ST92185B STMicroelectronics, ST92185B Datasheet - Page 59

• Manufacturer Part Number: ST92185B
• Description: 16k/24k/32k Rom Hcmos Mcu With On-screen-display
• Manufacturer: STMicroelectronics

OSCILLATOR CHARACTERISTICS (Cont’d)
The following table is relative to the fundamental
quartz crystal only; assuming:
– Rs: parasitic series resistance of the quartz crys-
– C0: parasitic capacitance of the crystal (upper
– C1,C2: maximum total capacitance on pins OS-
tal (upper limit)
limit,
CIN/OSCOUT (value including external capaci-
tance tied to the pin plus the parasitic
capacitance of the board and device).
7 pF)
ST92185B - RESET AND CLOCK CONTROL UNIT (RCCU)
Table 9. Crystal Specification (C0
Legend:
Rs: Parasitic Series Resistance of the quartz crystal (up-
per limit) C0: Parasitic capacitance of the quartz crystal
(upper limit, < 7 pF)
CL1, CL2: Maximum Total Capacitance on pins OSCIN
and OSCOUT (the value includes the external capaci-
tance tied to the pin plus the parasitic capacitance of the
board and of the device)
gm: Transconductance of the oscillator
Note.The tables are relative to the fundamental quartz
crystal only (not ceramic resonator).
Freq.
MHz.
8
4
CL1=CL2=
Rs Max
39 pF
260
65
7 pF)
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