M37220M3-010SP MITSUBISHI [Mitsubishi Electric Semiconductor], M37220M3-010SP Datasheet - Page 31

• Manufacturer Part Number: M37220M3-010SP
• Description: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER?
• Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]

(4) Memory for Display
There are 2 types of memory for display : CRT display ROM (ad-
dresses 10000
(masked) and CRT display RAM (addresses 0600
to specify the colors of characters to be displayed. The following de-
scribes each type of display memory.
The CRT display ROM contains dot pattern data for characters to be
displayed. For characters stored in this ROM to be actually displayed,
it is necessary to specify them by writing the character code inherent
to each character (code determined based on the addresses in the
CRT display ROM) into the CRT display RAM. The character code
list is shown in Table 7.
Fig. 32. Display character stored data
ROM for display (addresses 10000
16
10XXF
10XX0
to 10FFF
16
16
16
b7
) used to store character dot data
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
1
16
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
to 10FFF
0
0
0
1
1
1
0
0
0
0
0
0
0
0
0
1
0
0
1
0
0
0
0
0
0
0
0
1
0
1
0
0
16
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
0
0
0
1
1
0
0
0
0
0
to 06B3
16
0
0
0
0
0
1
)
0
0
1
0
0
1
0
0
0
0
0
0
0
0
0
1
16
0
0
0
1
0
0
1
1
0
0
0
0
0
0
0
1
b0
) used
The CRT display ROM has a capacity of 4K bytes. Since 32 bytes
are required for 1 character data, the ROM can stores up to 128
kinds of characters.
The CRT display ROM space is broadly divided into 2 areas. The
[vertical 16 dots]
acters are stored in addresses 10000
dots]
stored in addresses 10800
however that the high-order 4 bits in the data to be written to ad-
dresses 10800
10XX0
10XXF
+800
+800
16
16
16
16
[horizontal (right side) 4 dots] data of display characters are
b7
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
16
to 10FFF
with ON-SCREEN DISPLAY CONTROLLER
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
[horizontal (left side) 8 dots] data of display char-
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
MITSUBISHI MICROCOMPUTERS
16
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
16
must be set to “1” (by writing data “FX
M37220M3-XXXSP
b3
0
to 10FFF
0
0
0
0
0
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
0
16
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
16
to 107FF
(refer to Figure 32). Note
b0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
16
; the [vertical 16
16
31
”).