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ST72521 Datasheet(PDF) 174 Page - STMicroelectronics

No. de pieza ST72521
Descripción Electrónicos  8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C, CAN INTERFACE
PDF  211 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72521 Datasheet(HTML) 174 Page - STMicroelectronics

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CLOCK AND TIMING CHARACTERISTICS (Cont’d)
Notes:
1. Resonator characteristics given by the ceramic resonator manufacturer.
2. tSU(OSC) is the typical oscillator start-up time measured between VDD=2.8V and the fetch of the first instruction (with a
quick VDD ramp-up from 0 to 5V (<50µs).
3. Resonators all have different characteristics. Contact the manufacturer to obtain the appropriate values of external
components and to verify oscillator performance.
4. 3rd overtone resonators require specific validation by the resonator manufacturer.
Oscil.
Typical Ceramic Resonators (information for guidance only)
CL1
[pF]
CL2
[pF]
tSU(osc)
[ms] 2)
Reference3)
Freq.
Characteristic 1)
LP
CSA2.00MG
2MHz
∆f
OSC=[±0.5%tolerance,±0.3%
∆Ta,±0.3%aging,±x.x%correl]22
22
4
MP
CSA4.00MG
4MHz
∆f
OSC=[±0.5%tolerance,±0.3%
∆Ta,±0.3%aging,±x.x%correl]22
22
2
MS
CSA8.00MTZ
8MHz
∆f
OSC=[±0.5%tolerance,±0.5%
∆Ta,±0.3%aging,±x.x%correl]33
33
1
HS
CSA16.00MXZ0404)
16MHz
∆f
OSC=[±0.5%tolerance,±0.3%
∆Ta,±0.3%aging,±x.x%correl] 33
33
0.7



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