M38B53M4-059FP datasheet(196/355 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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196 / 355 page

38B5 Group User’s Manual

2-108

APPLICATION

2.4 FLD controller

P20

P21

P22

P27

P30, P31

P10–P17

P00, P01

P20–P27

P04–P07

Segment

Digit

SP EP

REC

LEVEL

SUN MON TUE WED THU FRI SAT

38B5 Group

Key-matrix

Panel with fluorescent display (FLD)

Segment

(3)

FLD display by software (example of not used FLD controller)

Outline: FLD display and key read-in is performed, using a timer interrupt.

Fig. 2.4.26 Connection diagram

Specifications: •Use of 10 digits and 10 segments (8 key-scan included)

•Display controlled by software

•Use of timer 1 interrupt

Figure 2.4.27 shows the timing chart of FLD display by software, and Figure 2.4.28 shows the

enlarged view of P20 to P27 key-scan. Generate the waveform shown Figure 2.4.28 by software and

perform key-scan.

Fig. 2.4.27 Timing chart of FLD display by software

P10

P11

P12

P31

P20–P27,

P00, P01

Key-scan

• • •

Fig. 2.4.28 Enlarged view of P20 to P27 key-scan

M38B53M4-059FP Datasheet(PDF) 196 Page - Mitsubishi Electric Semiconductor

M38B53M4-059FP Datasheet(HTML) 196 Page - Mitsubishi Electric Semiconductor

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