M38K09RFS datasheet(272/328 Pages) RENESAS

Part #	M38K09RFS

Description	RENESAS 8-BIT SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 38000 SERIES

PDF	328 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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272 / 328 page

3.2 Notes on use

Rev.2.00

Oct 05, 2006

page 31 of 89

38K0 Group

REJ09B0337-0200

APPENDIX

3.2.14 Notes on flash memory version

The CNVss pin is connected to the internal memory circuit block by a low-ohmic resistance, since it has

the multiplexed function to be a programmable power source pin (VPP pin) as well.

To improve the noise reduction, connect a track between CNVss pin and Vss pin or Vcc pin with 1 to 10

Ω resistance.

The mask ROM version track of CNVss pin has no operational interference even if it is connected to Vss

pin or Vcc pin via a resistor.

3.2.15 Electric Characteristic Differences Between Mask ROM and Flash Memory Version MCUs

There are differences in electric characteristics, operation margin, noise immunity, and noise radiation

between Mask ROM and Flash Memory version MCUs due to the difference in the manufacturing processes.

When manufacturing an application system with the Flash Memory version and then switching to use of the

Mask ROM version, please perform sufficient evaluations for the commercial samples of the Mask ROM

version.

M38K09RFS Datasheet(PDF) 272 Page - Renesas Technology Corp