LM3S617 Datasheet, PDF (364/379 Pages) List of Unclassifed Manufacturers – Microcontroller

Electrical Characteristics
19.2.3
Table 19-7. Clock Characteristics
Parameter
Parameter Name
Min
Nom
Max
Unit
f_IOSC
Internal oscillator
frequency
7
15
22
MHz
f_MOSC
Main oscillator frequency
1
t_{MOSC_PER}
Main oscillator period
125
f_{REF_CRYSTAL_BYPASS} Crystal reference using the
1
main oscillator (PLL in
BYPASS mode)^a
-
8
MHz
-
1000
ns
-
8
MHz
f_{REF_EXT_BYPASS}
External clock reference
0
(PLL in BYPASS mode)^a
-
50
MHz
f_{SYSTEM_CLOCK}
System clock
0
-
50
MHz
a. The ADC must be clocked from the PLL or directly from a 14-MHz to 18-MHz clock source in order to operate
properly.
Analog-to-Digital Converter
Table 19-8. ADC Characteristics
Parameter
Parameter Name
Min
V_ADCIN
C_ADCIN
N
f_ADC
t_ADCCONV
f_ADCCONV
INL
DNL
OFF
GAIN
Maximum single-ended, full-scale
-
analog input voltage
Minimum single-ended, full-scale
-
analog input voltage
Maximum differential, full-scale
-
analog input voltage
Minimum differential, full-scale analog
-
input voltage
Equivalent input capacitance
-
Resolution
-
ADC internal clock frequency
7
Conversion time
-
Conversion rate
438
Integral nonlinearity
-
Differential nonlinearity
-
Offset
-
Gain
-
a. t_ADC = 1/f_{ADC clock}
Nom
-
-
-
-
1
10
8
-
500
-
-
-
-
Max
Unit
3.0
V
0
V
1.5
V
-1.5
V
-
pF
-
bits
9
MHz
16
t_ADC cycles^a
563
k samples/s
±1
LSB
±1
LSB
+2
LSB
±2
LSB
364
May 4, 2007
Preliminary