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  4. Digital input/output LFYB series dedicated expansion board 56bit DIO board (YHA21) LFYBEX21 (L&F Co., Ltd.)
Digital input/output LFYB series dedicated expansion board 56bit DIO board (YHA21) LFYBEX21-LFYBEX21
Digital input/output LFYB series dedicated expansion board 56bit DIO board (YHA21) LFYBEX21-L&F Co., Ltd.

Digital input/output LFYB series dedicated expansion board 56bit DIO board (YHA21) LFYBEX21
L&F Co., Ltd.

About This Product

Expansion board exclusively for the LFYB series. Implements two PPI (8255) and can expand DIO with TTL level 48 bits. Up to 4 boards can be stacked together. Compatible boards include LFYBH82238/H82633/SH7044/SH7047.

■Note

This board is the same product that was developed and sold by the former Yellow Soft Co., Ltd., which went out of business, as a prototype and for learning purposes, and which our company continues to produce. This is a product that originally did not have environment-related parameters such as RoHS, and we are unable to provide it, so please be aware of this before considering it.

■Product features

This is an I/O board with a total of 56 bits, input 32 bits TTL level, output 24 bits open collector. Access is in 8-bit units. Use the PC/104 connector on top of the CPU board. Up to four boards can be stacked, and even when stacked, the CPU signal line remains on top of the I/O. a) One board can control 32-bit input and 24-bit output I/O. Solder the pin header to the CPU board and stack it on top of it. b) Board addresses can be set using dip switches, and I/O control can be performed by stacking up to 4 boards (input 128 bits, output 96 bits) by dividing the addresses. c) All input ports are pulled up with 22KΩ. d) All output ports are single transistor open collector. Toshiba TD62083APG (Maximum withstand voltage 50V, maximum output current 200mA, changed to TD62083APG due to discontinuation of TD62593AP) Used. e) The input connector is 34 pins, and the output connector is 26 pins, which prevents incorrect insertion.

■I/O connector

All ports are pulled up to 22KΩ on the board. CN1 32-bit input port 2.54mm pitch 2 rows x 17 = 34 pins on-board connector Right angle type pin header HIF3FC-34PA-2.54DS Compatible socket HIF3BA-34D-2.54R (with guide to prevent incorrect insertion) or HIF3BA-34D-2.54R-CL (with pull-out tab) etc. All manufactured by Hirose Electric Co., Ltd.

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    Digital input/output LFYB series dedicated expansion board 56bit DIO board (YHA21) LFYBEX21

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1 Models of Digital input/output LFYB series dedicated expansion board 56bit DIO board (YHA21) LFYBEX21

Image Part Number Price (excluding tax) Power supply External dimensions
Digital input/output LFYB series dedicated expansion board 56bit DIO board (YHA21) LFYBEX21-Part Number-LFYBEX21

LFYBEX21

Available upon quote

It is supplied from the CPU side by stacking it with the CPU board. The current consumption of the I/O board is within 100mA (at no load).
Operation at 3.3V cannot be guaranteed.

79×87mm (same size as CPU board)

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