ST6208CM1/XXX Просмотр технического описания (PDF) - STMicroelectronics

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ST6208CM1/XXX

8-BIT OTP/EPROM MCUs WITH A/D CONVERTER, OSCILLATOR SAFEGUARD, SAFE RESET AND 20 PINS

STMicroelectronics 

ST62T08C/T09C ST62T10C/T20C/E20C

CLOCK SYSTEM (Cont’d)

Figure 11. Clock Circuit Block Diagram

MAIN

OSCILLATOR

OSG

POR

: 13

Core

TIMER 1

M

U

fINT

: 12

Watchdog

X

LFAO

:1

Main Oscillator off

Figure 12. Maximum Operating Frequency (fMAX) versus Supply Voltage (VDD)

Maximum FREQUENCY (MHz)

8

7

4

6

5

4

3

fOSG

2

fOSG Min

3

2

1

1

2.5

3

3.6

4

4.5

5

5.5

6

SUPPLY VOLTAGE (VDD)

VR01807

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.

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