m35070-002fp Mitsumi Electronics, Corp., m35070-002fp Datasheet - Page 29

• Manufacturer Part Number: m35070-002fp
• Description: Screen Character Pattern Display Controllers
• Manufacturer: Mitsumi Electronics, Corp.

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 M35070-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) M35070-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
__
M35070-XXXSP/FP
V
DD
DD2
DD
and keeping 200ms wait time.
DD1
V
(AC pin input voltage)
and V
Time t [s]
at the same time.
AC
and V
SS
) to M35070-XXXSP/FP
DD2
__
.
V
DD
, it needs to
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