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M35047 데이터시트(PDF) 34 Page - Mitsubishi Electric Semiconductor

부품명 M35047
상세설명  SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS?
PDF  50 Pages
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제조업체  MITSUBISHI [Mitsubishi Electric Semiconductor]
홈페이지  http://www.mitsubishichips.com
Logo MITSUBISHI - Mitsubishi Electric Semiconductor

M35047 데이터시트(HTML) 34 Page - Mitsubishi Electric Semiconductor

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MITSUBISHI MICROCOMPUTERS
M35047-XXXSP/FP
SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS
34
NOTE FOR SUPPLYING POWER
__
(1)Timing of power supplying to AC pin
The internal circuit of M35047-XXXSP/FP is reset when the
__
level of the auto clear input pin AC is "L". This pin in hysteresis
input with the pull-up resistor.
__
The timing about power supplying of AC pin is shown in Figure 26.
DATA REQUIRED FOR MASK ROM
ORDERING
Please send the following data for mask orders.
(1) M35047-XXXSP/FP mask ROM order confirmation form
(2) 20P4B mark specification form
(3) 20P2Q-A mark specification form
(4) ROM data : EPROMs or floppy disks
*In the case of EPROMs, thres sets of EPROMs are required
per pattern.
*In the case of floppy disks, 3.5-inch 2HD disk (1BM format) is
required per pattern.
PRECAUTION FOR USE
Notes on noise and latch-up
In order to avoid noise and latch-up, connect a bypass capacitor
(
≈0.1µF) directly between the VDD1 pin and VSS1 pin, and the
VDD2 pin and VSS2 pin using a heavy wire.
__
Fig.26 Timing of power supplying to AC pin
After supplying the power (VDD and VSS) to M35047-XXXSP/FP
and the supply voltage becomes more than 0.8 ! VDD, it needs
__
to keep VIL time; tw of the AC pin for more than 1ms.
__
Start inputting from microcomputer after AC pin supply voltage
becomes more than 0.8 ! VDD and keeping 200ms wait time.
(2)Timing of power supplying to VDD1 and VDD2.
Supply power to VDD1 and VDD2 at the same time.
Note for waveform timing of the horizontal signals to the HOR pin
Set horizontal synchronous signal edge* waveform timing to under
5ns and input to HOR pin.
_
Set only the side which set by B/F register waveform timing under
5ns and input to HOR pin.
_
*: Set front porch edge or back porch edge by B/F register.
Voltage [V]
VDD
0.8 x VDD
0.2 x VDD
Supply voltage
more than 1ms
tW
tS
Time t [s]
Data input disable
VAC
(AC pin input voltage)
90%
10%
tf
tr
Horizontal synchronous signal



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