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STM8AF/P63AA bảng dữ liệu(PDF) 68 Page - STMicroelectronics

tên linh kiện STM8AF/P63AA
Giải thích chi tiết về linh kiện  Automotive 8-bit MCU, with up to 128-Kbyte Flash memory, data EEPROM, 10-bit ADC, timers, LIN, USART, SPI, I2C, 3 to 5.5 V
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STM8AF/P63AA bảng dữ liệu(HTML) 68 Page - STMicroelectronics

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Electrical characteristics
STM8AF6388
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DocID031156 Rev 1
10.3.3
External clock sources and timing characteristics
HSE external clock
An HSE clock can be generated by feeding an external clock signal of up to 24 MHz to the
OSCIN pin.
Clock characteristics are subject to general operating conditions for VDD and TA.
Figure 19. HSE external clock source
HSE crystal/ceramic resonator oscillator
The HSE clock can be supplied using a crystal/ceramic resonator oscillator of up to 24 MHz.
All the information given in this paragraph is based on characterization results with specified
typical external components. In the application, the resonator and the load capacitors have
to be placed as close as possible to the oscillator pins in order to minimize output distortion
and startup stabilization time. Refer to the crystal resonator manufacturer for more details
(frequency, package, accuracy...).
Table 29. HSE external clock characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fHSE_ext
User external clock source
frequency
TA = -40 °C to 150 °C
0(1)
-24
MHz
VHSEdHL
Comparator hysteresis
-
0.1 x VDD
--
V
VHSEH
OSCIN high-level input pin
voltage
-
0.7 x VDD
-VDD
VHSEL
OSCIN low-level input pin
voltage
-VSS
-
0.3 x VDD
ILEAK_HSE OSCIN input leakage current
VSS < VIN < VDD
-1
-
+1
µA
1. If CSS is used, the external clock must have a frequency above 500 kHz.
V
HSEH
V HSEL
External clock
source
OSCIN
fHSE
STM8
MS36489V1



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