STM32L152-EVAL STMicroelectronics, STM32L152-EVAL Datasheet - Page 62

• Manufacturer Part Number: STM32L152-EVAL
• Description: BOARD EVALUATION FOR STM32L
• Manufacturer: STMicroelectronics
• Type: MCUr

Specifications of STM32L152-EVAL

• New! Us2012 Catalog Page: STM8L-Discovery_STM32L152-EVAL
• Contents: Board
• Processor To Be Evaluated: STM32L1xxx
• Interface Type: UART
• Operating Supply Voltage: 2 V to 3.6 V
• For Use With/related Products: STM32L
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-10842

Electrical characteristics
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Table 24.
1. Resonator characteristics given by the crystal/ceramic resonator manufacturer.
2. Based on characterization results, not tested in production.
3. The relatively low value of the RF resistor offers a good protection against issues resulting from use in a
4. t
For C
5 pF to 25 pF range (typ.), designed for high-frequency applications, and selected to match
the requirements of the crystal or resonator (see
same size. The crystal manufacturer typically specifies a load capacitance which is the
series combination of C
can be used as a rough estimate of the combined pin and board capacitance) when sizing
C
microcontrollers” available from the ST website www.st.com.
Symbol
I
t
f
DD(HSE)
SU(HSE)
OSC_IN
L1
I
HSE
R
g
humid environment, due to the induced leakage and the bias condition change. However, it is
recommended to take this point into account if the MCU is used in tough humidity conditions.
oscillation is reached. This value is measured for a standard crystal resonator and it can vary significantly
with the crystal manufacturer.
(4)
C
SU(HSE)
m
and C
F
L1
and C
Oscillator frequency
Feedback resistor
Recommended load
capacitance versus
equivalent serial resistance
of the crystal (R
HSE driving current
HSE oscillator power
consumption
Oscillator transconductance
Startup time
is the startup time measured from the moment it is enabled (by software) to a stabilized 8 MHz
L2
. Refer to the application note AN2867 “Oscillator design guide for ST
HSE 1-24 MHz oscillator characteristics
L2
, it is recommended to use high-quality external ceramic capacitors in the
Parameter
L1
S
)
(3)
and C
Doc ID 17659 Rev 4
L2
. PCB and MCU pin capacitance must be included (10 pF
V
DD
V
with 30 pF load
f
f
= 3.3 V, V
OSC
OSC
DD
Conditions
R
C = 20 pF
C = 10 pF
Startup
S
is stabilized
= 16 MHz
= 16 MHz
= 30
IN
Figure
= V
SS
(1)(2)
16). C
Min Typ
3.5
1
STM32L151xx, STM32L152xx
L1
200
20
1
and C
0.46 (stabilized)
0.7 (stabilized)
L2
2.5 (startup)
2.5 (startup)
are usually the
Max
24
3
MHz
Unit
mA
mA
mA
k
ms
pF
/V