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CST12.0MTWA Scheda tecnica(PDF) 118 Page - STMicroelectronics

Il numero della parte CST12.0MTWA
Spiegazioni elettronici  8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES
PDF  153 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

CST12.0MTWA Scheda tecnica(HTML) 118 Page - STMicroelectronics

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ST72334J/N, ST72314J/N, ST72124J
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CLOCK AND TIMING CHARACTERISTICS (Cont’d)
16.5.3.2 Typical Ceramic Resonators
Note:
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).
Figure 69. Application with Ceramic Resonator
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. The oscillator selection can be optimized in terms of supply current using an high quality resonator with small RS value.
Refer to Table 22 and Table 23 and to the ceramic resonator manufacturer’s documentation for more details.
Symbol
Parameter
Conditions
Typ
Unit
tSU(osc)
Ceramic resonator start-up time
LP
2MHz
4.2
ms
MP
4MHz
2.1
MS
8MHz
1.1
HS
16MHz
0.7
OSC2
OSC1
fOSC
CL1
CL2
i2
RF
ST72XXX
RESONATOR
WHEN RESONATOR WITH
INTEGRATED CAPACITORS
RD
RF(EXT)



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