M38B53M4-059FP datasheet(182/355 Pages) MITSUBISHI

Part #	M38B53M4-059FP

Description	8-BIT SINGLE-CHIP MICROCOMPUTER

PDF	355 Pages

Scroll/Zoom	100%

Manufacturer	MITSUBISHI [Mitsubishi Electric Semiconductor]

Direct Link	http://www.mitsubishichips.com

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182 / 355 page

38B5 Group User’s Manual

2-94

APPLICATION

2.4 FLD controller

Figure 2.4.18 shows the setting of relevant registers.

Fig. 2.4.18 Setting of relevant registers

Port P0 direction register (address 000116)

P0D

000

Set P04 to P07 to input ports for key-scan input

P2D

111 11

FLDC mode register (address 0EF416)

Automatic display mode

Display stopped

Tscan = 3 ! Tdisp FLD blanking interrupt

16 timing mode

1 0

1 1 0 1

FLDM

Gradation display mode selected

Tdisp counter count source : f(XIN)/16

High-breakdown voltage port drivability weak

Port P0FLD/port switch register (address 0EF916)

01 1

Set P00, P01 to FLD ports (FLD8, FLD9)

P0FPR

000 00

Set P02–P07 to general-purpose I/O ports

P2FPR

11 1

111 11

Port P2 direction register (address 000516)

Set P20 to P27 to output ports for key-scan output

Port P2FLD/port switch register (address 0EFA16)

Set P20–P27 to FLD ports (FLD0–FLD7)

M38B53M4-059FP Datasheet(PDF) 182 Page - Mitsubishi Electric Semiconductor