m35047 Renesas Electronics Corporation., m35047 Datasheet - Page 35

• Manufacturer Part Number: m35047
• Description: Screen Character And Pattern Display Controllers
• Manufacturer: Renesas Electronics Corporation.

NOTE FOR SUPPLYING POWER
(1)Timing of power supplying to AC pin
Fig.26 Timing of power supplying to AC pin
PRECAUTION FOR USE
In order to avoid noise and latch-up, connect a bypass capacitor
( 0.1µF) directly between the V
V
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.
34
Note for waveform timing of the horizontal signals to the HOR pin
Notes on noise and latch-up
DD2
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.
pin and V
0.8 x V
0.2 x V
SS2
V
DD
DD
DD
Voltage [V]
pin using a heavy wire.
Horizontal synchronous signal
__
_
DD1
__
more than 1ms
__
pin and V
__
Supply voltage
t
W
90%
_
10%
SS1
pin, and the
tf
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) 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
After supplying the power (V
and the supply voltage becomes more than 0.8
to keep V
Start inputting from microcomputer after AC pin supply voltage
becomes more than 0.8
Supply power to V
Data input disable
*In the case of EPROMs, thres sets of EPROMs are required
*In the case of floppy disks, 3.5-inch 2HD disk (1BM format) is
per pattern.
required per pattern.
IL
time; tw of the AC pin for more than 1ms.
t
S
DD1
MITSUBISHI MICROCOMPUTERS
and V
M35047-XXXSP/FP
__
V
DD
DD
DD2
DD1
and V
V
(AC pin input voltage)
and keeping 200ms wait time.
Time t [s]
at the same time.
AC
and V
SS
) to M35047-XXXSP/FP
__
DD2
.
V
DD
, it needs