M38B53M4-059FP datasheet(194/355 Pages) MITSUBISHI

194 / 355 page

38B5 Group User’s Manual

2-106

APPLICATION

2.4 FLD controller

Control procedure:

Fig. 2.4.25 Control procedure

Initialization

P0D (address 000116), bit 4–bit 7

P0FPR (address 0EF916)

P2FPR (address 0EFA16)

FLDM (address 0EF416)

TDISP (address 0EF516)

TOFF1 (address 0EF616)

TOFF2 (address 0EF716)

FLDDP (address 0EF816)

00002

000000112

111111112

101000012

3216

A16

1016 (Note 1)

000010012

FLD automatic display RAM

(addresses 0FB016

–0FE916)

Data to be

display

Main processing

IREQ2 (address 003D16), bit 60

RESET

FLD automatic display function setting

FLD port setting

Port direction register setting

1 cycle or more wait

ICON2 (address 003F16), bit 6

FLDM (address 0EF416), bit 1

P1FLDRAM (address 0EF216)

P3FLDRAM (address 0EF316)

111111112

000000112

(Note 3)

Gradation display control

RAM

(addresses 0F6016–0F9916)

Gradation display

control data (Note 1)

Digit data and segment data setting (Note 2)

Setting of gradation display control data

Set “1” for dark display

Set “0” for bright display (Note 2)

Writing data to digit pin disabled

FLD digit interrupt request bit cleared

Wait until writing to the FLD digit interrupt request

bit is completed

FLD digit interrupt enabled

FLD automatic display start

Notes 1: When selecting the gradation display, set these

registers, too.

2: The display data can be rewritten at arbitrary

timing.

3: Set these registers according to necessity.

M38B53M4-059FP Datasheet(PDF) 194 Page - Mitsubishi Electric Semiconductor

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