ST6225C STMicroelectronics, ST6225C Datasheet - Page 76

• Manufacturer Part Number: ST6225C
• Description: 8 Bit ST6 Microcontroller with 16x8-bitADC 1x8-bit TIMER
• Manufacturer: STMicroelectronics

Specifications of ST6225C

• Clock Sources: crystal/ceramic resonator or RC network, external clock, backup oscillator (LFAO)
• 2 Power Saving Modes: Wait and Stop

ST6215C ST6225C
CLOCK AND TIMING CHARACTERISTICS (Cont’d)
Figure 52. Typical RC Oscillator frequency vs.
V
11.5.5 Oscillator Safeguard (OSG) and Low Frequency Auxiliary Oscillator (LFAO)
Figure 54. Typical LFAO Frequencies
Note:
1. Data based on characterization results.
76/105
1
f
f
DD
LFAO
OSG
Symbol
fosc [MHz]
12
10
4
8
6
2
0
3
Low Frequency Auxiliary Oscillator
Frequency
Internal Frequency with OSG ena-
bled
Rnet=22KOhm
Rnet=47KOhm
Rnet=100KOhm
Rnet=220KOhm
Rnet=470KOhm
4
1)
Parameter
VDD [V]
fosc [kHz]
600
500
400
300
200
100
0
5
3
Ta=-40°C
Ta=25°C
Ta=125°C
T
T
T
T
A
A
A
A
6
=25° C, V
=25° C, V
=25° C, V
=25° C, V
4
Conditions
VDD [V]
Figure 53. Typical RC Oscillator frequency vs.
Temperature (V
DD
DD
DD
DD
fosc [MHz]
10
4
=5.0 V
=3.3 V
=4.5 V
=3.3 V
8
6
2
0
-40
5
Min
200
DD
86
4
2
Rnet=22KOhm
Rnet=47KOhm
Rnet=100KOhm
Rnet=220KOhm
Rnet=470KOhm
6
25
= 5V)
Ta [°C]
Typ
350
150
95
Max
800
340
MHz
125
Unit
kHz