscillators. Silicon Laboratories’ CMEMS
technology combines standard CMOS and MEMS in a single, monolithic IC to
provide integrated, high-quality and high-reliability oscillators. Each device is
factory tested and configured for guaranteed performance to data sheet
specifications across voltage, process, temperature, shock, vibration, and aging.
The Si504 programmable CMEMS oscillator provides any frequency and
supported feature set from 32 kHz to 100 MHz through a single wire interface.
Patents pending
Functional Block Diagram
VDD
LDO
Digital
Frequency-Locked
Loop (FLL)
Resonator
& Oscillator
Temperature
Sensor
VCO
C1D
Temp Comp /
Digital
Control
NVM RAM ROM
M
M
÷
CLK
GND
Preliminary Rev. 0.72 11/13
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
Copyright © 2013 by Silicon Laboratories
Si504
Si504
T
ABLE
Section
OF
C
ONTENTS
Page
1. Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2. Typical Applications Circuit and AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2.1. Application Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2.2. AC Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3. Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1. Si504 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2. Frequency Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3. Operational Modes (Run, Stop, Doze, Sleep) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.4. Output Rise and Fall Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.5. Single Wire C1 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.6. C1 Setup/Reset Sequence, Command/Byte Write
Transaction and Issuing Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.7. Command State Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
3.8. Command Byte Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4. Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5. Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6. Package Dimensions and Land Patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.1. Package Outline: 3.2 x 5 mm 4-pin DFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.2. Package Outline: 2.5 x 3.2 mm 4-pin DFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.3. Package Outline: 2 x 2.5 mm 4-pin DFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7. Top Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
7.1. 3.2 x 5 mm Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.2. 3.2 x 5 mm Top Marking Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.3. 2.5 x 3.2 mm Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7.4. 2.5 x 3.2 mm Top Marking Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
7.5. 2 x 2.5 mm Top Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7.6. 2 x 2.5 mm Top Marking Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Document Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
2
Preliminary Rev. 0.72
Si504
1. Electrical Specifications
Table 1. Recommended Operating Conditions
Parameter
Supply Voltage
1
Supply Current
Symbol
V
DD
I
DD1
C
L
=4 pF, 3.3 V
DD
, F
CLK
=1.0 MHz, low
power option
C
L
=4 pF, 3.3 V
DD
, F
CLK
=100 MHz, low
power option
C
L
=4 pF, 3.3 V
DD
, F
CLK
=1.0 MHz, low
jitter option
C
L
=4 pF, 3.3 V
DD
, F
CLK
=100 MHz, low
jitter option
Static
Supply Current
I
DD2
Mode=Stop, low power option
F
CLK
=1 MHz
Mode=Stop, low jitter option
F
CLK
=1 MHz
Mode=Doze
Mode=Sleep
2
Input High
Voltage
Input Low
Voltage
Internal Pull-up
Resistor
Operating
Temperature
V
IH
V
IL
R
I
T
A
C1D pin
C1D pin
C1D pin
Extended commercial grade
Industrial grade
V
DD
= 1.71 to 3.63 V, T
A
= –40 to 85
C unless otherwise indicated.
Test Condition
Min
1.71
—
—
—
—
—
—
—
—
0.7 x V
DD
—
40
–20
–40
Typ
—
1.7
5.3
3.9
7.6
1.7
3.9
670
0.3
—
—
50
—
—
Max
3.63
2.5
6.5
4.9
8.9
2.5
4.9
890
1
—
0.3 x V
DD
60
70
85
Unit
V
mA
mA
mA
mA
mA
mA
A
A
V
V
kΩ
C
C
Notes:
1.
The supply voltage range is continuous from 1.71 to 3.63 V.
2.
C1D steady state = high.
Preliminary Rev. 0.72
3
Si504
Table 2. Output Clock Frequency Characteristics
1
Parameter
Frequency
Range
Step Size
Clock Period
Total Stability
2
T
CLK
F
STAB
1/F
CLK
Symbol
F
CLK
V
DD
= 1.71 to 3.63 V, T
A
= –40 to 85
C unless otherwise indicated.
Test Condition
Min
0.032
—
31,250
–20
–30
–50
Typ
—
29.8
—
—
—
—
±2
2.5
2.5
1.7
—
—
—
—
Max
100
—
10
+20
+30
+50
—
4
5
2.5
1.5 x T
CLK
+
35
225
1.5 x T
CLK
+
35
5
Unit
MHz
ppb
ns
ppm
ppm
ppm
ppm
ms
ms
ms
ns
s
ns
ms
Initial Accuracy
Startup Time
Resume Time
F
I
T
SU
T
RUN
Measured at 25
C at the time of
shipping
From V
DD
crossing 1.71 V to first
clock output.
From sleep mode
From doze mode
From stop mode
—
—
—
—
—
—
—
—
Output Disable Time
T
D
To sleep/doze mode, from output
running
To stop, from output running
Frequency Update
Time
Offset/Slew Rate
Time
T
NEW_FREQ
From end of NewFreq or
OriginalFreq command to when
new frequency has stabilized.
T
SLEW
From end of Offset Freq command
to when offset/slewed frequency
has stabilized.
—
600
—
s
Notes:
1.
Refer to Figures 2, 3, and 7 for timing diagrams and additional information.
2.
Orderable option. Stability budget consists of 10-year aging, initial tolerance, operating temperature range, rated power
supply voltage change, load change, aging, shock, and vibration
.
4
Preliminary Rev. 0.72
Si504
Table 3. Single Wire Interface AC Characteristics*
Parameter
Bit “0” Nominal
Duration
Bit “1” Nominal
Duration
Bit “0” Tolerance
Bit “1” Tolerance
Transaction
Reset/Abort Time
Byte Write Within
Command
Sequence Spacing
Between Command
Sequence Spacing
Initial/Reset
Sequence to 1st
Command
Sleep Wake Up
Pulse Width
Symbol
T
ZERO
T
ONE
T
ZERO-TOL
T
ONE-TOL
T
RESET
T
CBI
T
ZERO
x ± 10%
T
ONE
x ± 10%
V
DD
= 1.71 to 3.63 V, T
A
= –40 to 85
C unless otherwise indicated.
Test Condition
Min
0.45
2.5 x T
ZERO
0.9
0.9
30
50
Typ
—
—
—
—
—
—
Max
5.5
16
1.1
1.1
—
—
Unit
s
s
s
s
T
CI
T
RSC
1
1
—
—
—
—
ms
ms
T
WUP
0.2
—
—
s
*Note:
Refer to Figures 2, 3, and 7 for timing diagrams and additional information.
Preliminary Rev. 0.72
5
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