LM3S8G62 Datasheet, PDF (1048/1096 Pages) Texas Instruments – Stellaris® LM3S8G62 Microcontroller

OBSOLETE: TI has discontinued production of this device.
Electrical Characteristics
Table 24-34. Ethernet Reference Crystal (continued)
Parameter
Parameter Name
Min
Nom
Max
TOL_XTALPHYOSC
Ethernet PHY oscillator frequency
tolerance^a
-
±50
-
MODE_XTALPHYOSC Ethernet PHY oscillation mode
Parallel resonance, fundamental mode
a. This tolerance provides a guard band for temperature stability and aging drift.
Figure 24-18. External XTLP Oscillator Characteristics
Unit
PPM
-
T_r
T_f
T_clkhi
T_clkper
T_clklo
24.17
Table 24-35. External XTLP Oscillator Characteristics
Parameter
Parameter Name
Min
XTLN_ILV
XTLN Input Low Voltage
-
XTLP_F
XTLP Frequency^a
-
T_CLKPER
XTLP Period^a
-
XTLP_DC
XTLP Duty Cycle
40
40
T_R , T_F
Rise/Fall Time
-
T_JITTER
Absolute Jitter
-
a. IEEE 802.3 frequency tolerance ±50 ppm.
Analog Comparator
Table 24-36. Analog Comparator Characteristics
Parameter Parameter Name
Min
V_INP,V_INN
Input voltage range
GND
V_CM
Input common mode voltage range
GND
V_OS
Input offset voltage
-
C_MRR
Common mode rejection ratio
50
T_RT
Response time
-
T_MC
Comparator mode change to Output Valid
-
Nom
Max
-
0.8
25.0
-
40
-
-
60
60
-
4.0
-
0.1
Nom
-
-
±10
-
-
-
Max
V_DD
V_DD-1.5
±25
-
1.0
10
Unit
-
-
-
%
ns
ns
Unit
V
V
mV
dB
µs
µs
1048
Texas Instruments-Production Data
July 24, 2012