參數(shù)資料
型號： UPD161401P
廠商： NEC Corp.
英文描述： CABLE ASSEMBLY; N MALE TO TNC MALE; 50 OHM, RG214/U COAX, DOUBLE SHIELDED; 12" CABLE LENGTH
中文描述： 256色，1/80-DUTY LCD控制器/驅(qū)動器，片內(nèi)RAM
文件頁數(shù)： 2/124頁
文件大?。?/td> 647K
代理商： UPD161401P
Data Sheet S15726EJ2V0DS
2
μ
PD161401
CONTENT
1.
BLOCK DIAGRAM ...................................................................................................................................5
2.
PIN CONFIGURATION (Pad Layout) .....................................................................................................6
3. PIN FUNCTIONS......................................................................................................................................12
3.1 Power Supply Pins...........................................................................................................................................12
3.2 Logic Circuit Pins ............................................................................................................................................13
3.3 Driver Pins........................................................................................................................................................15
4. PIN I/O CIRCUITS AND RECOMMENDED CONNECTION OF UNUSED PINS....................................16
5. FUNCTIONAL DESCRIPTION.................................................................................................................17
5.1 CPU Interface ....................................................................................................................................................17
5.1.1
Selecting interface type...........................................................................................................................17
5.1.2
Parallel interface.....................................................................................................................................17
5.1.3
Serial interface........................................................................................................................................19
5.1.4
Chip select..............................................................................................................................................19
5.1.5
Accessing display data RAM and internal registers................................................................................19
5.2 Display Data RAM ............................................................................................................................................21
5.2.1
Display data RAM...................................................................................................................................21
5.2.2
X address circuit .....................................................................................................................................21
5.2.3
Y address circuit .....................................................................................................................................23
5.2.4
Column address circuit ...........................................................................................................................24
5.2.5
Common scan circuit ..............................................................................................................................25
5.2.6
Display data latch circuit.........................................................................................................................28
5.2.7
Arbitrary address area access (window access mode (WAS)) ...............................................................28
5.3
Screen Processing...........................................................................................................................................30
5.3.1
Blink/reverse display circuit.....................................................................................................................30
5.3.2
Example of setting blink area..................................................................................................................33
5.4 Oscillator ..........................................................................................................................................................33
5.5 Display Timing Generator ...............................................................................................................................35
5.6
Power Supply Circuit.......................................................................................................................................37
5.6.1
Power supply circuit................................................................................................................................37
5.6.2
Booster circuit.........................................................................................................................................37
5.6.3
Voltage regulator circuit..........................................................................................................................39
5.6.4
Level voltage control by operational amplifier.........................................................................................42
5.6.5
Application example of power supply circuit ...........................................................................................44
5.7 Driving LCD......................................................................................................................................................48
5.7.1
Full-dot pulse modulation........................................................................................................................48
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