ST62T25CM3 STMicroelectronics, ST62T25CM3 Datasheet - Page 75

• Manufacturer Part Number: ST62T25CM3
• Description: IC MCU 8BIT W/ADC 28-SOIC
• Manufacturer: STMicroelectronics
• Series: ST6r

Specifications of ST62T25CM3

• Core Processor: ST6
• Core Size: 8-Bit
• Speed: 8MHz
• Peripherals: LVD, POR, WDT
• Number Of I /o: 20
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: OTP
• Ram Size: 64 x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 6 V
• Data Converters: A/D 16x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 28-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Connectivity: -

CLOCK AND TIMING CHARACTERISTICS (Cont’d)
11.5.4 RC Oscillator
The ST6 internal clock can be supplied with an external RC oscillator. Depending on the
accuracy of the frequency is about 20%, so it may not be suitable for some applications.
Notes:
1. Data based on characterization results, not tested in production. These measurements were done with the OSCin pin
2. R
Figure 51. Typical Application with RC Oscillator
f
R
Symbol
OSC
unconnected (only soldered on the PCB).
NET
NET
EXTERNAL RC
must have a positive temperature coefficient (ppm/°C), carbon resistors should therefore not be used.
R
RC oscillator frequency
RC Oscillator external resistor
NET
OSC
OSC
NC
IN
OUT
Parameter
1)
C
EX
~9pF DISCHARGE
2)
f
OSC
R
R
R
R
R
R
R
R
R
R
see
NET
NET
NET
NET
NET
NET
NET
NET
NET
NET
Conditions
Figure 52
=22 k
=47 k
=100 k
=220 k
=470 k
=22 k
=47 k
=100 k
=220 k
=470 k
&
V
V
Figure 53
DD
DD
ST6215CM-Auto ST6225CM-Auto
Min
7.2
5.1
3.2
1.8
0.9
3.7
2.8
1.8
0.5
22
1
V
DD
MIRROR
CURRENT
0.95
0.55
Typ
8.6
5.7
3.4
1.9
4.3
1.9
1.1
3
R
Max
ST62XX
NET
6.5
3.8
1.1
4.9
3.3
1.2
0.6
870
10
2
2
value, the
MHz
75/100
Unit
k
1