ml9289 Oki Semiconductor, ml9289 Datasheet

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ml9289

Manufacturer Part Number
ml9289
Description
Vacuum Fluorescent Display Tube Controller Driver
Manufacturer
Oki Semiconductor
Datasheet

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ml9289-01GAZOAL
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GENERAL DESCRIPTION
The ML9289-xx is an alphanumeric type vacuum fluorescent display (VFD) tube controller driver IC which can
display alphanumeric characters, symbols, and bar charts.
Vacuum fluorescent display tube drive signals are generated by serial data sent from a micro-controller. A
display system is easily realized by internal ROM and RAM for character display.
-01 is available as a general-purpose code.
Custom codes are provided on customer’s request.
FEATURES
• Logic power supply (V
• Vacuum fluorescent display tube driving power supply (V
• VFD driver output current
• Content of display
• Display control function
• Four interfaces with microcontroller:
• Instruction executable with 1 byte (excluding data write for each RAM)
• Built-in oscillation circuit (resistor & capacitor connected externally)
• Package options:
ML9289-xx
Vacuum fluorescent display tube controller driver
(VFD driver output can be connected directly to the VFD tube. No pull-down resistor is required.)
• Segment driver (SEG1–16)
• Segment driver (AD1, 2)
• Grid driver (COM1–16)
• CGROM
• CGRAM
• ADRAM
• DCRAM
• Display digits
• Display duty (brightness adjustment)
• All display lights ON/OFF
AL-Pad Chip (ML9289-xxWA)
44-pin plastic QFP (QFP44-P-910-0.80-2K) (ML9289-xxGA)
48-pin plastic TQFP (TQFP48-P-0707-0.50-K) (ML9289-xxTB)
DD
)
: 3.3 V±10% or 5.0 V±10%
: 20V to 42V
: –6 mA (V
: –15 mA (V
: –30 mA (V
: 16 segments
: 16 segments
: 16 (display digit) × 2 bits (symbol data)
: 16 (display digit) × 8 bits (register for character data display)
: 1 to 16 digits
: 16 stages
DA, CS, CP, RESET
DISP
DISP
DISP
DISP
= 42 V)
)
= 42 V)
= 42 V)
240 types (character data)
16 types (character data)
Issue Date: May. 15, 2009
FEDL9289-01
1/29

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ml9289 Summary of contents

Page 1

... Vacuum fluorescent display tube controller driver GENERAL DESCRIPTION The ML9289- alphanumeric type vacuum fluorescent display (VFD) tube controller driver IC which can display alphanumeric characters, symbols, and bar charts. Vacuum fluorescent display tube drive signals are generated by serial data sent from a micro-controller. A display system is easily realized by internal ROM and RAM for character display ...

Page 2

... OSC0 DCRAM CGROM 16w × 8b 240w×16b CGRAM 16w × 16b ADRAM 16w × 2b Address Selector Write Read Address Address Counter Counter Digit Control Duty Control Timing Generator 2 FEDL9289-01 ML9289-xx SEG1 Segment Driver SEG16 AD1 AD Driver AD2 COM1 Grid Driver COM16 2/31 ...

Page 3

... PIN CONFIGURATION (TOP VIEW) COM1 1 COM2 2 COM3 3 COM4 4 COM5 5 COM6 6 COM7 7 COM8 8 COM9 9 COM10 10 COM11 44-Pin Plastic QFP FEDL9289-01 ML9289-xx SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 AD2 AD1 3/31 ...

Page 4

... COM1 1 COM2 2 COM3 3 COM4 4 COM5 5 COM6 6 COM7 7 COM8 8 COM9 9 COM10 10 COM11 11 N.C 12 N.C: No-Connection pin 48-Pin Plastic TQFP FEDL9289-01 ML9289-xx SEG6 36 SEG5 35 SEG4 34 SEG3 33 SEG2 32 SEG1 31 AD2 30 AD1 DISP 4/31 ...

Page 5

... RESET -1465 33 -1308 34 -1064 35 -820 36 VDISP -576 37 -332 38 -88 39 156 40 400 41 644 42 888 43 1132 44 FEDL9289-01 ML9289- (μm) Y (μm) 811 1465 567 1465 323 1465 79 1465 -165 1465 GND -435 1465 -575 1465 OSC0 -715 1465 VDD -855 1465 -1015 1465 ...

