ST7LITE20F2 STMicroelectronics, ST7LITE20F2 Datasheet - Page 102

• Manufacturer Part Number: ST7LITE20F2
• Description: 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI
• Manufacturer: STMicroelectronics

Specifications of ST7LITE20F2

• 8 Kbytes Single Voltage Flash Program Memory With Read-out Protection, In-circuit Programming And In-application Programming (icp And Iap). 10k Write/erase Cycles Guaranteed, Data Retention: 20 years at 55˚C.
• Clock Sources: Internal 1% RC oscillator, crystal/ceramic resonator or external clock
• Five Power Saving Modes: Halt, Active-Halt, Wait and Slow, Auto Wake Up From Halt

ST7LITE2
CLOCK AND TIMING CHARACTERISTICS (Cont’d)
13.5.3 Crystal and Ceramic Resonator Oscillators
The ST7 internal clock can be supplied with eight
different Crystal/Ceramic resonator oscillators. All
the information given in this paragraph are based
on characterization results with specified typical
external components. In the application, the reso-
nator and the load capacitors have to be placed as
Notes:
1. When PLL is used, please refer to the PLL characteristics chapter and to “SUPPLY, RESET AND CLOCK MANAGE-
MENT” on page 23 chapter (f
2. Resonator characteristics given by the ceramic resonator manufacturer. For more information on these resonators,
please consult www.murata.com
3. SMD = -R0: Plastic tape package (
LEAD = -B0: Bulk
4. () means load capacitor built in resonator
Figure 66. Typical application with a crystal or ceramic resonator
102/133
Supplier
f
C
C
CrOSC
Symbol
L1
L2
WHEN RESONATOR WITH
INTEGRATED CAPACITORS
f
[MHz]
CrOSC
Crystal Oscillator Frequency
Recommended load capacitance ver-
sus equivalent serial resistance of the
crystal or ceramic resonator (R
16
2
4
8
Type
C
LEAD
LEAD
LEAD
LEAD
Typical Ceramic Resonators
SMD
SMD
SMD
SMD
L2
Parameter
3)
C
CrOSC
L1
CSTCC2M00G56-R0
CSTCR4M00G53-R0
CSTCE8M00G52-R0
CSTCE16M0V51-R0
CSTLS4M00G53-B0
CSTLS8M00G53-B0
CSALS16M0X55-B0
CSTLS16M0X53-B0
min. is 8 Mhz with PLL).
∅
RESONATOR
=180mm) .
Reference
R
1)
d
S
)
2)
OSC1
OSC2
Conditions
CL1
[pF]
close as possible to the oscillator pins in order to
minimize output distortion and start-up stabiliza-
tion time. Refer to the crystal/ceramic resonator
manufacturer for more details (frequency, pack-
age, accuracy...).
(47)
(15)
(15)
(10)
(15)
(15)
(5)
7
4)
CL2
[pF]
(47)
(15)
(15)
(10)
(15)
(15)
(5)
7
4)
i
2
1.5k
[Ω]
Rd
Min
0
0
0
0
0
0
0
2
See table below
Supply Voltage
2.4V to 5.5V
3.3V to 5.5V
4.5V to 5.5V
3.8V to 5.5V
Range [V]
ST7LITE2
Typ
f
OSC
Max
16
Temperature
Range [°C]
-40 to 85
MHz
Unit
pF