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ST7LITE49M 数据表(PDF) 155 Page - STMicroelectronics

部件名 ST7LITE49M
功能描述  8-bit MCU with single voltage Flash memory data EEPROM, ADC, 8/12-bit timers, and I²C interface
PDF  188 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ST7LITE49M 数据表(HTML) 155 Page - STMicroelectronics

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ST7LITE49M
Electrical characteristics
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13.6.1
Auto Wake Up from Halt oscillator (AWU)
13.6.2
Crystal and ceramic resonator oscillators
The ST7 internal clock can be supplied with ten different Crystal/Ceramic resonator
oscillators. All the information given in this paragraph are based on characterization results
with specified typical external components. In the application, the resonator and the load
capacitors have to be placed as close as possible to the oscillator pins in order to minimize
output distortion and start-up stabilization time. Refer to the crystal/ceramic resonator
manufacturer for more details (frequency, package, accuracy...).
Figure 73.
Typical application with a crystal or ceramic resonator
Table 80.
AWU from Halt characteristics
Symbol
Parameter(1)
1.
Guaranteed by Design. Not tested in production.
Conditions
Min
Typ
Max
Unit
fAWU
AWU Oscillator
Frequency
16
32
64
kHz
tRCSRT
AWU Oscillator startup
time
50
µs
Table 81.
Crystal/ceramic resonator oscillator characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fCrOSC
Crystal Oscillator Frequency
2
16
MHz
CL1
CL2
Recommended load capacitance
versus equivalent serial
resistance of the crystal or
ceramic resonator (RS)
TBD(1)
1.
TBD stands for ‘to be determined’.
pF
OSC2
OSC1
fOSC
CL1
CL2
i2
ST7LITE49M
RESONATOR
WHEN RESONATOR WITH
INTEGRATED CAPACITORS
Rd



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