LM3S102 Luminary Micro, Inc, LM3S102 Datasheet - Page 318
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LM3S102
Manufacturer Part Number
LM3S102
Description
Lm3s102 Arm Microcontroller
Manufacturer
Luminary Micro, Inc
Datasheet
1.LM3S102.pdf
(330 pages)
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Electrical Characteristics
18.2
18.2.1
18.2.2
318
AC Characteristics
Load Conditions
Unless otherwise specified, the following conditions are true for all timing measurements. Timing
measurements are for 4-mA drive strength.
Figure 18-1. Load Conditions
Clocks
Table 18-6. Phase Locked Loop (PLL) Characteristics
a. The exact value is determined by the crystal value programmed into the XTAL field of the Run-Mode Clock
b. PLL frequency is automatically calculated by the hardware based on the XTAL field of the RCC register.
Table 18-7. Clock Characteristics
f
f
f
T
f
f
t
f
f
f
REF_CRYSTAL
REF_EXT
PLL
IOSC
MOSC
MOSC_PER
REF_CRYSTAL_BYPASS
REF_EXT_BYPASS
SYSTEM_CLOCK
READY
Configuration (RCC) register (see page 75).
Parameter
Parameter
Parameter Name
Internal oscillator
frequency
Main oscillator frequency
Main oscillator period
Crystal reference using the
main oscillator (PLL in
BYPASS mode)
External clock reference
(PLL in BYPASS mode)
System clock
Parameter Name
Crystal reference
External clock reference
PLL frequency
PLL lock time
pin
Preliminary
b
a
a
GND
3.579545
3.579545
C
Min
125
Min
L
7
1
1
0
0
-
-
= 50 pF
Nom
Nom
200
15
-
-
-
-
-
-
-
-
8.192
8.192
1000
Max
Max
0.5
22
20
20
8
8
-
July 6, 2006
MHz
MHz
MHz
MHz
MHz
Unit
MHz
MHz
MHz
Unit
ms
ns
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