NJU3426 查看數據表（PDF） - Japan Radio Corporation

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NJU3426

16-SEGMENT X 15-Digit VFD CONTROLLER / DRIVER

Japan Radio Corporation  

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

: |VDD-VFDP|=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

VDD

VSS

VFDP

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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