ST62T35B ST Microelectronics, ST62T35B Datasheet - Page 21

• Manufacturer Part Number: ST62T35B
• Description: (ST62E35B / ST62T35B) 8-BIT OTP/EPROM MCUs
• Manufacturer: ST Microelectronics

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
OSCILLATOR
MAIN
8
7
6
5
4
3
2
1
Maximum FREQUENCY (MHz)
2.5
3
OSG Min.
LFAO
OSG
3.5
4
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
5
f
OSG
f
OSG
f
INT
Min
5.5
DD
: 12
: 13
: 6
: 1
)
ST62T35B/E35B
6
ARTIMER 16
POR
Core
TIMER 1
Watchdog
M
U
X
VR01807
ADC
OSG.
OSG.
21/82
20