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| 型號(hào)： | UPD161401W |
| 廠商： | NEC Corp. |
| 英文描述： | 256-COLOR, 1/80-DUTY LCD CONTROLLER/DRIVER WITH ON-CHIP RAM |
| 中文描述： | 256色，1/80-DUTY LCD控制器/驅(qū)動(dòng)器，片內(nèi)RAM |
| 文件頁(yè)數(shù)： | 15/124頁(yè) |
| 文件大?。?/td> | 647K |
| 代理商： | UPD161401W |
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Data Sheet S15726EJ2V0DS
15
μ
PD161401
(3/3)
Symbol
Pin Name
Pin No.
I/O
Description
OSC
IN1
206 to 208
Input
OSC
IN2
212 to 214
Input
OSC
OUT
Oscillation signal pin
218 to 220
Output
These pins are connected with a resistor inserted between OSC
IN1
and OSC
OUT
, and between OSC
IN2
and OSC
OUT
. When an external
oscillator is used, input a clock signal to the OSC
IN
pin and leave
the OSC
OUT
pin open.
This pin outputs a clock for display. When using the
μ
PD161401 in
the master or slave mode, refer to
5.4 Oscillator
.
These pins are used when the
μ
PD161401 is in the test mode.
Usually, leave these pins open.
These pins are used to set the
μ
PD161401 in the test mode.
Usually, connect these pins to V
SS
.
OSC
SYNC
Display clock output
200 to 202
Output
T
OUT0
to
T
OUT15
Test output
230 to 277
Output
TSTRTST,
TSTVIHL
Test input pin
224 to 226,
227 to 229
Input
TPWR
0
,
TPWR
1
Test input/output pin
50 to 52,
47 to 49
I/O
These pins are used to input/output test signals when the
μ
PD161401 is in the test mode. Usually, leave these pins open.
3.3 Driver Pins
Symbol
Pin Name
Pin No.
I/O
Description
SEG
1
to
SEG
303
Segment
361 to 670
Output
These pins output segment signals.
O
1
to O
80
Common
319 to 358,
673 to 712
Output
These pins output common signals.
V
RS
53 to 55
V
R
Operational amplifier
input
287 to 289
Input
These are the input pins of the operational amplifier that adjusts
the LCD driving voltage. V
RS
is used to input the reference voltage
of the amplifier for LCD voltage adjustment. V
R
is used to connect
a feedback resistor for the operational amplifier.
The feedback resistor is connected between this pin and GND,
AMP
OUTM
, or AMP
OUTS
. This pin is enabled only when the internal
divider resistor for V
LCD
voltage adjustment is not used (IRS = L).
When the internal divider resistor is used (IRS = H), this pin is not
used.
AMP
OUTM
290 to 292
AMP
OUTS
Operational amplifier
output
296 to 298
Output
These pins are the output pins of the operational amplifier that
adjusts the LCD driving voltage. The signals output by these pins
are connected to the LCD driving voltage adjuster resistor (refer to
5.6.3 Voltage regulator circuit
) only when the internal resistor for
LCD voltage adjustment is not used (IRS = L). It is recommended
to connect a capacitor of 0.01 to 0.1
μ
F to these pins to stabilize
the output of the internal operational amplifier.
DUMMY
Dummy pin
1, 317, 318, 359,
360, 553 to 559,
671, 672, 713
These pins are not connected to the internal circuit.
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