uPSD3234A, uPSD3234BV, uPSD3233B, uPSD3233BV
Figure 89. External Clock Cycle
Figure 90. Recommended Oscillator Circuits
Note: C1, C2 = 30pF ± 10pF for crystals
For ceramic resonators, contact resonator manufacturer
Oscillation circuit is designed to be used either with a ceramic resonator or crystal oscillator. Since each crystal and ceramic resonator
have their own characteristics, the user should consult the crystal manufacturer for appropriate values of external components.
Figure 91. PSD Module AC Measurement I/O
Waveform
Figure 92. PSD ModuleAC Measurement Load
Circuit
2.01 V
3.0V
Test Point
0V
AI03103b
195
Ω
1.5V
Device
Under Test
C
L
= 30 pF
(Including Scope and
Jig Capacitance)
AI03104b
Table 146. Capacitance
Symbol
C
IN
C
OUT
Parameter
Input Capacitance (for input pins)
Output Capacitance (for input/
output pins)
Test Condition
V
IN
= 0V
V
OUT
= 0V
Typ.
2
4
8
Max.
6
12
Unit
pF
pF
Note: 1. Sampled only, not 100% tested.
2. Typical values are for T
A
= 25°C and nominal supply voltages.
163/170
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