Datasheet > FT629

FT629

更新时间： 2024-02-25 18:40:01

品牌	Logo	应用领域
其他 - ETC		开关
页数	文件大小	规格书
2页	99K
描述
Switch Detection Chip

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中文翻译

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数据手册

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FT629 数据手册

FT629 ‘Otter’

Switch Detection Chip

General Description:

Operation:

The FT629 is a switch detection chip. It will

detect a change on any of its five input pins and

send one byte out of the TX pin. The output

byte’s lower five bits correspond to the state of

the input pins 1-5.

The operation of the FT629 is very simple. It

will transmit one byte each time there is a

change on one of its input pins.

There is some debouncing built into the FT629.

It will detect a change on the input pins and then

send out one byte. Therefore, there will be a

4.16 ms delay after a change is detected before it

will check for another pin change.

Figure 1: FT629 pin out

Although the FT629 was designed to read switch

inputs, it has other possible uses such as

detecting the outputs from comparators and logic

circuits.

Description of Output:

Applications:

A single byte is output by the FT629 whenever

the status of one of its input pins has changed.

The status of each pin is encoded into the lower

five bits of the output byte, according to Figure

The FT629 was designed specifically to aid in

the making of a robot using a portable electronic

device that has a serial port (e.g., HP48, Palm

Pilot, BASIC Stamp, etc.).

Figure 2: Output Byte Organization

Pin5 Pin4 Pin3 Pin2 Pin1

Bit7 Bit6 Bit5 Bit4

Bit3

Bit4

Bit5

Bit6

does not matter

Pin[1-5]: 0 = switch open

1 = switch closed

Page: 1

中文翻译

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