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ELM621 - SERIAL 3-BIT PORT

Description

The ELM621 is a serially controlled, three bit parallel I/O port in an 8 pin package.

The high level of integration employed means that very few external components are required in order to construct a fully functional circuit with this IC.

Features

  • that many users will appreciate. The provision of a 16 byte buffer allows commands to be chained and executed sequentially with one key stroke. The controllable pullup resistor on the bit 3 port pin is particularly helpful when interfacing to mechanical switches, while the ability to control character echo reduces overhead while operating under computer control. Naturally, individual as well as simultaneous read, set, clear and toggle commands are also supported. All communications with this dev.

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Datasheet preview – ELM621

Datasheet Details

Part number ELM621
Manufacturer ELM Electronics
File Size 28.66 KB
Description SERIAL 3-BIT PORT
Datasheet download datasheet ELM621 Datasheet
Additional preview pages of the ELM621 datasheet.

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Full PDF Text Transcription

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ELM621 Serial Three Bit Port Description The ELM621 is a serially controlled, three bit parallel I/O port in an 8 pin package. The high level of integration employed means that very few external components are required in order to construct a fully functional circuit with this IC. The ELM621 offers several convenient features that many users will appreciate. The provision of a 16 byte buffer allows commands to be chained and executed sequentially with one key stroke. The controllable pullup resistor on the bit 3 port pin is particularly helpful when interfacing to mechanical switches, while the ability to control character echo reduces overhead while operating under computer control. Naturally, individual as well as simultaneous read, set, clear and toggle commands are also supported.
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