UPD3301-1, UPD3301 Datasheet (NEC) - Programmable CRT Controller

UPD3301-1, UPD3301, Programmable CRT Controller

Counts the characters in a row, up to the number of the characters defined in Characters/Row, Row Buffer Consists of a dual RAM buffer.

Each buffer can store up to 80 characters.

During a DMA operation, the characters are written into the Row Buffer.

One of the buffers is used for display.

Each c

NEe NEe Microcomputers, Inc.

",PD3301-1 ",PD3301-2 ~m~[~~~~illmW PROGRAMMABLE CRT CONTROLLER DESC RIPT ION The IlPD3301 is an LSI chip designed for use in CRT controllers.

It contains a synchronous signal generator.

row buffer.

and attribute memory.

This CRT controller is capable of handling not only black and white CRT.

but also color CRT.

The IlPD3301 provides control signals which simplify the design of the external circuitry needed in the systems.

Thus, this device is a versatile contr