參數(shù)資料
型號: ST62T03CM6E
廠商: STMICROELECTRONICS
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDSO16
封裝: 0.300 INCH, LEAD FREE, PLASTIC, SOP-16
文件頁數(shù): 69/100頁
文件大?。?/td> 1440K
代理商: ST62T03CM6E
ST6200C/ST6201C/ST6203C
70/100
CLOCK AND TIMING CHARACTERISTICS (Cont’d)
11.5.4 RC Oscillator
The ST6 internal clock can be supplied with an external RC oscillator. Depending on the RNET value, the
accuracy of the frequency is about 20%, so it may not be suitable for some applications.
Notes:
1. Data based on characterization results, not tested in production. These measurements were done with the OSCin pin
unconnected (only soldered on the PCB).
2. RNET must have a positive temperature coefficient (ppm/°C), carbon resistors should therefore not be used.
Figure 45. Typical Application with RC Oscillator
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fOSC
RC oscillator frequency 1)
4.5
V
≤V
DD
≤6.
0V
RNET=22 k
RNET=47 k
RNET=100 k
RNET=220 k
RNET=470 k
7.2
5.1
3.2
1.8
0.9
8.6
5.7
3.4
1.9
0.95
10
6.5
3.8
2
1.1
MHz
3V
≤V
DD
≤3.6V
RNET=22 k
RNET=47 k
RNET=100 k
RNET=220 k
RNET=470 k
3.7
2.8
1.8
1
0.5
4.3
3
1.9
1.1
0.55
4.9
3.3
2
1.2
0.6
RNET
RC Oscillator external resistor 2)
22
870
k
OSCIN
OSCOUT
RNET
EXTERNAL RC
CEX~9pF DISCHARGE
ST62XX
VDD
fOSC
VDD
NC
MIRROR
CURRENT
1
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