HD64F2633RF28 datasheet(5/1453 Pages) RENESAS

Part #	HD64F2633RF28

Description	Series of Microcomputers (MCUs: microcomputer units)

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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General Precautions on the Handling of Products

1. Treatment of NC Pins

Note:

Do not connect anything to the NC pins.

The NC (not connected) pins are either not connected to any of the internal circuitry; or

are used as test pins or to reduce noise. If something is connected to the NC pins, the

operation of the LSI is not guaranteed.

2. Treatment of Unused Input Pins

Note:

Fix all unused input pins to high or low level.

Generally, the input pins of CMOS products are high-impedance input pins. If unused pins

are in their open states, intermediate levels are induced by noise in the vicinity, a pass-

through current flows internally, and a malfunction may occur.

3. Processing before Initialization

Note:

When power is first supplied, the product’s state is undefined. The states of internal

circuits are undefined until full power is supplied throughout the chip and a low level is

input on the reset pin. During the period where the states are undefined, the register

settings and the output state of each pin are also undefined. Design your system so that it

does not malfunction because of processing while it is in this undefined state. For those

products which have a reset function, reset the LSI immediately after the power supply has

been turned on.

4. Prohibition of Access to Undefined or Reserved Address

Note:

Access to undefined or reserved addresses is prohibited.

The undefined or reserved addresses may be used to expand functions, or test registers

may have been be allocated to these address. Do not access these registers: the system’s

operation is not guaranteed if they are accessed.

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