Page 6

... Resistors and capacitors are connected externally and constants vary depending on the V The target oscillation frequency is 2MHz OSC0 C 1 Open No-Connection pin. FEDL9289-01 ML9289-xx Description > – > – > – and GND is for the DD and GND is for the DISP first, then to V ...

Page 7

... All input pins except OSC0 — 6.8 kΩ±5 pF± DIGIT = 6.8 kΩ±5 pF± 44-pin plastic QFP AL-Pad Chip FEDL9289-01 ML9289-xx Rating Unit –0.3 to +6.5 V –0.3 to +45 V –0 +0 541 mW °C –55 to +150 –40 to 0.0 mA – ...

Page 8

... MHz, DD Duty = 0/16 no load Digit = 1–8 All output lights OFF Duty = 15/16 Digit =1– OSC All output lights MHz, DISP Duty = 0/16 no load Digit = 1–8 All output lights OFF FEDL9289-01 ML9289-xx Min. Max. Unit 0.7 V — 0.3 — μA –1.0 1.0 μA –1.0 1.0 V – 1.5 — ...

Page 9

... MHz, DD Duty = 0/16 no load Digit = 1–8 All output lights OFF Duty = 15/16 Digit =1– OSC All output lights MHz, DISP Duty = 0/16 no load Digit = 1–8 All output lights OFF FEDL9289-01 ML9289-xx Min. Max. Unit 0.8 V — 0.2 — μA –1.0 1.0 μA –1.0 1.0 V – 1.5 — ...

Page 10

... pF± — 6.8 kΩ±5 pF± — — — 80 100 20% F FEDL9289-01 ML9289-xx Min. Max. Unit — 2.0 MHz 250 — ns 250 — ns 250 — ns 250 — ns μs 16 — 250 — ...

Page 11

... DA 3) Output Timing t R All driver outputs = 3.3 V ±10% = 5.0 V ±10 0 0 DOFF VALID VALID t F FEDL9289-01 ML9289- CSW CSH 0 GND WRES 0 ...

Page 12

... COM1 COM2 COM3 COM4 COM5 COM6 COM7 COM8 COM9 COM10 COM11 COM12 COM13 COM14 COM15 COM16 AD1-2 SEG1- 1024T (f = 2.0 MHz 4.096 ms 240 μ 2.0 MHz 60T μ 2.0 MHz FEDL9289-01 ML9289-xx V DISP GND V DISP GND 12/31 ...

Page 13

... Kn : Setting of the number of display digits H : All display lights ON setting L : All display lights OFF setting C0–7: Corresponds to the 2nd byte of the CGRAM data write command. C8–15: Corresponds to the 3rd byte of the CGRAM data write command. FEDL9289-01 ML9289-xx Second byte MSB ...

Page 14

... Be sure to execute the reset operation when turning power on and set again according to “Setting Flowchart” after reset. t DOFF MSB LSB MSB 2nd byte Character code data FEDL9289-01 ML9289-xx t CSH LSB MSB 3rd byte Character code data of the next address 14/31 ...

Page 15

... DCRAM address 1H.) MSB : Specify character code of CGROM and CGRAM. (It is written into DCRAM address 2H.) MSB : Specify character code of CGROM and CGRAM. (It is written into DCRAM address FH.) MSB : Specify character code of CGROM and CGRAM. (It is rewritten into DCRAM address 0H.) FEDL9289-01 ML9289-xx 15/31 ...

Page 16

... COM X3 HEX X0 position 0 COM1 COM2 COM3 COM4 COM5 COM6 COM7 COM8 F 1 FEDL9289-01 ML9289-xx COM position COM9 COM10 COM11 COM12 COM13 COM14 COM15 COM16 16/31 ...

Page 17

... Specify 1st-column data. (It is written into CGRAM address 00H.) MSB : Specify 2nd-column data. (It is written into CGRAM address 00H.) MSB : Specify 1st-column data. (It is written into CGRAM address 01H.) MSB : Specify 2nd-column data. (It is written into CGRAM address 01H.) FEDL9289-01 ML9289-xx 17/31 ...

Page 18

... RAM04 RAM05 RAM06 RAM07 F 1 C0–7: Corresponds to the 2nd byte of the CGRAM data write command. C8–15: Corresponds to the 3rd byte of the CGRAM data write commnad. FEDL9289-01 ML9289-xx CGROM address RAM08 RAM09 RAM0A ...

