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NJU6541A fiches techniques PDF

NJR Corporation - LCD Driver

Numéro de référence NJU6541A
Description LCD Driver
Fabricant NJR Corporation 
Logo NJR Corporation 





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NJU6541A fiche technique
Preliminary NJU6541A
Static 1/2 1/3 1/4 Duty LCD Driver
www!.dataGshEeNet4EuR.coAmL 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
use I2C F/S mode.
In addition, the NJU6541A's useful functions meet a
wide range of applications.
! PACKAGE OUTLINE
! FEATURES
# LCD driving circuit
NJU6541A
: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)
# I2C-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
REQ S5 K1- K6 COM1
COM4
SEG1/P1 SEG4/P4 SEG5 SEG115 SEG117/S1 SEG120/S4
VDD
V0
V1
EVR
Key Scan
Common
Driver
Segment Driver
V2
Latch
V3
VSS
OSC
SDA
DNC
SCL
RSTB
TEST
VSS
OSC
Display Reg
I2 C Control
Decoder
Command Reg
Power ON Reset
Ver.2009-04-02
-1-

PagesPages 30
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