STM8AF6289TAY STMicroelectronics, STM8AF6289TAY Datasheet - Page 66
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STM8AF6289TAY
Manufacturer Part Number
STM8AF6289TAY
Description
8-bit Microcontrollers - MCU 8-Bit Automotive MCU EEPROM 96kb Flash
Manufacturer
STMicroelectronics
Datasheet
1.STM8AF5289TCX.pdf
(110 pages)
Specifications of STM8AF6289TAY
Product Category
8-bit Microcontrollers - MCU
Rohs
yes
Core
STM8A
Data Bus Width
8 bit
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
STM8AF6289TAY
Manufacturer:
STMicroelectronics
Quantity:
10 000
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Electrical characteristics
Table 34.
1. The oscillator needs two load capacitors, C
2. This value is the startup time, measured from the moment it is enabled (by software) until a stabilized 24 MHz oscillation is
Figure 19. HSE oscillator circuit diagram
66/110
C
t
SU(HSE)
Symbol
(C
reached. It can vary with the crystal type that is used.
L1
L1
R
/C
g
R
L
C
m
F
m
L2
* C
m
m
Resonator
(1)
(2)
L2
)/(C
C
O
HSE oscillator characteristics
HSE oscillator critical g
The crystal characteristics have to be checked with the following formula:
Equation 1
where g
Equation 2
Feedback resistor
Recommended load capacitance
Oscillator trans conductance
Startup time
L1
+ C
R
L
C
Co: Shunt capacitance (see crystal specification)
C
m
m
m
L1
L2
: Notional inductance (see crystal specification)
). If C
mcrit
: Notional resistance (see crystal specification)
: Notional capacitance (see crystal specification)
= C
Parameter
L1
can be calculated with the crystal parameters as follows:
L2
= C
= C: Grounded external capacitance
L2
C
C
, C
L1
L2
load
= C
L1
g
Resonator
and C
mcrit
L1/2
m
formula
Doc ID 14395 Rev 9
. Some oscillators have built-in load capacitors, C
L2
=
, to act as load for the crystal. The total load capacitance (C
Conditions
OSCIN
OSCOUT
(
stabilized
2
V
×
DD
—
—
—
Π
is
g
×
m
f
HSE
»
g
mcrit
)
2
×
Min
—
—
—
5
R
m
(
R
g
STM8AF52/62xx, STM8AF51/61xx
2Co
F
m
+
C
Typ
220
2.8
—
—
Current control
)
2
f
HSE
L1
to core
and C
Max
20
—
—
—
L2
.
STM8A
Load
) is
mA/V
Unit
ms
kΩ
pF
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