ST6208C STMicroelectronics, ST6208C Datasheet - Page 73

• Manufacturer Part Number: ST6208C
• Description: 8 Bit ST6 Microcontroller with 1x8-bit TIMER
• Manufacturer: STMicroelectronics

Specifications of ST6208C

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

CLOCK AND TIMING CHARACTERISTICS (Cont’d)
10.5.3 Crystal and Ceramic Resonator Oscillators
The ST6 internal clock can be supplied with sever-
al different Crystal/Ceramic resonator oscillators.
Only parallel resonant crystals can be used. All the
information given in this paragraph are based on
Notes:
1. Resonator characteristics given by the crystal/ceramic resonator manufacturer.
2. t
3. The oscillator selection can be optimized in terms of supply current using an high quality resonator with small R
Figure 50. Typical Application with a Crystal or Ceramic Resonator
Oscillator
R
C
C
quick V
Refer to crystal/ceramic resonator manufacturer for more details.
Symbol
F
L1
L2
SU(OSC)
DD
is the typical oscillator start-up time measured between V
ramp-up from 0 to 5V (<50μs).
Feedback resistor
Recommended load capacitances versus equiva-
lent crystal or ceramic resonator frequency
CSB455E
CSB1000J
CSTCC2.00MG0H6
CSTCC4.00MG0H6
CSTCC8.00MG
C
C
Reference
L1
L2
RESONATOR
Parameter
Typical Crystal or Ceramic Resonators
455KHz Δf
1MHz
2MHz
4MHz
8MHz
Freq.
OSC
OSC
Δf
Δf
Δf
Δf
IN
OUT
OSC
OSC
OSC
OSC
OSC
=[±0.5KHz
=[±0.5KHz
=[±0.5%
=[±0.5%
=[±0.5%
R
F
characterization results with specified typical ex-
ternal components. Refer to the crystal/ceramic
resonator manufacturer for more details (frequen-
cy, package, accuracy...).
tolerance
tolerance
tolerance
tolerance
tolerance
Characteristic
f
f
f
f
f
OSC
OSC
OSC
OSC
OSC
ST6208C/ST6209C/ST6210C/ST6220C
DD
V
,±0.5%
,±0.3%
,±0.3%
=32 kHz,
=1 MHz
=2 MHz
=4 MHz
=8 MHz
DD
=2.8V and the fetch of the first instruction (with a
,±0.3%
,±0.3%
Conditions
ΔTa
ΔTa
ΔTa
ΔTa
ΔTa
,±0.3%
,±0.3%
,±0.3%
1)
,±0.5%
,±0.5%
aging
aging
aging
aging
aging
]
]
]
]
]
[pF]
C
220 220
100 100
47
47
15
Typ
120
L1
47
33
33
22
3
[pF]
C
ST62XX
47
47
15
L2
F
OSC
t
S
[ms]
SU(osc)
Unit
73/104
MΩ
pF
value.
1)
1