DSC2010FI2-B0004 Datasheet, PDF (3/6 Pages) Micrel Semiconductor – Crystal-less™ Configurable Clock Generator

Micrel, Inc.
DSC2010FI2-B0004
Operational Description
The DSC2010FI2-B0004 is a LVCMOS oscillator
consisting of a MEMS resonator and a supporting
PLL IC. The LVCMOS output is generated through
independent 8-bit programmable dividers from the
output of the internal PLL.
The actual frequency output by DSC2010FI2-B0004
is controlled by an internal pre-programmed memory
(OTP). This memory stores all coefficients required
by the PLL for up to four different frequencies.
Two control pins (FS0, FS1) select the output
frequency.
When OE (pin 1) is floated or connected to VDD, the
DSC2010FI2-B0004 is in operational mode. Driving
OE to ground will disable the output driver (hi-
impedance mode).
DSC2010FI2-B0004 has programmable output drive
strength. Using three control pins (OS0-OS2) the drive
strength can be adjusted to match circuit board
impedances to reduce power supply noise, overshoot/
undershoot and EMI. Table 1 displays typical rise / fall
times for the output with a 15pF load capacitance as a
function of these control pins at VDD = 3.3V and
room temperature.
Output Drive Strength Bits [OS2, OS1, OS0] - Default is [111]
000
001
010
011
100
101
110
111
tr (ns)
2.1
1.7
1.6
1.4
1.3
1.3
1.2
1.1
tf (ns)
2.5
2.4
2.4
2.2
1.8
1.6
1.4
1.4
Table 1. Rise/Fall Times for Drive Strengths
Output Clock Frequencies
Frequency select bits are weakly tied high so if left unconnected the default setting will be [11] and the device will output the
associated frequency highlighted in bold.
Freq (MHz)
CLK1
Freq Select Bits [FS1, FS0] - Default is [11]
00
01
10
11
155.52
106.25
NA
125
Table 2. Pin-Selectable Output Frequencies
Absolute Maximum Ratings
Item
Supply Voltage
Input Voltage
Junction Temp
Storage Temp
Soldering Temp
ESD
HBM
MM
CDM
1000+ years of data retention on internal memory
Min.
-0.3
-0.3
-
-55
-
-
Max.
+4.0
VDD + 0.3
+150
+150
+260
4000
400
1500
Units
V
V
°C
°C
°C
V
Condition
40sec max.
January 19, 2015
2642
3
Revision 1.0
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