STM32L151C8U6 STMicroelectronics, STM32L151C8U6 Datasheet - Page 60

• Manufacturer Part Number: STM32L151C8U6
• Description: Microcontrollers (MCU) 32-Bit Arm Cortex M3 64kb UltralowPower
• Manufacturer: STMicroelectronics
• Series: STM32r

Specifications of STM32L151C8U6

• Core: ARM Cortex M3
• Core Processor: ARM® Cortex-M3™
• Core Size: 32-Bit
• Speed: 32MHz
• Connectivity: I²C, IrDA, LIN, SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
• Number Of I /o: 37
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 10K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Data Converters: A/D 16x12b, D/A 2x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-UFQFN Exposed Pad
• Lead Free Status / Rohs Status: Details

Electrical characteristics
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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