ELM460 Ver la hoja de datos (PDF) - Elm Electronics

Número de pieza

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Fabricante

ELM460

Impossible Oscillator

Elm Electronics 

ELM460

Pin Descriptions

VDD (pin 1)

This pin is the positive supply pin, and should

always be the most positive point in the circuit.

Internal circuitry connected to this pin is used to

provide power on reset of the microprocessor, so

an external reset signal is not required. Refer to

the Electrical Characteristics section for further

information.

P1 (pin 2) and P0 (pin 3)

These two pins are used to select the base

period for oscillation. P1 is the most significant

bit, and P0 is the least. See the chart on page 1

for possible states of P1 and P0, and the

resulting periods.

M1 (pin 4) and M0 (pin 5)

These two pins determine the multiplier that

should be applied to the base period in order to

determine the actual period of oscillation. Values

of 0.1, 1, 10 and 100 are possible as shown in

the chart on page 1.

Out (pin 6) and Out (pin 7)

These are the two output pins. Pin 6 is normally

held at a logical high level, and pin 7 at a logical

low. Each pin reverses its state for a period of

50ms at the beginning of each timing cycle,

independent of the overall period selected.

VSS (pin 8)

Circuit common is connected to this pin. This is

the most negative point in the circuit.

Ordering Information

These integrated circuits are available in either the 300 mil plastic DIP format, or in the 200 mil SOIC surface

mount type of package. To order, add the appropriate suffix to the part number:

300 mil Plastic DIP............................... ELM460P

200 mil SOIC..................................... ELM460SM

Absolute Maximum Ratings

Storage Temperature....................... -65°C to +150°C

Ambient Temperature with

Power Applied....................................-40°C to +85°C

Voltage on VDD with respect to VSS............ 0 to +7.5V

Voltage on any other pin with

respect to VSS........................... -0.6V to (VDD + 0.6V)

Note:

Stresses beyond those listed here will likely damage

the device. These values are given as a design

guideline only. The ability to operate to these levels

is neither inferred nor recommended.

All rights reserved. Copyright ©1999 Elm Electronics.

Every effort is made to verify the accuracy of information provided in this document, but no representation or warranty can be

given and no liability assumed by Elm Electronics with respect to the accuracy and/or use of any products or information

described in this document. Elm Electronics will not be responsible for any patent infringements arising from the use of these

products or information, and does not authorize or warrant the use of any Elm Electronics product in life support devices and/or

systems. Elm Electronics reserves the right to make changes to the device(s) described in this document in order to improve

reliability, function, or design.

ELM460DSB

Elm Electronics – Circuits for the Hobbyist

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