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NJU6541A

Description
Static 1/2 1/3 1/4 Duty LCD Driver
File Size399KB,41 Pages
ManufacturerNew JRC
Websitehttps://www.njr.com
Download Datasheet View All

NJU6541A Overview

Static 1/2 1/3 1/4 Duty LCD Driver

Preliminary
Static 1/2 1/3 1/4 Duty LCD Driver
!
GENERAL DESCRIPTION
The
NJU6541A
is a Static or 1/2,1/3,1/4 duty segment
type LCD driver. It incorporates 4 common driver circuits
and 120 segment driver circuits. The
NJU6541A
can
drive maximum 480 segments in 1/4 duty ratio, and can
2
use I C F/S mode.
In addition
, the
NJU6541A's
useful functions meet a
NJU6541A
!
PACKAGE OUTLINE
wide range of applications.
!
FEATURES
NJU6541A
#
LCD driving circuit
:Max. 120outputs (4 outputs as for general purpose ports)
#
Programmable Duty Ratio
Static
:Driving max. 120 segments
1/2 Duty Ratio
:Driving max. 240 segments
1/3 Duty Ratio
:Driving max. 360 segments
1/4 Duty Ratio
:Driving max. 480 segments
#
General Purpose Port :Driving max 4outputs (SEG1-SEG4:4outputs as for general purpose ports)
#
Key Scan Function
:Max 30Key(5-out x 6-in matrix)
#
Programmable Bias Ratio
:1/2, 1/3 bias ratio (Static:1/1)
2
#
I C-bus Interface
:F/S mode slave address 0111_000*
(*: Read/ Write mode distinction: 0=write, 1=read)
#
Oscillator
:
CR oscillation with external resistor and capacitance, or external oscillation
signal input
Operating Wave Form :A wave form, B wave form
Electrical Variable Resistance :8-steps
Power ON Initialize Circuit On-Chip
Useful Instruction Set
:Duty select, Bias select, Wave form select, Oscillation select, Segment or general
purpose ports select, Segment or Key scan output select, E.V.R select,
Display ON/OFF, Key scan ON/OFF
#
Operating Voltage
:3.0V / 5.0V
#
C-MOS Technology
:
P-Sub
#
Package Outline
:LQFP144 20mm*20mm t=1.7mm(max) Pin-pitch=0.5mm
#
#
#
#
!
BLOCK DIAGRAM
VDD
V0
REQ
S5 K1- K6
COM1
COM4
SEG1/P1
SEG4/P4
SEG5
SEG115 SEG117/S1 SEG120/S4
EVR
V1
Key Scan
Common
Driver
Segment Driver
V2
Latch
V3
VSS
OSC
SDA
DNC
VSS
SCL
RSTB
TEST
OSC
Display Reg
I C Control
2
Decoder
Command Reg
Power ON Reset
Ver.2009-04-02
-1-
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