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ST10F276Z5 Datasheet(PDF) 204 Page - STMicroelectronics

Part # ST10F276Z5
Description  16-bit MCU with MAC unit, 832 Kbyte Flash memory and 68 Kbyte RAM
PDF  239 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST10F276Z5 Datasheet(HTML) 204 Page - STMicroelectronics

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Electrical characteristics
ST10F276Z5
204/239
Figure 54.
Crystal oscillator and resonator connection diagram
The given values of CA do not include the stray capacitance of the package and of the
printed circuit board: The negative resistance values are calculated assuming additional
5 pF to the values in the table. The crystal shunt capacitance (C0), the package and the
stray capacitance between XTAL1 and XTAL2 pins is globally assumed equal to 4 pF.
The external resistance between XTAL1 and XTAL2 is not necessary, since already present
on the silicon.
23.8.14
32 kHz Oscillator specifications
Conditions: VDD = 5 V ±10%, TA = –40 / +125 °C
Table 101.
Negative resistance (absolute min. value @125oC / VDD = 4.5 V)
CA (pF)
12
15
18
22
27
33
39
47
4 MHz
460
Ω
550
Ω
675
Ω
800
Ω
840
Ω
1000
Ω
1180
Ω
1200
Ω
8 MHz
380
Ω
460
Ω
540
Ω
640
Ω
580
Ω
--
-
12 MHz
370
Ω
420
Ω
360
Ω
--
--
-
CA
CA
Crystal
Resonator
ST10F276Z5
ST10F276Z5
Table 102.
32 kHz Oscillator specifications
Symbol
Parameter
Conditions
Value
Unit
Min.
Typ.
Max.
gm32
Oscillator (1)
1.
At power-on a high current biasing is applied for faster oscillation start-up. Once the oscillation is started,
the current biasing is reduced to lower the power consumption of the system.
Start-up
20
31
50
µA/V
Normal run
8
17
30
VOSC32
Oscillation amplitude (2))
2.
Not 100% tested, guaranteed by design characterization.
Peak to peak
0.5
1.0
2.4
V
VAV32
Oscillation voltage level (2)
Sine wave middle
0.7
0.9
1.2
tSTUP32
Oscillator start-up time(2)
Stable VDD
–15
s



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