ST72521 datasheet(174/211 Pages) STMICROELECTRONICS

Numer części	ST72521

Szczegółowy opis	8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C, CAN INTERFACE

PDF	211 Pages

Scroll/Zoom	100%

Producent	STMICROELECTRONICS [STMicroelectronics]

Strona internetowa	http://www.st.com

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174 / 211 page

ST72521

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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)

CSA2.00MG

2MHz

∆f

OSC=[±0.5%tolerance,±0.3%

∆Ta,±0.3%aging,±x.x%correl]22

CSA4.00MG

4MHz

∆f

OSC=[±0.5%tolerance,±0.3%

∆Ta,±0.3%aging,±x.x%correl]22

CSA8.00MTZ

8MHz

∆f

OSC=[±0.5%tolerance,±0.5%

∆Ta,±0.3%aging,±x.x%correl]33

CSA16.00MXZ0404)

16MHz

∆f

OSC=[±0.5%tolerance,±0.3%

∆Ta,±0.3%aging,±x.x%correl] 33

0.7

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