Page 19

... COM HEX X0 X1 positions COM1 COM2 COM3 COM4 COM5 COM6 COM7 COM8 FEDL9289-01 ML9289-xx COM X2 X3 positions 0 1 COM9 0 1 COM10 0 1 COM11 0 1 COM12 1 1 COM13 1 1 COM14 1 1 COM15 1 1 COM16 19/31 ...

Page 20

... D3 COM duty HEX FEDL9289-01 ML9289- COM duty 8/ 9/ 10/ 11/ 12/ 13/ 14/ 15/16 20/31 ...

Page 21

... COM1– COM1– COM1– COM1– COM1– COM1– FEDL9289-01 ML9289-xx No. of digits COM COM1– COM1– COM1– COM1– COM1–12 ...

Page 22

... Sets all outputs to High 1 1 Sets all outputs to High MSB Select all display lights ON or OFF and specify their operation. * The state when power is turned on or when RESET signal is input * Priority is given to the All display lights ON command. FEDL9289-01 ML9289-xx 22/31 ...

Page 23

... CGRAM ADRAM NO NO character code character code write ended? write ended? YES YES YES Another RAM to be set? NO Release all display lights * Display operation active OFF mode End of Setting Display operation active Turn off V DISP Turn off V DD FEDL9289-01 ML9289-xx 23/31 ...

Page 24

... To prevent the IC from malfunctioning, turn on the logic power supply first, and then turn on the driver power supply when applying power. Also, for power-off, turn off the driver power supply first, then turn off the logic power supply. [Voltage] >2.0μSec FEDL9289-01 ML9289-xx V Terminal Voltage DISP V Terminal Voltage ...

Page 25

... RESET ML9289- GND V OSC0 DISP GND R 2 voltage vs. output current of each driver. DISP COM1–COM16 (Condition AD1–AD2 (Condition SEG1–SEG16 (Condition (V) FEDL9289-01 ML9289-xx Heater transformer –1.5 V) DISP –1.5 V) DISP –1.5 V) DISP 25/31 ...

Page 26

... ML9289-01 ROM CODE *ROM CODE is the character set for SEG1 to SEG16. *00000000b(00h) to 00001111b(0Fh) are the CGRAM addresses MSB 0000 0001 0010 0011 0100 LSB 0000 RAM0 0001 RAM1 0010 RAM2 0011 RAM3 0100 RAM4 0101 RAM5 0110 RAM6 0111 RAM7 1000 ...

Page 27

... RAME 1111 RAMF SEG1 SEG2 SEG16 SEG10 SEG15 SEG11 SEG14 SEG12 SEG6 SEG5 16 Segment 14 Segment design 0101 0110 0111 0001 0010 SEG1 SEG16 SEG15 SEG14 SEG6 14 Segment FEDL9289-01 ML9289-xx 7 Segment design 0011 0100 0111 SEG1 SEG10 SEG11 SEG7 SEG12 SEG4 7 Segment 27/31 ...

Page 28

... Therefore, before you perform reflow mounting, contact OKI SEMICONDUCTOR’s responsible sales person for the product name, package name, pin number, package code and desired mounting conditions (reflow method, temperature and times). FEDL9289-01 ML9289-xx (Unit: mm) Package material Epoxy resin Lead frame material ...

Page 29

... The surface mount type packages are very susceptible to heat in reflow mounting and humidity absorbed in storage. Therefore, before you perform reflow mounting, contact OKI SEMICONDUCTOR’s responsible sales person for the product name, package name, pin number, package code and desired mounting conditions (reflow method, temperature and times). FEDL9289-01 ML9289-xx (Unit: mm) 29/31 ...

Page 30

... REVISION HISTORY Document Date No. FEDL9289-01 May 15, 2009 Page Previous Current Edition Edition ⎯ ⎯ Final edition 1 FEDL9289-01 ML9289-xx Description 30/31 ...

Page 31

... The purchaser assumes the responsibility of determining the legality of export of these products and will take appropriate and necessary steps at their own expense for these part of the contents contained herein may be reprinted or reproduced without our prior permission. Copyright 2009 OKI SEMICONDUCTOR CO., LTD. FEDL9289-01 ML9289-xx 31/31 ...

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