UPSD3234AV-24U1T STMicroelectronics, UPSD3234AV-24U1T Datasheet - Page 163

• Manufacturer Part Number: UPSD3234AV-24U1T
• Description: Flash Programmable System Devices with 8032 Microcontroller Core and 64Kbit SRAM
• Manufacturer: STMicroelectronics

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Figure 89. External Clock Cycle
Figure 90. Recommended Oscillator Circuits
Note: C1, C2 = 30pF ± 10pF for crystals
Figure 91. PSD Module AC Measurement I/O
Waveform
Table 146. Capacitance
Note: 1. Sampled only, not 100% tested.
Symbol
C
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.
C
2. Typical values are for T
OUT
3.0V
IN
0V
Input Capacitance (for input pins)
Output Capacitance (for input/
output pins)
Test Point
Parameter
A
= 25°C and nominal supply voltages.
1.5V
uPSD3234A, uPSD3234BV, uPSD3233B, uPSD3233BV
AI03103b
Test Condition
V
V
OUT
IN
Figure 92. PSD ModuleAC Measurement Load
Circuit
= 0V
= 0V
Under Test
Device
Typ.
4
8
2
2.01 V
195
C
(Including Scope and
Jig Capacitance)
L
= 30 pF
Max.
12
6
AI03104b
Unit
pF
pF
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