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CDP1851C

Part Number	CDP1851C
Manufacturer	GE
Description	CMOS Programmable I/O Interface
Published	Feb 22, 2017
Detailed Description	_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ CMOS Perlph~rals TERMINAL ASSIGNMENT CL.OCI( cs RAD RAI BU...
Datasheet	CDP1851C PDF File

Overview

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ CMOS Perlph~rals TERMINAL ASSIGNMENT CL.
OCI( cs RAD RAI BUSO BUSI BUS2 BUS3 BUS4 BUS5 .
,.
0e STROBE VDD RD/WE ".
WR/liE A ROY A STROBE AD AI .
A2 A3 A4 All .
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A6 .
7A7 •.
•,, V55 .
2 TOP VIEW 9~CS~31926 4G-LEAO OIL PACKAGES CDP1851, CDP1851C CMOS Programmable 1/0 Interface Features: • 20 Programmable 110 Lines • Programmable for Operation in Four Modes: Input Output Bidirectional Bit-programmable • Operates in Either I/O or Memory Space The RCA CDP1851 and CDP1851C are CMOS programmable two-port I/Os designed for use as general-purpose 1/0 devices.
They are directly compatible with CDP1800 series microprocessors functioning at maximum clock frequency.
Each port can be programmed in either byte-I/O or bit-programmable modes for interfacing with peripheral devices such as printers and keyboards.
Both ports A and B can be separately programmed to be 8 bit input or output ports with handshaking control lines, ROY and ...

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