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ST62T28C датащи(PDF) 18 Page - STMicroelectronics

номер детали ST62T28C
подробное описание детали  8-BIT MCUs WITH A/D CONVERTER, AUTO-RELOAD TIMER, UART, OSG, SAFE RESET AND 28-PIN PACKAGE
PDF  84 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST62T28C датащи(HTML) 18 Page - STMicroelectronics

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ST62T28C/E28C
CLOCK SYSTEM (Cont’d)
Figure 11. Clock Circuit Block Diagram
Figure 12. Maximum Operating Frequency (fMAX) versus Supply Voltage (VDD)
Notes:
1. In this area, operation is guaranteed at the
quartz crystal frequency.
2. When the OSG is disabled, operation in this
area is guaranteed at the crystal frequency. When
the OSG is enabled, operation in this area is guar-
anteed at a frequency of at least fOSG Min.
3. When the OSG is disabled, operation in this
area is guaranteed at the quartz crystal frequency.
When the OSG is enabled, access to this area is
prevented. The internal frequency is kept a fOSG.
4. When the OSG is disabled, operation in this
area is not guaranteed
When the OSG is enabled, access to this area is
prevented. The internal frequency is kept at fOSG.
MAIN
OSCILLATOR
OSG
LFAO
M
U
X
Core
:13
:12
:1
TIMER 1
Watchdog
POR
fINT
Main Oscillator off
1
2.5
3.6
4
4.5
5
5.5
6
8
7
6
5
4
3
2
Maximum FREQU ENCY (MHz)
SUPPLY VOLTAGE (VDD)
3
4
3
2
1
fOSG
fOSG Min (at 85°C)
VR01807J
fOSG Min (at 125°C)
18



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