DataSheet26.com

NJU3426 PDF даташит

Спецификация NJU3426 изготовлена ​​​​«JRC» и имеет функцию, называемую «16 segments 14 digits / QFP48-P1».

Детали детали

Номер произв NJU3426
Описание 16 segments 14 digits / QFP48-P1
Производители JRC
логотип JRC логотип 

15 Pages
scroll

No Preview Available !

NJU3426 Даташит, Описание, Даташиты
www.DataSheet4U.com
NJU3426
16-SEGMENT X 14-Digit
VFD CONTROLLER / DRIVER
GENERAL DESCRIPTION
The NJU3426 is a VFD (Vacuum Fluorescent Display)
controller/driver to dynamically drive up to 16 segments x 14
digits. It consists of display data RAM, an address counter,
command registers, a serial interface and high voltage drivers.
The NJU3426 features the direct connection to MPU and the
high voltage drivers of 45V well-suited for various VFD
displays.
PACKAGE OUTLINE
NJU3426FP1
FEATURES
Directly Drives 16-segment x 14-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 (External Ceramic Resonator or External Resistor or External Clock)
8-bit Serial Interface
Power-ON Reset Function
Operating Voltage
: 3.3V / 5.0V
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
Ver.2003-09-02
-1-









No Preview Available !

NJU3426 Даташит, Описание, Даташиты
NJU3426
www.DataSheet4U.com
PIN CONFIGURATION
VFDP
N.C.
RSTb
CSb
SCK
SI
VSS
XT
XTb
VDD
39
40
41
42
43
44
45
46
47
48
NJU3426FP1
24 T3
23 T2
22 T1
21 T0
20 S15
19 S14
18 S13
17 S12
16 S11
15 S10
TERMINAL DISCRIPTION
PAD No.
48
45
39
46
47
3 to 12,
15 to 20
21 to 24,
27 to 36
41
42
43
44
1, 2, 13,
14, 25, 26,
37, 38, 40
SYMBOL
VDD
VSS
VFDP
XT
XTb
S0 to S15
T0 to T13
RSTb
CSb
SCK
SI
N.C.
FUNCTION
Power Supply For Logic Voltage
3.3V / 5.0V
Ground
VSS=0V
Power Supply For VFD Driving Voltage
Ceramic Resonator Connection, Resistor Connection, or External Clock Input
The internal oscillator is formed by connecting an external ceramic resonator to these pins. When
an external oscillator is used instead of the internal oscillator, the external clock is input to the XT
and the XTb must be open.
Segment output terminals (Pulled down)
Timing output terminals (Pulled down)
Reset terminal (Pulled up)
Active “L”: Reset is executed when this pin is “L”.
Reset does not change the contents of display data RAM.
Chip Select
Active “L”: Data transmission is enable when this pin is ”L”.
Serial Clock Input
Serial Data Input (8 bits = 1 word)
Non connections
These pins must be open.
-2-
Ver.2003-09-02









No Preview Available !

NJU3426 Даташит, Описание, Даташиты
www.DataSheet4U.com
NJU3426
FUNCTION DESCRIPTION
(1) ADDRESS COUNTER
The address counter specifies the “Display data RAM address”, and the display data is transferred to or from this
address. For the data transmission, once an initial RAM address is determined, the display data can be continuously
transmitted without setting the RAM address. When the upper 2 bits (B7 and B6) of the 1st word are “0,0”, the lower 5
bits (B4 to B0) are interpreted as RAM address data. And the 2nd word is interpreted as display data which is stored in
the RAM address specified by the 1st word, and simultaneously the RAM address is counted up.
Although the “Display data RAM address” can be set only in the range of “0,0,0,0,0” (00H) and “1,1,1,0,1” (1DH),
the auto-increment keeps counting up to “1,1,1,1,1” (1FH), and the RAM address finally wraps to “0,0,0,0,0” (00H) then
begins counting up. Note that the display data, specified to the RAM address of “1,1,1,1,0” (1EH) or “1,1,1,1,1” (1FH),
is ignored in this sequence.
DISPLAY DATA RAM ADDRESS
B7 B6 B5 B4 B3 B2 B1 B0
0 0 * AD4 AD3 AD2 AD1 AD0
Recognition data
Display data RAM address
*:don’t care
Character
address
B7
B6
B5 B4
B3 B2 B1
B0
RAM
Address
B7
B6
B5 B4
B3 B2
B1
B0
RAM
Address
C0 01H
00H
T0 C1
03H
02H
T1 C2
05H
04H
T2 C3
07H
06H
T3 C4
T4 C5
09H
0BH
08H
0AH
T5 C6
T6 C7
0DH
0FH
0CH
0EH
T7 C8
T8 C9
11H
13H
10H
12H
T9 C10
T10 C11
15H
17H
14H
16H
T11 C12
T12 C13
19H
1BH
18H
1AH
T13 C14
1DH
1CH
1FH 1EH
S15 S14 S13 S12 S11 S10 S9 S8
S7 S6 S5 S4 S3 S2 S1 S0
: Non-existent Address
DISPLAY DATA RAM MAP
Ver.2003-09-02
-3-










Скачать PDF:

[ NJU3426.PDF Даташит ]

Номер в каталогеОписаниеПроизводители
NJU3421AVFD CONTROLLER DRIVERNew Japan Radio
New Japan Radio
NJU342616 segments 14 digits / QFP48-P1JRC
JRC
NJU342720 segments 16 digits / QFP52-A2JRC
JRC

Номер в каталоге Описание Производители
TL431

100 мА, регулируемый прецизионный шунтирующий регулятор

Unisonic Technologies
Unisonic Technologies
IRF840

8 А, 500 В, N-канальный МОП-транзистор

Vishay
Vishay
LM317

Линейный стабилизатор напряжения, 1,5 А

STMicroelectronics
STMicroelectronics

DataSheet26.com    |    2020    |

  Контакты    |    Поиск