M37151M6 datasheet(73/138 Pages) RENESAS

Part #	M37151M6

Description	SNGLE-CHIP 8-BIT CMOS MICROCOMPUTER

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Manufacturer	RENESAS [Renesas Technology Corp]

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73 / 138 page

M37151M6/M8/MA/MC/MF-XXXFP, M37151EFFP

Rev.1.00

Nov 01, 2002

page 73 of 136

REJ03B0129-0100Z

8.11.5 Memory for OSD

There are 2 types of memory for OSD: OSD ROM used to store

character dot data and OSD RAM used to specify the characters and

colors to be displayed.

OSD ROM : addresses 1140016 to 13BFF16

OSD RAM : addresses 080016 to 087F16

Fig. 8.11.16 Character Font Data Storing Address

OSD ROM address of character font data

AD15 AD14 AD13 AD12 AD11 AD10

AD9

AD8

AD7

AD6

AD5

AD4

AD3

AD2

AD1

AD0

Line number

Character code

Font bit

= “0A16” to “1D16”

= “0016” to “FF16” (“7F16” and “8016” cannot be used)

= 0 : Left area

1 : Right area

OSD ROM

address bit

Line number/character

code/font bit

0

Line number

Character code

Font

bit

0A

000016

7FF016

7FF816

601C16

600C16

11

0B

0C

0D

0E

0F

10

12

601C16

7FF816

7FF016

630016

638016

61C016

60E016

607016

19

13

14

15

16

17

18

603816

601C16

600C16

000016

1D

1A

1B

1C

b0

b7

b0

b7

Line

number

Left

area

Right

area

Data in

OSD

ROM

Character font

0

AD16

1

(1) OSD ROM

The dot pattern data for OSD characters is stored in the OSD ROM.

To specify the kinds of character font, it is necessary to write the

character code into the OSD RAM.

Data of the character font is specified as shown in Figure 8.11.16.

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