LM3S6611 Datasheet, PDF (443/477 Pages) List of Unclassifed Manufacturers – Microcontroller

LM3S6611 Microcontroller
20.2.3
20.2.4
Parameter Parameter Name
Min
f_MOSC
Main oscillator frequency
1
t_{MOSC_per}
Main oscillator period
125
f_{ref_crystal_bypass} Crystal reference using the main oscillator (PLL in BYPASS mode) 1
f_{ref_ext_bypass} External clock reference (PLL in BYPASS mode)
0
f_{system_clock}
System clock
0
Nom
-
-
-
-
-
Max Unit
8 MHz
1000 ns
8 MHz
50 MHz
50 MHz
Table 20-8. Crystal Characteristics
Parameter Name
Value
Units
Frequency
8
6
4
3.5 MHz
Frequency tolerance
±50 ±50 ±50 ±50 ppm
Aging
±5
±5
±5
±5 ppm/yr
Oscillation mode
Parallel Parallel Parallel Parallel
Temperature stability (0 - 85 °C) ±25 ±25 ±25 ±25 ppm
Motional capacitance (typ)
27.8 37.0 55.6 63.5 pF
Motional inductance (typ)
14.3 19.1 28.6 32.7 mH
Equivalent series resistance (max) 120 160 200 220 Ω
Shunt capacitance (max)
10
10
10
10
pF
Load capacitance (typ)
16
16
16
16
pF
Drive level (typ)
100 100 100 100 µW
Analog Comparator
Table 20-9. Analog Comparator Characteristics
Parameter Parameter Name
Min Nom Max Unit
V_OS
V_CM
C_MRR
T_RT
T_MC
Input offset voltage
- ±10 ±25 mV
Input common mode voltage range
Common mode rejection ratio
0 - V_DD-1.5 V
50 -
- dB
Response time
--
1 µs
Comparator mode change to Output Valid - -
10 µs
Table 20-10. Analog Comparator Voltage Reference Characteristics
Parameter Parameter Name
Min Nom Max Unit
R_HR Resolution high range
- V_DD/32 - LSB
R_LR Resolution low range
- V_DD/24 - LSB
A_HR Absolute accuracy high range -
- ±1/2 LSB
A_LR Absolute accuracy low range -
- ±1/4 LSB
I²C
Table 20-11. I²C Characteristics
Parameter No. Parameter Parameter Name
I1^a
t_SCH Start condition hold time
I2^a
t_LP
Clock Low period
Min Nom Max
Unit
36 -
-
system clocks
36 -
-
system clocks
October 09, 2007
443
Preliminary