NJU3426 Datasheet, PDF (1/12 Pages) New Japan Radio – 16-SEGMENT X 15-Digit VFD CONTROLLER / DRIVER

NJU3426
PRELIMINARY
16-SEGMENT X 15-Digit
VFD CONTROLLER / DRIVER
! GENERAL DESCRIPTION
! PACKAGE OUTLINE
The NJU3426 is a VFD (Vacuum Fluorescent Display)
controller/driver to dynamically drive up to 16 segments x 15
digits. It consists of display data RAM, an address counter,
command registers, a serial interface and high voltage drivers.
The direct control from the MPU and high voltage drivers of
45V make the NJU3426 well suited for various VFD displays.
! FEATURES
NJU3426FP1
# Directly Drives 16-segment x 15-digit
# High VFD Driving Voltage
# Display Shift Function
: |V_DD-V_FDP|=45V
# Programmable Duty Ratio for Timing Signal
:2/16, 4/16, 6/16, 8/16, 10/16, 12/16, 14/16, 15/16 duty
# Display ON/OFF Control Function
# Display Data RAM
: 30 x 8-bit
# Built-in Oscillator (Formed by Connecting an External Ceramic Resonator)
# 8-bit Serial Interface
# Power-ON Reset Function
# Operating Voltage
:3.0 to 5.5V
# C-MOS Technology
# Package Outline
:QFP48-P1
! BLOCK DIAGRAM
S₀ to S₁₅
T₀ to T₁₃
V_DD
V_SS
V_FDP
High Voltage Driver
Segment Data Latch
High Voltage Driver
Timing Counter
Display RAM
30 x8-bit
Duty
Counter
Timing
Counter
Instruction Decoder
OSC
XT
XTb
SI
SCK
Serial Buffer
CSb
REST
RSTb
02/08/29
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