M37221 Mitsubishi, M37221 Datasheet - Page 39

• Manufacturer Part Number: M37221
• Description: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
• Manufacturer: Mitsubishi

(3) Character Size
The size of characters to be displayed can be from 3 sizes for each
block. Use the character size register (address 00E4
acter size. The character size of block 1 can be specified by using
bits 0 and 1 of the character size register; the character size of block
2 can be specified by using bits 2 and 3. Figure 42 shows the struc-
ture of the character size register.
The character size can be selected from 3 sizes: minimum size, me-
dium size and large size. Each character size is determined by the
number of scanning lines in the height (vertical) direction and the
oscillating cycle for display (T
The minimum size consists of [1 scanning line]
size consists of [2 scanning lines]
sists of [3 scanning lines]
tween the set values in the character size register and the character
sizes.
Note: The display start position in the horizontal direction is not affected by the character size. In other words, the horizontal display start
Table 10. Relation between set values in character size register and character sizes
Set values of character size register
position is common to all blocks even when the character size varies with each block (refer to Figure 43).
CSn1
0
0
1
1
[3T
C
) in the width (horizontal) direction.
C
CSn0
]. Table 10 shows the relation be-
0
1
0
1
[2T
C
]; and the large size con-
[1T
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
16
C
) to set a char-
]; the medium
Character
Minimum
Medium
Large
size
M37221EF-XXXSP,M37221EFSP
Fig. 42. Structure of character size register
Fig. 43. Display start position of each character size (horizontal direction)
7
T
C
Width (horizontal) direction
: oscillating cycle for display
This is not available
with ON-SCREEN DISPLAY CONTROLLER
1T
2T
3T
C
C
C
Mini-
mum
Medium
Horizontal display start position
Large
0
Character size of block 1
selection bits
Character size of block 2
selection bits
Character size register
(CS : address 00E4
0 0 : Minimum size
0 1 : Medium size
1 0 : Large size
1 1 : Do not set.
0 0 : Minimum size
0 1 : Medium size
1 0 : Large size
1 1 : Do not set
Height (vertical) direction
scanning lines
1
2
3
.
16
)
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