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UM6845E

UMC
Part Number UM6845E
Manufacturer UMC
Description CRT Controller
Published Jan 28, 2017
Detailed Description (l)UMC UM6845£/UM6845£A/UM6845£B CRT Controller Features • Single + 5 volt (± 5%) power supply • Alphanumeric and limi...
Datasheet PDF File UM6845E PDF File

UM6845E
UM6845E

Overview
(l)UMC UM6845£/UM6845£A/UM6845£B CRT Controller Features • Single + 5 volt (± 5%) power supply • Alphanumeric and limited graphics capabilities • Fully programmable display (rows, columns, blanking, etc.
).
• Interlaced or non-interlaced scan • 50/60 Hz operation • Fully programmable cursor • External light pen capability • Capable of addressing up to 16K character Video Display RAM • No DMA required • Pin-compatible with MC6845R • Row/Column or straight-binary' addressing for Video Display RAM • Video Display RAM may be configured as part of microprocessor memory field or independently slaved to 6845 • Internal status register 3.
7 MHz character clock • Transparent address mode General Description The UM6845E is a CRT Controller intended to provide capability for interfacing and 8 or 16 bit microprocessor family to CRT or TV-type raster scan displays.
A unique feature is the inclusion of several modes of operation, so that the system designer can con...


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