3886 datasheet(115/380 Pages) RENESAS

115 / 380 page

HARDWARE

1-90

3886 Group User’s Manual

NOTES ON USAGE

Handling of Power Source Pins

In order to avoid a latch-up occurrence, connect a capacitor suit-

able for high frequencies as bypass capacitor between power

source pin (VCC pin) and GND pin (VSS pin), between power

source pin (VCC pin) and analog power source input pin (AVSS

pin). Connect the same kind of capacitor between program power

source pin (CNVss/VPP) and GND pin when executing on-board

reprogramming of flash memory version. Make sure the connec-

tion between each pin is as short as possible. We recommend

using a ceramic capacitor of 0.01

µF to 0.1 µF.

EPROM version/One Time PROM version/

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 k

Ω resistance.

The mask ROM version track of CNVSS pin has no operational in-

terference even if it is connected to Vss pin or Vcc pin via a

resistor.

Erasing of Flash memory version

For the parallel I/O mode and the serial I/O mode, set addresses

0100016 to 0FFFF16 as the memory area to be erased. If an incor-

rect address is set as the memory area to be erased, the product

may be permanently damaged.

DATA REQUIRED FOR MASK ORDERS

The following are necessary when ordering a mask ROM produc-

tion:

1.Mask ROM Confirmation Form✽1

2.Mark Specification Form✽2

3.Data to be written to ROM, in EPROM form (three identical cop-

ies)

DATA REQUIRED FOR One Time PROM

PROGRAMMING ORDERS

The following are necessary when ordering a PROM programming

service:

1.ROM Programming Confirmation Form✽1

2.Mark Specification Form✽2

3.Data to be programmed to PROM, in EPROM form (three identi-

cal copies)

For the mask ROM confirmation, the ROM programming confirma-

tion, and the mark specifications, refer to the “Mitsubishi MCU

Technical Information” Homepage.

✽1 Mask ROM Confirmation Forms

http://www.infomicom.mesc.co.jp/38000/38ordere.htm

✽2 Mark Specification Forms

http://www.infomicom.mesc.co.jp/mela/markform.htm

NOTES ON USAGE/DATA REQUIRED FOR MASK ORDERS AND ONE TIME PROM PROGRAMMING ORDERS

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