參數(shù)資料
型號： ST7FLU05MAE
廠商： STMICROELECTRONICS
元件分類： 微控制器/微處理器
英文描述： 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDSO8
封裝： 0.150 INCH, LEAD FREE, PLASTIC, SOP-8
文件頁數(shù)： 121/124頁
文件大小： 2186K
代理商： ST7FLU05MAE
Obsolete
Product(s)
- Obsolete
Product(s)
Electrical characteristics
ST7LUS5, ST7LU05, ST7LU09
96/124
12.3.1
Internal RC oscillator
The ST7 internal clock can be supplied by an internal RC oscillator (selectable by option byte).
Note:
To improve clock stability and frequency accuracy, it is recommended to place a decoupling
capacitor, typically 100nF, between the VDD and VSS pins as close as possible to the ST7
device.
Table 66.
Internal RC oscillator calibrated at 5.0V
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fRC
Internal RC oscillator
frequency
RCCR = FF (reset value), TA =25°C, VDD = 5V
4.5
MHz
RCCR = RCCR0(1), TA = 25°C, VDD =5V
8
ACCRC
RC resolution
VDD = 5V
(2)
-2
+2
%
Accuracy of internal RC
oscillator with
RCCR = RCCR0(1)
TA = -40°C to +125°C, VDD = 5V
-7
+7
TA = -40°C to +125°C, VDD =4.5 to 5.5V
(2)
-8
+9
IDD(RC)
RC oscillator current
consumption
TA = 25°C, VDD = 5V
900(3)
A
tsu(RC) RC oscillator setup time
TA = 25°C, VDD = 5V
4(3)
s
1.
See Internal RC oscillator adjustment on page 31
2.
Data based on characterization results; not tested in production
3.
Guaranteed by Design
Table 67.
Internal RC oscillator calibrated at 3.3V
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fRC
Internal RC oscillator
frequency
RCCR = FF (reset value), TA = 25°C, VDD = 3.3V
4.4
MHz
RCCR = RCCR1(1), TA = 25°C, VDD =3.3V
8
ACCRC
RC resolution
VDD = 3.3V
(2)
-2
+2
%
Accuracy of internal RC
oscillator with
RCCR = RCCR1(1)
TA = -40°C to +125°C, VDD = 3.3V
-7
+7
TA = -40°C to +125°C, VDD = 3.0 to 3.6V
(2)
-8
+9
IDD(RC)
RC oscillator current
consumption
TA = 25°C, VDD = 3.3V
900(3)
A
tsu(RC) RC oscillator setup time
TA = 25°C, VDD = 3.3V
4(3)
s
1.
See Internal RC oscillator adjustment on page 31
2.
Data based on characterization results; not tested in production
3.
Guaranteed by design
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