M35071 Mitsubishi, M35071 Datasheet - Page 29

• Manufacturer Part Number: M35071
• Description: SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS
• Manufacturer: Mitsubishi

NOTE FOR SUPPLYING POWER
Fig. 16
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.
PRECAUTION FOR USE
In order to avoid noise and latch-up, connect a bypass capacitor
( 0.1 F) directly between the V
pin and V
(1)Timing of power supplying to AC pin
Note for waveform timing of the horizontal signals to the HOR pin
Notes on noise and latch-up
: Set front porch edge or back porch edge by B/F register.
The internal circuit of M35071-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 16.
Horizontal synchronous signal
Timing of power supplying to AC pin
SS2
pin using a heavy wire.
0.8 x V
0.2 x V
V
DD
DD
DD
Voltage [V]
__
DD1
__
_
pin and V
90%
__
more than 1ms
10%
__
Supply voltage
t
W
SS1
_
pin, and the V
tf
DD2
SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS
tr
(2)Timing of power supplying to V
DATA REQUIRED FOR MASK ROM ORDERING
Please send the following data for mask orders.
(1) M35071-XXXSP/FP mask ROM order confirmation form
(2) 20P4B mask specification form
(3) 20P2Q-A mask specification from
(4) ROM data (EPROM 3 sets)
(5) Floppy disks containing the character font generating program
After supplying the power (V
and the supply voltage becomes more than 0.8
keep V
Start inputting from microcomputer after AC pin supply voltage
becomes more than 0.8
Supply power to V
Data input disable
+ character data
IL
time; tw of the AC pin for more than 1ms.
t
S
DD1
MITSUBISHI MICROCOMPUTERS
and V
__
M35071-XXXSP/FP
V
DD
DD2
DD
and keeping 200ms wait time.
DD1
V
(AC pin input voltage)
and V
at the same time.
Time t [s]
AC
and V
SS
) to M35071-XXXSP/FP
DD2
__
.
V
DD
, it needs to
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