Electronic Components Datasheet Search
  English  ▼

Delete All
ON OFF
ALLDATASHEET.COM

X  

Preview PDF Download HTML

UPD16663 Datasheet(PDF) 4 Page - NEC

Part No. UPD16663
Description  240-OUTPUT LCD COLUMN SEGMENT DRIVER WITH BUILT-IN RAM
Download  40 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  NEC [NEC]
Homepage  http://www.nec.com/
Logo 

UPD16663 Datasheet(HTML) 4 Page - NEC

 
Zoom Inzoom in Zoom Outzoom out
 4 / 40 page
background image
Data Sheet S13392EJ1V0DS00
4
µµµµPD16663
2. BLOCK FUNCTION
(1) Address management circuit
Converts an address transferred from the system via A0 to A16 to an address that corresponds to the on-
chip RAM memory map.
This function enables address management for a display size of up to 480 x 320 dots using four
µPD16663
LSIs, thus facilitating the configuration of LCD systems.
The allocation of addresses 1FFF80H to 1FFFEH (even addresses only) to the gray scale palette register
also allows the user to select any 16 gray scales from a palette of 49.
(2) Arbiter
Resolves a conflict between a RAM access from the system and a RAM read on the LCD drive side.
(3) RAM
240 x 160 x 4 bits of static RAM (single port).
(4) Data bus control
Controls the direction in which data is transferred according to whether the system is reading or writing.
The bus width can also be switched between 8 and 16 bits with the BMODE pin.
(5) Gray scale generation circuit
Culls frames and modulates the pulse width to realize 49 gray scales.
(6) Internal timing generator
Generates the internal timing for each block from the /FRM and STB signals.
(7) CR oscillator
In master mode, this oscillator generates the clock referenced for the frame frequency. The frame frequency
is determined by dividing this clock by 2592. To obtain a frame frequency of 70 Hz, therefore, an oscillation
frequency of 181.44 kHz is required. Because the CR oscillator is on chip, adjust the oscillation frequency
using an external resistor.
Oscillation is stopped in slave mode.
(8) LCD timing generator
In master mode, this generator generates /FRM (the frame signal), STB (the column driver signal strobe),
and PULSE (the 49-gray-scale pulse modulation clock).
(9) Gray scale control
This is a circuit for realizing a 16-gray-scale display.


Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36  37  38  39  40 


Datasheet Download




Link URL




Privacy Policy
ALLDATASHEET.COM
Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Alldatasheet API   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn