M38B53M4-059FP datasheet(309/355 Pages) MITSUBISHI

309 / 355 page

38B5 Group User’s Manual

3-61

APPENDIX

3.5 Control registers

Fig. 3.5.46 Structure of FLDC mode register

FLDC mode register

b7 b6 b5 b4 b3 b2 b1 b0

FLDC mode register

(FLDM: address 0EF416)

Name

Functions

At reset R W

Display start bit

0 : Display stopped

1 : Display in progress (display

starts by writing “1”)

Tscan control bits

b3 b2

0 0 : 0 FLD digit interrupt

(at rising edge of each

digit)

0 1 : 1 ! Tdisp

1 0 : 2 ! Tdisp

1 1 : 3 ! Tdisp

FLD blanking interrupt (at

falling edge of last digit)

Notes 1: When the gradation display mode is selected, the number of

timing is max. 16 timing. (Set “0” to the timing number control

bit (b4).)

2: When switching the timing number control bit (b4) or the

gradation display mode selection control bit (b5), set “0” to

the display start bit (b1) (display stop state) before that.

Automatic display

control bit (P0, P1,

P2, P3, P8)

0 : General-purpose mode

1 : Automatic display

mode

0 : 16 timing mode

1 : 32 timing mode (Note 2)

0 : Not selected

1 : Selected (Notes 1, 2)

0 : f(XIN)/16 or f(XCIN)/32

1 : f(XIN)/64 or f(XCIN)/128

Timing number

control bit

5 Gradation display

mode selection

control bit

Tdisp counter count

source selection bit

High-breakdown

voltage port driv-

ability selection bit

0 : Drivability strong

1 : Drivability weak

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