TC1796 Datasheet, PDF (102/134 Pages) Infineon Technologies AG – 32-Bit Single-Chip Microcontroller TriCore

TC1796
4.2.4 Oscillator Pins
Electrical Parameters
Table 18 Oscillator Pins Characteristics (Operating Conditions apply)
Parameter
Symbol
Min.
Values
Typ. Max.
Unit Note /
Test Condition
Frequency Range
Input low voltage at
XTAL1¹⁾
Input high voltage at
XTAL1¹⁾
Input current at
XTAL1
f_OSC CC 4
–
V_ILX SR -0.2
–
V_IHX SR 0.7 × –
V_DDOSC3
I_IX1 CC –
–
25
MHz –
0.3 × V –
V_DDOSC3
V_DDOSC3 V
–
+ 0.2
±25
µA 0 V < V_IN < V_DDOSC3
1) If the XTAL1 pin is driven by a crystal, reaching a minimum amplitude (peak-to-peak) of 0.3 × V_DDOSC3 is
necessary.
Note: It is strongly recommended to measure the oscillation allowance (negative
resistance) in the final target system (layout) to determine the optimal parameters
for the oscillator operation. Please refer to the limits specified by the crystal
supplier.
Data Sheet
102
V1.0, 2008-04