m35080fp Renesas Electronics Corporation., m35080fp Datasheet - Page 25

• Manufacturer Part Number: m35080fp
• Description: Screen Character And Pattern Display Controllers
• Manufacturer: Renesas Electronics Corporation.

Fig.19 Timing of power supplying to AC pin
Input the continuous external clock which cycle is fixed and syn-
chronized with horizontal synchronized signal from TCK pin. And,
input continuous horizontal synchronized signal which cycle is
fixed from HOR pin. Do not stop clock input absolutely during dis-
play.
24
PRECAUTION FOR USE
In order to avoid noise and latch-up, connect a bypass capacitor
( 0.1µF) directly between the V
V
NOTE FOR SUPPLYING POWER
(1)
Notes on the time of external clock input to TCK pin
Notes on noise and latch-up
DD2
Timing of power supplying to AC pin
The internal circuit of M35080FP 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 be-
low.
After supplying the power (V
supply voltage becomes more than 0.8
V
Start inputting from microcomputer after AC pin supply voltage
becomes more than 0.8
IL
pin and V
time; tw of the AC pin for more than 1ms.
0.8
0.2
SS2
V
V
V
pin using a heavy wire.
DD
DD
DD
Voltage [V]
__
__
V
DD
DD
__
DD1
and keeping 200ms wait time.
and V
pin and V
__
__
SS
Supply voltage
) to M35080FP and the
__
t
W
V
DD
SS1
, it needs to keep
pin, and the
SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS
(2) Timing of power supplying to V
Supply power to V
Data input disable
t
S
DD1
MITSUBISHI MICROCOMPUTERS
and V
V
(AC pin input voltage)
DD2
Time t [s]
AC
DD1
at the same time.
and V
DD2
M35080FP
.