MPD78F0833YGC-8BT View Datasheet(PDF) - NEC => Renesas Technology

Part Name

Description

Manufacturer

MPD78F0833YGC-8BT

8-BIT SINGLE-CHIP MICROCONTROLLERS

NEC => Renesas Technology 

µPD78F0833Y

6. INTERNAL EXPANSION RAM SIZE SWITCHING REGISTER (IXS)

This register sets the internal expansion RAM capacity by software.

IXS is set with an 8-bit memory manipulation instruction.

RESET input sets IXS to 0CH.

Caution The default value of IXS is 0CH (setting prohibited). Be sure to set 08H as the initial setting.

Figure 6-1. Format of Internal Expansion RAM Size Switching Register (IXS)

Symbol 7

6

5

4

3

2

1

0

Address After reset R/W

IXS

0

0

0 IXRAM4 IXRAM3 IXRAM2 IXRAM1 IXRAM0 FFF4H

0CH

R/W

IXRAM4 IXRAM3 IXRAM2 IXRAM1 IXRAM0

Selection of internal high-speed RAM capacity

0

1

0

0

0

2,048 bytes

Other than above

Setting prohibited

18

Data Sheet U15013EJ2V0DS

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