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PT6302

VFD Driver/Controller IC with Character RAM

Princeton Technology 

PT6302

FUNCTION DESCRIPTION

OSCILLATION CIRCUIT

An oscillation circuit may be constructed by connecting external Resistor (R1) and Capacitor (C1) between the oscillator

pins -- OSCO and OSCI. The RC time constant depends on the value of VDD voltage used. The target oscillation

frequency is 2MHz. Please refer to the diagram below.

RESET FUNCTION

The Reset Function is enabled when the RSTB Pin is set to "Low" Level. All functions are initialized. The initial status of

the various functions is given below:

1. Address of each RAM: Address "00"H

2. Data of each RAM: All contents are undefined.

3. General Output Ports: All General Output Ports are set to "LOW".

4. Display Digit: 16 Digits

5. Contrast Adjustment: 8/16

6. All Display Lights: OFF Mode

7. Segment Output: All Segment Outputs are set to "LOW".

8. AD Output: All AD Outputs are set to "LOW".

The RSTB Pin may be connected to either the microcontroller or an external Resistor and capacitor. For an external RC

connection, please refer to the diagram below.

V2.1

5

August 2010

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