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參數資料
| 型號： | UPD753017A |
| 廠商： | NEC Corp. |
| 元件分類： | 4位微控制器 |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER |
| 中文描述： | 4位單片機的小型通用紅外遙控器 |
| 文件頁數： | 35/88頁 |
| 文件大小： | 438K |
| 代理商： | UPD753017A |
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35
μ
PD753012A, 753016A, 753017A
Data Sheet U11662EJ2V0DS00
6.9 LCD Controller/Driver
The
μ
PD753017A incorporates a display controller which generates segment and common signals according
to the display data memory contents and incorporates segment and common drivers which can drive the LCD panel
directly.
The
μ
PD753017A LCD controller/driver functions are as follows:
Display data memory is read automatically by DMA operation and segment and common signals are
generated.
Display mode can be selected from among the following five:
1
Static
2
1/2 duty (time multiplexing by 2), 1/2 bias
3
1/3 duty (time multiplexing by 3), 1/2 bias
4
1/3 duty (time multiplexing by 3), 1/3 bias
5
1/4 duty (time multiplexing by 4), 1/3 bias
A frame frequency can be selected from among four in each display mode.
A maximum of 32 segment signal output pins (S0-S31) and four common signal output pins (COM0-COM3).
The segment signal output pins (S24-S27 and S28-S31) can be changed to the output ports in 4-pin units.
Split-resistor can be incorporated to supply LCD drive power (mask option).
· Various bias methods and LCD drive voltages can be applicable.
· When display is off, current flow to the split resistor is cut.
Display data memory not used for display can be used for normal data memory.
It can also operate by using the subsystem clock.
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