EFM32-TG822F32-SK Energy Micro, EFM32-TG822F32-SK Datasheet - Page 23

• Manufacturer Part Number: EFM32-TG822F32-SK
• Description: MCU, MPU & DSP Development Tools TG822 Sample Kit
• Manufacturer: Energy Micro

Specifications of EFM32-TG822F32-SK

• Processor To Be Evaluated: EFM32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.9.2 HFXO
3.9.3 LFRCO
2012-02-27 - EFM32TG822FXX - d0052_Rev0.95
Table 3.11. HFXO
Table 3.12. LFRCO
Symbol
f
ESR
g
C
DC
I
t
Symbol
f
t
I
TUNESTEP
FRCO
HFXO
HFXO
HFXO
LFRCO
LFRCO
LFRCO
mHFXO
HFXOL
HFXO
HFXO
L-
Parameter
Supported nominal crystal
Frequency
Supported crystal equiv-
alent series resistance
(ESR)
The transconductance of
the HFXO input transistor
at crystal startup
Supported crystal external
load range
Duty cycle
Current consumption for
HFXO after startup
Startup time
Parameter
Oscillation frequency ,
V
Startup time not including
software calibration
Current consumption
Frequency step for LSB
change in TUNING value
DD
= 3.0 V, T
AMB
=25°C
Condition
Crystal frequency 32 MHz
Crystal frequency 4 MHz
HFXOBOOST in CMU_CTRL
equals 0b11
4 MHz: ESR=400 Ohm,
C
CMU_CTRL equals 0b11
32 MHz: ESR=30 Ohm,
C
CMU_CTRL equals 0b11
32 MHz: ESR=30 Ohm,
C
CMU_CTRL equals 0b11
Condition
L
L
L
=20 pF, HFXOBOOST in
=10 pF, HFXOBOOST in
=10 pF, HFXOBOOST in
...the world's most energy friendly microcontrollers
23
Min
Min
20
46
4
5
Typ
Typ
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400
165
400
150
190
1.5
30
50
85
32
Max
Max
1500 Ohm
32 MHz
60 Ohm
25 pF
54 %
Unit
mS
µA
µA
µs
Unit
kHz
µs
nA
%