TC1762 Datasheet, PDF (90/114 Pages) Infineon Technologies AG – 32-Bit Single-Chip Microcontroller TriCore

TC1762
Preliminary
Electrical Parameters
4.2.4 Oscillator Pins
Table 4-8 provides the characteristics of the oscillator pins in the TC1762.
Table 4-8 Oscillator Pins Characteristics (Operating Conditions apply)
Parameter
Symbol
Limit values
Unit Test Conditions
Min.
Max.
Frequency Range
f_OSC CC 4
25
MHz –
Input low voltage at
XTAL1¹⁾
V_ILX SR -0.2
0.3 ×
V–
V_DDOSC3
Input high voltage at V_IHX SR 0.7 ×
V_DDOSC3
V
–
XTAL1¹⁾
V_DDOSC3 + 0.2
Input current at XTAL1 I_IX1 CC –
±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
86
V1.0, 2008-04