STM8S103F3P3 Datasheet, PDF (64/113 Pages) STMicroelectronics – Access line, 16 MHz STM8S 8-bit MCU, up to 8 Kbytes Flash, data EEPROM,10-bit ADC, 3 timers, UART, SPI, I2C

Electrical characteristics
STM8S103K3 STM8S103F3 STM8S103F2
(1) _{Data based on characterization results, not tested in production.}
Figure 17: HSE external clocksource
VHSEH
V _HSEL
External clock
source
OSCIN
fHSE
STM8
Symbol
f_HSE
HSE crystal/ceramic resonator oscillator
The HSE clock can be supplied with a 1 to 16 MHz crystal/ceramic resonator oscillator. 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...).
Table 33: HSE oscillator characteristics
Parameter
Conditions
Min Typ Max
External high speed
oscillator frequency
1
16
Unit
MHz
R_F
Feedback resistor
C⁽¹⁾
Recommended load
capacitance⁽²⁾
220
kΩ
20
pF
I_DD(HSE)
HSE oscillator power
consumption
C = 20 pF,
f_OSC = 16 MHz
g_m
Oscillator
transconductance
t_SU(HSE) ⁽⁴⁾ Startup time
C = 10 pF,
f_OSC =16 MHz
5
V_DD is stabilized
1
6 (startup)
1.6 (stabilized)⁽³⁾
6 (startup)
1.2 (stabilized)⁽³⁾
mA
mA/V
ms
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