STM32L152-EVAL STMicroelectronics, STM32L152-EVAL Datasheet - Page 60

• 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
60/107
Low-speed external user clock generated from an external source
The characteristics given in the following table result from tests performed using a low-
speed external clock source, and under ambient temperature and supply voltage conditions
summarized in
Table 23.
1. Guaranteed by design, not tested in production.
Figure 14. Low-speed external clock source AC timing diagram
DuCy
Symbol
C
f
t
t
LSE_ext
V
V
t
t
w(LSE)
w(LSE)
IN(LSE)
r(LSE)
f(LSE)
LSEH
LSEL
I
L
(LSE)
User external clock source
frequency
OSC32_IN input pin high level
voltage
OSC32_IN input pin low level
voltage
OSC32_IN high or low time
OSC32_IN rise or fall time
OSC32_IN input capacitance
Duty cycle
OSC32_IN Input leakage current
Low-speed external user clock characteristics
Table
(1)
9.
Parameter
Doc ID 17659 Rev 4
(1)
(1)
(1)
V
Conditions
SS
 V
D
IN
 V
D
0.7V
TBD
TBD
STM32L151xx, STM32L152xx
Min
V
1
SS
DD
32.768
Typ
0.6
0.3V
1000
TBD
TBD
Max
V
±1
DD
DD
Unit
kHz
µA
pF
ns
%
V