參數(shù)資料
型號: M37274EFSP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, MICROCONTROLLER, PDIP52
封裝: 0.600 INCH, 1.78 MM PITCH, SHRINK, PLASTIC, DIP-52
文件頁數(shù): 119/147頁
文件大?。?/td> 2042K
代理商: M37274EFSP
73
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER
and ON-SCREEN DISPLAY CONTROLLER
M37274EFSP
PRELIMINARY
Notice:
This
is not
a final
specification.
Some
paramentic
limits
are
subject
to change.
MITSUBISHI MICROCOMPUTERS
Notes 1 : 1TC (TC : OSD clock cycle divided by prescaler) gap oc-
curs between the horizontal display start position set by
the horizontal position register and the most left dot of the
1st block. Accordingly, when 2 blocks have different pre-
divide ratios, their horizontal display start position will not
match.
Ordinaly, this gap is 1TC regardless of character sizes,
however, the gap is 1.5TC only when the character size is
1.5TC.
2 : The horizontal start position is based on the OSD clock
source cycle selected for each block. Accordingly, when 2
blocks have different OSD clock source cycles, their hori-
zontal display start position will not match.
Fig. 73. Notes on Horizontal Display Start Position
HSYNC
1TC
Block 1 (Pre-divide ratio = 1, clock source = data slicer clock)
1TC
4TOSC ! N
4TOSC’ ! N
Note 1
Note 2
Block 2 (Pre-divide ratio = 2, clock source = data slicer clock)
Block 3 (Pre-divide ratio = 3, clock source = data slicer clock)
Block 5 (Pre-divide ratio = 3, clock source = OSC1)
Block 4 (Pre-divide ratio = 2, character size = 1.5Tc, clock source = data slicer clock)
1.5TC
: Value of horizontal position register (decimal notation)
: OSD clock cycle divided in the pre-divide circuit
: OSD oscillation cycle
N
1Tc
Tosc
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