7220 datasheet(175/303 Pages) RENESAS

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APPLICATION

5.1 Example of multi-line display

7220 Group User’s Manual

5-2

Fig. 5.1.2 Display example

5.1 Example of multi-line display

The M37221Mx-XXXSP/FP is used as a general example in describing this application for the 7220 group.

The M377221Mx-XXXSP/FP ordinarily displays 2 lines on a CRT screen by displaying 2 blocks at different

vertical positions. In addition to this, it can display 3 lines or more (multi-line display) by rewriting both

character data and display positions during interrupt processing, using CRT interrupts. An example of the

software processing for implemention this multi-line display is described below. This example is 12-line

multi-line display using blocks 1 and 2.

For CRT display details, refer to “2.11 CRT display function.”

5.1.1 Specifications

qPins required: R, G, B, OUT1, HSYNC, and VSYNC

qHSYNC/VSYNC input polarity: positive polarity input

qR/G/B/OUT1 output polarity: positive polarity output

qCharacter colors: red, blue, white, and cyan

qNo character background color

qBordering (OUT) is available

qCharacter size: minimum size

q12-line display

5.1.2 Connection example

Fig. 5.1.1 Connection example

P52/R

P53/G

P54/B

P55/OUT1

HSYNC

VSYNC

M37221Mx-XXXSP/FP

Monitor

Color TV signal processor

C A L E N D A R

Sun.

1 0

1 7

2 4

3 1

Mon.

1 1

1 8

2 5

Tues.

1 2

1 9

2 6

Wed.

1 3

2 0

2 7

Thur.

1 4

2 1

2 8

Fri.

1 5

2 2

2 9

Sat.

1 6

2 3

3 0

←The 1st line

← The 2nd line

← The 3rd line

← The 4th line

← The 5th line

← The 6th line

← The 7th line

← The 8th line

← The 9th line

← The 10th line

← The 11th line

← The 12th line

Block 1

Block 2

Block 1

Block 2

Block 1

Block 2

Block 1

Block 2

Block 1

Block 2

Block 1

Block 2

Blue (B)

Red (R)

Cyan

(R+G)

White (R+G+B)

J A N

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