參數(shù)資料
型號(hào): M35071-XXXSP
元件分類: 顯示控制器
英文描述: 24 X 12 CHARACTERS CRT CHAR DSPL CTLR, PDIP20
封裝: 0.300 INCH, 1.78 MM PITCH, SHRINK, PLASTIC, DIP-20
文件頁(yè)數(shù): 22/39頁(yè)
文件大?。?/td> 227K
代理商: M35071-XXXSP
MITSUBISHI MICROCOMPUTERS
M35071-XXXSP/FP
SCREEN CHARACTER and PATTERN DISPLAY CONTROLLERS
29
NOTE FOR SUPPLYING POWER
__
(1)Timing of power supplying to AC pin
The internal circuit of M35071-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.
DATA REQUIRED FOR MASK ROM ORDERING
Please send the following data for mask orders.
(1) M35071-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
PRECAUTION FOR USE
Notes on noise and latch-up
In order to avoid noise and latch-up, connect a bypass capacitor
(
≈0.1F) directly between the VDD1 pin and VSS1 pin, and the VDD2
pin and VSS2 pin using a heavy wire.
Fig. 16
__
Timing of power supplying to AC pin
After supplying the power (VDD and VSS) to M35071-XXXSP/FP
and the supply voltage becomes more than 0.8
× VDD, it needs to
__
keep VIL time; tw of the AC pin for more than 1ms.
__
Start inputting from microcomputer after AC pin supply voltage
becomes more than 0.8
× VDD and keeping 200ms wait time.
(2)Timing of power supplying to VDD1 and VDD2.
Supply power to VDD1 and VDD2 at the same time.
Note for waveform timing of the horizontal signals to the HOR pin
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.
90%
10%
tf
tr
Horizontal synchronous signal
Voltage [V]
VDD
0.8 x VDD
0.2 x VDD
Supply voltage
more than 1ms
tW
tS
Time t [s]
Data input disable
VAC
(AC pin input voltage)
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