HD66520 Datasheet, PDF (5/45 Pages) Hitachi Semiconductor – 160-Channel 4-Level Grayscale Display Column Driver with Internal Bit-Map RAM

HD66520T
Classi-
Number
fication Symbol Pin No. Pin Name I/O of Pins Function
Bus
A0 to
interface A15
Address input Input 16
Upper 9 bits (A15–A7) are used for the
duty-directional addresses, and lower 7
bits (A6–A0) for the output-pin
directional addresses (refer to Pin
Functions for details).
DB0 to
DB7
Data input/ I/O 8
output
Packed-pixel 2-bit/pixel display data
transfer (refer to Pin Functions for
details).
&6
Chip select Input 1
LSI select signal during draw access
signal
(refer to Pin Functions for details).
:(
Write signal Input 1
Write-enable signal during draw access
(refer to Pin Functions for details).
2(
Output
Input 1
Output-enable signal during draw
enable signal
access (refer to Pin Functions for
details).
LCD
drive
output
Y1 to
Y160
LCD drive
output
Output 160
Each Y outputs one of the four voltage
levels V1, V2, V3, or V4, depending on
the combination of the M signal and
data levels
Note: The number of input outer leads: 48
V1
V3
V4
V2
Figure 1 LCD Drive Levels
1018