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M35046-059FP Datasheet

  • M35046-059FP

  • SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS

  • 40頁

  • MITSUBISHI   MITSUBISHI

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MITSUBISHI MICROCOMPUTERS
M35046-XXXSP/FP
SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS
NOTE FOR SUPPLYING POWER
__
Timing of power supplying to AC pin
The internal circuit of M35046-XXXSP/FP is reset when the level of
__
the auto clear input pin AC is 鈥淟鈥? This pin in hysteresis input with the
__
pull-up resistor. The timing about power supplying of AC pin is shown
in Figure 11.
Timing of power supplying to V
DD1
and V
DD2
.
Supply power to V
DD1
and V
DD2
at the same time.
Voltage
[V]
V
DD
Supply voltage
0.8
脳
V
DD
V
AC
(AC pin input voltage)
0.2
脳
V
DD
t
W
more than 1ms
t
S
Time t
[
s
]
__
Fig. 11 Timing of power supplying to AC pin
After supplying the power (V
DD
and V
SS
) to M35046-XXXSP/FP and
the supply voltage becomes more than 0.8
脳
V
DD
, it needs to keep
__
V
IL
time; tw of the AC pin for more than 1ms.
__
Start inputting from microcomputer after AC pin supply voltage
becomes more than 0.8
脳
V
DD
and keeping 200ms wait time.
PRECAUTION FOR USE
Notes on noise and latch-up
In order to avoid noise and latch-up, connect a bypass capacitor
(鈮?.1碌F) directly between the V
DD1
pin and V
SS
pin, and the V
DD2
pin
and V
SS
pin using a heavy wire.
DATA REQUIRED FOR MASK ROM ORDERING
Please send the following data for mask orders.
(1) M35046-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
+ character data
26

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