m35053 Renesas Electronics Corporation., m35053 Datasheet - Page 32

• Manufacturer Part Number: m35053
• Description: Screen Character And Pattern Display Controllers
• Manufacturer: Renesas Electronics Corporation.

PRECAUTION FOR USE
Connect a capacitor (approx. 0.1 ˚F) between pins V
the shortest distance using relatively thick wire to prevent noise and
latch up.
Note for Supplying Power
(1)
Fig. 20 Timing of power supplying to AC pin
Notes on noise and latch-up
Timing of power supplying to AC pin
The internal circuit of M35052-XXXSP/FP is reset when the level
of the auto clear input pin AC is “L”. This pin is hysteresis input
with the pull-up resistor. The timing about power supplying of AC
pin is shown in Figure 20. t
age becomes 0.8
the AC pin (V
After supplying the power (V
the t
__
W
0.8
0.2
time must be reserved for 1ms or more. Before starting
V
AC
V
__
V
Voltage [V]
DD
DD
DD
) becomes 0.2
V
DD
or more and before the supply voltage to
__
W
DD
is the interval after the supply volt-
__
and V
V
DD
__
SS
or more.
) to M35052-XXXSP/FP,
t
w
Supply voltage
DD
and V
SS
__
SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS
at
ROM ORDERING METHOD
Please submit the information described below when ordering Mask
ROM.
(1) ROM Order Confirmation Form ................................................. 1
(2) Data to be written into mask ROM ................................ EPROM
(3) Mark Specification Form ............................................................ 1
(4) Program for character font generating + froppy disk in which char-
(2) Timing of power supplying to V
acter data is input
input from the microcomputer, the waiting time (ts) must be re-
served for 500ms after the supply voltage to the AC pin becomes
0.8
The power need to supply to V
is separated perfectly between the V
the V
DD
V
DD
2 as the analog line.
or more.
ts
MITSUBISHI MICROCOMPUTERS
V
AC
(three sets containing the identical data)
M35053-XXXSP/FP
DD
DD
1 and V
1 pin and V
DD
1 as the digital line and
DD
2 at a time, though it
DD
__
2 pin
31