LM3S8933 Luminary Micro, Inc, LM3S8933 Datasheet - Page 548

• Manufacturer Part Number: LM3S8933
• Description: Lm3s8933 Arm Microcontroller
• Manufacturer: Luminary Micro, Inc

Electrical Characteristics
22.2.3
548
Table 22-8. Clock Characteristics
a. The ADC must be clocked from the PLL or directly from a 14-MHz to 18-MHz clock source to operate properly.
Table 22-9. Crystal Characteristics
Analog-to-Digital Converter
Table 22-10. ADC Characteristics
f
f
f
f
f
f
t
f
f
f
Parameter Name
Frequency
Frequency tolerance
Aging
Oscillation mode
Temperature stability (-40°C to 85°C)
Temperature stability (-40°C to 105°C)
Motional capacitance (typ)
Motional inductance (typ)
Equivalent series resistance (max)
Shunt capacitance (max)
Load capacitance (typ)
Drive level (typ)
Parameter
V
C
N
f
t
f
INL
IOSC
IOSC30KHZ
XOSC
XOSC_XTAL
XOSC_EXT
MOSC
MOSC_per
ref_crystal_bypass
ref_ext_bypass
system_clock
ADC
ADCCONV
ADCCONV
ADCIN
ADCIN
Parameter
Parameter Name
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
Conversion time
Conversion rate
Integral nonlinearity
Parameter Name
Internal 12 MHz oscillator frequency
Internal 30 KHz oscillator frequency
Hibernation module oscillator frequency
Crystal reference for hibernation oscillator
External clock reference for hibernation module
Main oscillator frequency
Main oscillator period
Crystal reference using the main oscillator (PLL in BYPASS mode)
a
External clock reference (PLL in BYPASS mode)
System clock
Parallel
27.8
14.3
±50
±25
±25
120
100
10
16
±5
8
a
Preliminary
Parallel
37.0
19.1
±50
±25
±25
160
100
±5
10
16
6
Value
Parallel
55.6
28.6
±50
±25
±25
200
100
±5
10
16
4
a
Parallel
63.5
32.7
±50
±25
±25
220
100
Min
875
3.5
±5
10
16
14
-
-
-
-
-
-
-
-
Nom
1000
10
16
Units
ppm/yr
1
-
-
-
-
-
-
MHz
ppm
ppm
ppm
mH
µW
pF
pF
pF
Ω
-
1125
Max
-1.5
3.0
1.5
18
16
±1
0
-
-
Min
125
8.4
21
V
V
V
V
pF
bits
MHz
t
k samples/s
LSB
1
1
0
0
-
-
-
ADC
Unit
4.194304
4.194304
cycles
32.768
Nom
12
30
-
-
-
-
-
b
1000
Max
15.6
39
50
50
8
8
-
-
-
July 25, 2008
MHz
MHz
MHz
MHz
MHz
MHz
MHz
Unit
KHz
KHz
ns