HD404374FT datasheet(66/161 Pages) RENESAS

Part #	HD404374FT

Description	Low-Voltage AS Microcomputers with On-Chip A/D Converter

PDF	161 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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66 / 161 page

HD404374/HD404384/HD404389/HD404082/HD404084 Series

Rev.5.00, Sep.11.2003, page 66 of 161

Bit

Read/Write

Initial value on reset

Bit name

MIS3

Not used*

MIS1

MIS0

tRC selection

(See figure 15 in the

Operating Modes section)

Miscellaneous register (MIS: $005)

Bit 2 of the miscellaneous register must always be set to 0. The microcomputer will malfunction

if it is set to 1.

MIS3

pull-up MOS control

All pull-ups MOS off

pull-up MOS active

Note: * This bit must always be set to 0. The microcomputer will malfunction if it is set to 1.

MIS2

Setting bit2

Set to 0

Use prohibited

Figure 30 Miscellaneous Register (MIS:$005)

Handling of I/O Pins Not Used by User System

If I/O pins that are not used by the user system are left floating, they may generate noise that can result in

chip malfunctions. Therefore, the pin potential must be fixed.

In this case, pull the pins up to V

CC with the built-in pull-up MOS or with an external resistor of

approximately 100 k

Ω.

HD404374FT Datasheet(PDF) 66 Page - Renesas Technology Corp