st62t65cm3 STMicroelectronics, st62t65cm3 Datasheet - Page 22

• Manufacturer Part Number: st62t65cm3
• Description: 8-bit Otp/eprom Mcus With A/d Converter, Safe Reset, Auto-reload Timer, Eeprom And Spi
• Manufacturer: STMicroelectronics

ST62T55C ST62T65C/E65C
CLOCK SYSTEM (Cont’d)
Figure 11. Clock Circuit Block Diagram
Figure 12. Maximum Operating Frequency (f
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 f
3. When the OSG is disabled, operation in this
22/86
OSCILLATOR
MAIN
8
7
6
5
4
3
2
1
Maximum FREQUENCY (MHz)
2.5
3
4
OSG Min.
LFAO
OSG
3.6
SUPPLY VOLTAGE (V
Main Oscillator off
MAX
4
) versus Supply Voltage (V
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 f
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 f
4.5
M
U
X
DD
)
3
2
1
f
5
INT
f
f
OSG
OSG
f
OSG
OSCILLATOR
Min (at 85°C)
Min (at 125°C)
RS0,RS1
DIVIDER
5.5
DD
)
: 12
: 13
: 1
6
POR
Core
TIMER 1
Watchdog
VR01807J
OSG.
OSG.