EFM32WG840F128 Energy Micro, EFM32WG840F128 Datasheet - Page 24

• Manufacturer Part Number: EFM32WG840F128
• Description: ARM Microcontrollers - MCU 128kb flash 32kb RAM
• Manufacturer: Energy Micro

Specifications of EFM32WG840F128

• Rohs: yes
• Core: ARM Cortex M4F
• Processor Series: EFM32WG840
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 48 MHz
• Program Memory Size: 128 KB
• Data Ram Size: 32 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 1.85 V to 3.8 V
• Operating Temperature Range: - 40 C to + 85 C
• Package / Case: QFN-64
• Mounting Style: SMD/SMT

3.9.4 HFRCO
2012-09-11 - EFM32WG840FXX - d0195_Rev1.00
Figure 3.8. Calibrated LFRCO Frequency vs Temperature and Supply Voltage
Table 3.13. HFRCO
Symbol
f
t
I
DC
TUNESTEP
FRCO
HFRCO
HFRCO_settling
HFRCO
HFRCO
40
42
38
36
34
32
30
1.8
H-
2.2
Parameter
Oscillation frequency, V
3.0 V, T
Settling time after start-up
Current consumption
Duty cycle
Frequency step for LSB
change in TUNING value
AMB
2.6
=25°C
Vdd [ V]
3.0
Preliminary
DD
=
3.4
Condition
28 MHz frequency band
21 MHz frequency band
14 MHz frequency band
11 MHz frequency band
7 MHz frequency band
1 MHz frequency band
f
f
f
f
f
f
f
f
HFRCO
HFRCO
HFRCO
HFRCO
HFRCO
HFRCO
HFRCO
HFRCO
-40° C
25° C
85° C
3.8
= 14 MHz
= 28 MHz
= 21 MHz
= 14 MHz
= 11 MHz
= 6.6 MHz
= 1.2 MHz
= 14 MHz
...the world's most energy friendly microcontrollers
24
42
40
38
36
34
30
32
–40
–15
Min
48.5
5
Tem perat ure [ ° C]
Typ
25
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106
6.6
1.2
0.6
0.3
28
21
14
11
93
77
72
63
22
50
45
Max
65
51 %
1.8 V
3 V
3.8 V
Unit
MHz
MHz
MHz
MHz
MHz
MHz
Cycles
µA
µA
µA
µA
µA
µA
%
85