= HF8V = / = SP8WJT = / = SP0106RZ =
HF-1781
PROJECT: HF-1781
DESCRIPTION: Expander module
TYPE: A054-5105
BRAND: RICOH
STATUS: u
LOCALISATION: DD
DOCUMENTATION: paper: M-1 p. 13, 14, 17, 20 (PCB drawings, Block diagram, connectors), electronic: HF-1781 PROJECT FILE
PCB: TPD57081
DIMENSIONS: 140 x 110 mm
This RICOH module is de facto I/O expander with two CXD1095 I/O chips, UART, comparators, transoptors, etc. Drivers has been written for all major digital systems. Totally 72 lines can be used, from 1.5A to few miliamps output capabilities. More hardware details can be found in my reverse engineering documents in M-1 notebook and in HF1781 PROJECT FILE [1].
16 driving lines must be used (8 data, 8 control).
Originally it was daughter board for HF-17250 Mainboard.
Registered AVR Drivers:
Sources:
[1] HF-1781 PROJECT FILE
Prefix 17
HF Register
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