LC7940KD Просмотр технического описания (PDF) - SANYO -> Panasonic

Номер в каталоге

Компоненты Описание

производитель

LC7940KD

Dot-Matrix LCD Drivers

SANYO -> Panasonic 

LC7940KD / LC7941KDR

Segment Data Not Multiples of 4

Example.

LCD Panel (100×230 pixels)

∼

O1 • • • • • O80

LC7940KD

#1

∼

O1 • • • • • O80

LC7940KD

#2

∼

O1 • • • • • O70

LC7940KD

#3

LOAD

SDI

m,1

∼ m,2

,228 m,229 m,230 m+1,1 m+1,2

,228 m+1,229 m+1,230

If this timing data is sent, data elements (m, 229), (m, 230), (m+1, 229),(m+1, 230)… will not appear in the output

(O69 and O70 on chip 3). This is because the LC7940KD (or LC7941KDR) converts serial/parallel data in 4-bit units,

which also decrease power dissipation.

For data that is not a multiple of 4, like 230, the following scheme is used.

LOAD

SDI

m,1

m,2

∼ ,228 m,229

m,230 m,231 m,232

Valid display data

Dummy data

Multiple of 4

In this case, (m, 231) is output on O71 on chip 3, and (m, 232) on O72 on chip 3. However, these outputs are not

connected to the panel and are, therefore, invalid.

No.A0573-12/13

Share Link: