STM32L082KB datasheet(73/132 Pages) STMICROELECTRONICS

部件名	STM32L082KB

功能描述	Ultra-low-power 32-bit MCU Arm®-based Cortex®-M0, up to 192KB Flash, 20KB SRAM, 6KB EEPROM, USB, ADC, DACs, AES

PDF	132 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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73 / 132 page

DS10688 Rev 7

73/132

STM32L082xx

Electrical characteristics

109

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.

Figure 17. Low-speed external clock source AC timing diagram

Table 41. Low-speed external user clock characteristics(1)

1. Guaranteed by design, not tested in production

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fLSE_ext

User external clock source

frequency

32.768

1000

kHz

VLSEH

OSC32_IN input pin high level

voltage

VDD

VLSEL

OSC32_IN input pin low level

voltage

VSS

tw(LSE)

OSC32_IN high or low time

465

tr(LSE)

tf(LSE)

OSC32_IN rise or fall time

CIN(LSE) OSC32_IN input capacitance

0.6

DuCy(LSE) Duty cycle

OSC32_IN Input leakage current

VSS ≤VIN ≤VDD

±1

µA

ai18233c

OSC32_IN

EXTER NAL

STM32Lxx

CLOCK SOURC E

VLSEH

tf(LSE)

tW(LSE)

90%

10%

TLSE

tr(LSE)

tW(LSE)

fLSE_ext

VLSEL

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