參數(shù)資料
型號: ST72124J2T
廠商: 意法半導體
英文描述: 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, SCI INTERFACES
中文描述: 8位單電壓閃存,ADC和16位定時器,SPI和脊髓損傷界面微控制器
文件頁數(shù): 118/153頁
文件大?。?/td> 1533K
代理商: ST72124J2T
ST72334J/N, ST72314J/N, ST72124J
118/153
CLOCK AND TIMING CHARACTERISTICS
(Cont’d)
16.5.3.2 Typical Ceramic Resonators
Note:
t
is the typical oscillator start-up time measured between V
DD
=2.8V and the fetch of the first instruction (with a
quick V
DD
ramp-up from 0 to 5V (<50
μ
s).
Figure 69. Application with Ceramic Resonator
Notes:
1. Resonator characteristics given by the ceramic resonator manufacturer.
2.
t
is the typical oscillator start-up time measured between V
DD
=2.8V and the fetch of the first instruction (with a
quick V
DD
ramp-up from 0 to 5V (<50
μ
s).
3. The oscillator selection can be optimized in terms of supply current using an high quality resonator with small R
S
value.
Refer to
Table 22
and
Table 23
and to the ceramic resonator manufacturer’s documentation for more details.
Symbol
Parameter
Conditions
Typ
4.2
2.1
1.1
0.7
Unit
t
SU(osc)
Ceramic resonator start-up time
LP
MP
MS
HS
2MHz
4MHz
8MHz
16MHz
ms
OSC2
OSC1
f
OSC
C
L1
C
L2
i
2
R
F
ST72XXX
RESONATOR
WHEN RESONATOR WITH
INTEGRATED CAPACITORS
R
D
R
F(EXT)
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