PT2240B View Datasheet(PDF) - Princeton Technology

Part Name

Description

Manufacturer

PT2240B

Encoder IC

Princeton Technology 

PT2240B

CODE WORD

A group of Code Bits is called a Code Word. A Code Word consists of 20 Address/4 Data Bits followed by one Sync Bit.

Please refer to the diagram below:

A0 A1 A2 A3 …… A16 A17 A18 A19 D3 D2 D1 D0 Sync. bit

SINGLE RESISTOR OSCILLATOR

The built-in oscillator circuit of PT2240B allows a precision oscillator to be constructed by connecting an external resistor

(Rosc) to the OSC Pin. The typical oscillator frequency with various resistor values for PT2240B is given below:

600

500

400

300

200

100

0

15 14 13 12 11 10 9 8 7 6 5 4 3 2.5 2 1.8

Vcc (V)

430K

470K

1M

1.2M

1.5M

2M

2.2M

V1.2

5

September, 2009

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