M37221 Mitsubishi, M37221 Datasheet - Page 37

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

(2) Display Position
The display positions of characters are specified in units called a
“block.” There are 2 blocks, block 1 and block 2. Up to 20 characters
can be displayed in each block (refer to (4) Memory for Display).
The display position of each block can be set in both horizontal and
vertical directions by software.
The display position in the horizontal direction can be selected for all
blocks in common from 64-step display positions in units of 4T
(T
The display position in the vertical direction for each block can be
selected from 128-step display positions in units of 4 scanning lines.
Fig. 38. Display position
C
= oscillating cycle for display).
(a) Example when each block is separated
(b) Example when block 2 overlaps with block 1
(HR)
CV1
CV1
CV1
CV2
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
CV2
Block 2
Block 1
C
Block 2
Block 1 (second)
Block 1
M37221EF-XXXSP,M37221EFSP
Block 2 is displayed after the display of block 1 is completed (refer to
Figure 38 (a)). Accordingly, if the display of block 2 starts during the
display of block 1, only block 1 is displayed. Similarly, when multiline
display, block 1 is displayed after the display of block 2 is completed
(refer to Figure 38 (b)).
The vertical position can be specified from 128-step positions (4 scan-
ning lines per a step) for each block by setting values “00
to bits 0 to 6 in the vertical position register (addresses 00E1
00E2
ter.
16
). Figure 40 shows the structure of the vertical position regis-
with ON-SCREEN DISPLAY CONTROLLER
No display
No display
16
” to “7F
16
and
16
37
”