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C6845 - CRT Controller Megafunction

Datasheet Summary

Description

The C6845 Cathode Ray Tube Controller (CRTC) interfaces a microprocessor to a raster-scan CRT display.

The C6845 is a synchronous, synthesizable VHDL megafunction, functionally equivalent to the Motorola www.DataSheet4U.com MC6845 CRT Controller.

Features

  • Fully-synchronous, synthesizable VHDL Megafunction, functionally equivalent to Motorola MC6845 Capable of driving alphanumeric, semi-graphic, or bit-mapped graphics displays Wide range of programmable alphanumeric screen formats Programmable registers controlling output signals Vertical Sync (VS), Horizontal Sync (HS), and Display Enable (DE) signals Programmable hori.

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Datasheet Details

Part number C6845
Manufacturer Cast
File Size 298.74 KB
Description CRT Controller Megafunction
Datasheet download datasheet C6845 Datasheet
Additional preview pages of the C6845 datasheet.

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Full PDF Text Transcription

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C6845 CRT Controller Megafunction General Description The C6845 Cathode Ray Tube Controller (CRTC) interfaces a microprocessor to a raster-scan CRT display. The C6845 is a synchronous, synthesizable VHDL megafunction, functionally equivalent to the Motorola www.DataSheet4U.com MC6845 CRT Controller. The microprocessor access 19 registers (1 Address and 18 Data Registers) within the C6845 in order to provide video timing, refresh memory addresses, cursor, and light pen strobe signals. CRT video timing signals include Vertical Sync (VS), Horizontal Sync (HS), and Display Enable (DE) output signals. Refresh memory addressing includes Memory Address (MA[13:0]) and Row Address (RA[4:0]) output buses.
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