7477 datasheet(203/354 Pages) RENESAS

Part #	7477

Description	8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 7470 SERIES

PDF	354 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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203 / 354 page

7470/7471/7477/7478 GROUP USER’S MANUAL

1-186

HARDWARE

1.19 Built-in PROM version

1.19.4 Notes on use

The notes on using the built-in PROM version are shown below.

(1) All built-in PROM version products

s Precautions at write operation

q Be careful not to apply an overvoltage to pins because a high voltage is used for a write

operation. Exercise special care when turning on the power supply.

q For writing the contents of the PROM, use a dedicated programming adapter. This permits using

a general-purpose PROM programmer for writing data. For details of dedicated programming

adapters, refer to the “DEVELOPMENT SUPPORT TOOLS FOR MICROCOMPUTERS” data

book.

s Precautions at read operation

q When reading the contents of the PROM, use a dedicated programming adapter, so that reading

can be performed by a general-purpose PROM programmer. For details of dedicated programming

adapters, refer to the “DEVELOPMENT SUPPORT TOOLS FOR MICROCOMPUTERS” data

book.

7477 Datasheet(PDF) 203 Page - Renesas Technology Corp