UPSD3233 查看數據表（PDF） - STMicroelectronics

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UPSD3233

Flash Programmable System Devices with 8032 Microcontroller Core and 64 Kbit SRAM

STMicroelectronics 

Figure 89. External Clock Cycle

uPSD3234A, uPSD3234BV, uPSD3233B, uPSD3233BV

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

3.0V

0V

Test Point

1.5V

AI03103b

Device

Under Test

2.01 V

195 Ω

CL = 30 pF

(Including Scope and

Jig Capacitance)

AI03104b

Table 146. Capacitance

Symbol

Parameter

Test Condition

CIN

COUT

Input Capacitance (for input pins)

Output Capacitance (for input/

output pins)

VIN = 0V

VOUT = 0V

Note: 1. Sampled only, not 100% tested.

2. Typical values are for TA = 25°C and nominal supply voltages.

Typ.2

4

8

Max.

6

12

Unit

pF

pF

163/170

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