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參數(shù)資料
| 型號： | M37225M8 |
| 廠商： | Mitsubishi Electric Corporation |
| 英文描述： | SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER |
| 中文描述： | 單芯片8位CMOS微機電壓合成與屏幕顯示控制器 |
| 文件頁數(shù)： | 76/133頁 |
| 文件大?。?/td> | 1610K |
| 代理商： | M37225M8 |
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76
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
with ON-SCREEN DISPLAY CONTROLLER
M37225M6–XXXSP, M37225M8–XXXSP
M37225ECSP
MITSUBISHI MICROCOMPUTERS
Rev. 1.0
(8) Multiline display
This microcomputer can ordinarily display 2 lines on the CRT screen
by displaying 2 blocks at different vertical positions. In addition, it can
display 3 lines or more by using OSD interrupts.
An OSD interrupt request occurs at the point at which display of each
block has been completed. In other words, when a scanning line
reaches the point of the display position (specified by the block i V
registers) of a certain block, the character display of that block starts,
and an interrupt occurs at the point at which the scanning line ex-
ceeds the block.
Fig. 8.10.26 Note on Occurence of OSD Interrupt
Notes 1:
An OSD interrupt does not occur at the end of display when the block
is not displayed. In other words, if a block is set to off display by the
display control bit of the block control register i (addresses 00F9
16
and 00FA
16
), an OSD interrupt request does not occur (refer to Fig-
ure 8.10.26 (A)).
2:
When another block display appeares while one block is displayed,
an OSD interrupt request occurs only once at the end of the another
block display (refer to Figure 8.10.26 (B)).
3:
On the screen setting window, an OSD interrupt occurs even at the
end of the block (off display) out of window (refer to Figure 12.11.36
(C)).
(B)
(C)
Block 1 (on display)
Block 2 (on display)
Block 1' (on display)
Block 2' (on display)
Block 1 (on display)
Block 2 (on display)
Block 1' (off display)
Block 2' (off display)
“OSD interrupt request”
“OSD interrupt request”
“OSD interrupt request”
“OSD interrupt request”
“OSD interrupt request”
“OSD interrupt request”
No
“OSD interrupt request”
Block 1
Block 2
“OSD interrupt request”
“OSD interrupt request”
“OSD interrupt request”
“OSD interrupt request”
Block 1
Block 2
Block 1'
On display (OSD interrupt request occurs
at the end of block display)
Off display (OSD interrupt request does
not occur at the end of block display)
Window
No
“OSD interrupt request”
No
“OSD interrupt request”
(A)
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