M38B53M4-059FP datasheet(209/355 Pages) MITSUBISHI

209 / 355 page

2-121

38B5 Group User’s Manual

APPLICATION

2.4 FLD controller

Display start

FLDC mode register (address 0EF416)

1 0 1 0 0

0 1 1

FLDM

Interrupt edge selection register (address 003A16)

CNTR1 pin rising edge active

INTEDGE

Timer 34 mode register (address 002916)

Timer 4 count stop, count start at FLD display started

T34M

Timer 4 count source: External count input CNTR1

Check value of T4 each time timer 6 interrupt occurrence

When the value is FE16, it is judged as correct state

Timer 4 (address 002316)

T4FF16

Timer 56 mode register (address 002A16)

Timer 5 count stop, count start at FLD display started

T56M

Timer 5 count source: f(XIN)/8

Timer 6 count stop, count start at FLD display started

P44 I/O port

Timer 6: Timer mode

001

Timer 6 count source: Timer 5 underflow

Interrupt request register 2 (address 003D16)

Clear timer 6 interrupt request

IREQ2

Timer 5 (address 002416)

T50716

Timer 6 interrupt occurs at 3.264 ms intervals

Timer 6 (address 002516)

T6CB16

Interrupt control register 2 (address 003F16)

Timer 6 interrupt enabled

ICON20

0 0111 1

FLDDP0

FLD data pointer (address 0EF816)

Set {(digit number) – 1} = 15

M38B53M4-059FP Datasheet(PDF) 209 Page - Mitsubishi Electric Semiconductor

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