stm8af6199 STMicroelectronics, stm8af6199 Datasheet - Page 67

• Manufacturer Part Number: stm8af6199
• Description: Automotive 8-bit Mcu, With Up To 128 Kbytes Flash, Eeprom, 10-bit Adc, Timers, Lin, Can, Usart, Spi, I 2c, 3 V To 5.5 V
• Manufacturer: STMicroelectronics

STM8AF61xx, STM8AF51xx
11.3.2
External clock sources and timing characteristics
HSE user external clock
Subject to general operating conditions for V
Table 24.
1. In case of CSS, the external clock must have a frequency above 500 kHz.
Figure 17. 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 start-up stabilization time. Refer to the crystal resonator manufacturer for more details
(frequency, package, accuracy...).
I
LEAK_HSE
V
Symbol
f
HSE_ext
V
V
HSEdHL
HSEH
HSEL
V
V
HSEH
HSEL
User external clock source
frequency
Comparator hysteresis
OSCIN input pin high level
voltage
OSCIN input pin low level
voltage
OSCIN input leakage
current
HSE user external clock characteristics
External clock
source
Parameter
OSCIN
T
T
V
A
A
SS
Conditions
< 105 °C
> 105 °C
< V
DD
IN
< V
and T
DD
A
.
0.1 x V
0.7 x V
Min
V
0
0
-1
(1)
(1)
SS
f
HSE
DD
DD
STM8A
Electrical characteristics
Typ
0.3 x V
Max
V
24
16
+1
DD
DD
67/100
MHz
Unit
µA
V
V