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Número de pieza | ML9208-01 | |
Descripción | 5 x 7 Dot Character x 16-Digit Display Controller/Driver | |
Fabricantes | LAPIS | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de ML9208-01 (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
No Preview Available ! FEDL9208-02
Issue Date: Nov. 16, 2009
ML9208-xx
5 7 Dot Character 16-Digit Display Controller/Driver with Character RAM
GENERAL DESCRIPTION
The ML9208-xx is a dot matrix vacuum fluorescent display tube controller driver IC which displays characters,
numerics and symbols.
Dot matrix 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.
FEATURES
Logic power supply and vacuum fluorescent display tube drive power supply (VDD)
: 3.3 V 10% or 5.0 V 10%
Fluorescent display tube drive power supply (VFL) : VDD –20 V to VDD –42 V
VFD driver output current
(VFD driver output can be connected directly to the fluorescent display tube. No pull-down resistor is
required.)
- Segment driver (SEG1 to SEG35)
- Segment driver (AD1 and AD2)
- Grid driver (COM1 to COM16)
General output port output current
: –6 mA (VFL = VDD –42 V)
: –15 mA (VFL = VDD –42 V)
: –30 mA (VFL = VDD –42 V)
- Output driver (P1 and P2)
Content of display
: 1 mA (VDD = 3.3 V 10%)
2 mA (VDD = 5.0 V 10%)
- CGROM 5 7 dots
: 248 types (character data)
- CGRAM 5 7 dots
: 8 types (character data)
- ADRAM 16 (display digit) 2 bits (symbol data)
- DCRAM 16 (display digit) 8 bits (register for character data display)
- General output port
2 bits (static operation)
Display control function
- Display digit
: 9 to 16 digits
- Display duty (contrast adjustment)
: 8 stages
- All lights ON/OFFs
3 interfaces with microcontroller
: DA, CS, CP (4 interfaces when RESET is added)
1-byte instruction execution (excluding data write to RAM)
Built-in oscillation circuit (external R and C)
Package options:
64-pin plastic QFP (QFP64-P-1414-0.80-BK) (ML9208-xxGA)
64-pin plastic SSOP (SSOP64-P-525-0.80-K) (ML9208-xxMB)
1/33
1 page FEDL9208-02
ML9208
PIN DESCRIPTION
Pin
Symbol Type Connects to
QFP SSOP
Description
1 to 31,
5 to 39 SEG1 to 35 O
61 to 64
Fluorescent
tube anode
electrode
Fluorescent display tube anode electrode drive output.
Directly connected to fluorescent display tube and a
pull-down resistor is not necessary. IOH > –6 mA
32 to 47 40 to 55 COM1 to 16 O
59, 60 3, 4 AD1, AD2 O
Fluorescent
tube grid
electrode
Fluorescent
tube anode
electrode
Fluorescent display tube grid electrode drive output.
Directly connected to fluorescent display tube and a
pull-down resistor is not necessary. IOH > –30 mA
Fluorescent display tube anode electrode drive output.
Directly connected to fluorescent display tube and a
pull-down resistor is not necessary. IOH > –15 mA
57, 58 1, 2
P1, P2
General port output.
LED drive
O control pins Output of these pins in static operation, so these pins can
drive the LED.
56 64
49 57
48 56
VDD
GND
VFL
VDD-GND are power supplies for internal logic.
— Power supply VDD-VFL are power supplies for driving fluorescent tubes.
Apply VFL after VDD is applied.
Serial data input (positive logic).
55 63 DA I Microcontroller
Input from LSB.
Shift clock input.
54 62 CP I Microcontroller
Serial data is shifted on the rising edge of CP.
Chip select input.
53 61 CS I Microcontroller
Serial data transfer is disabled when CS pin is “H” level.
Reset input.
“Low” initializes all the functions.
Initial status is as follows.
Address of each RAM address “00”H
Data of each RAM Content is undefined
Display digit 16 digits
52 60 RESET I Microcontroller Contrast adjustment 8/16
or C2, R2
All lights ON or OFF OFF mode
All outputs “Low” level
50 58 OSC0 I
51 59 OSC1 O
C1, R1
RESET
C2
R2
(Circuit when R and C are
connected externally)
See Application Circuit.
External RC pin for RC oscillation.
Connect R and C externally. The RC time constant
depends on the VDD voltage used. Set the target oscillation
frequency to 2 MHz.
OSC0
OSC1
R1
(RC oscillation circuit)
C1 See Application Circuit.
5/33
5 Page Digit Output Timing (for 16-digit display, at a duty of 15/16)
T = 8/fOSC
COM1
COM2
COM3
COM4
COM5
COM6
COM7
COM8
COM9
COM10
COM11
COM12
COM13
COM14
COM15
COM16
AD1, 2
SEG1-35
Frame cycle t1 = 1024T (t1= 4.096 ms when fosc = 2.0 MHz)
Display timing t2 = 60T (t2 = 240 s when fosc = 2.0 MHz)
Blank timing t3 = 4T
(t3 = 16 s when fosc = 2.0 MHz)
FEDL9208-02
ML9208
VDD
VFL
VDD
VFL
11/33
11 Page |
Páginas | Total 30 Páginas | |
PDF Descargar | [ Datasheet ML9208-01.PDF ] |
Número de pieza | Descripción | Fabricantes |
ML9208-01 | 5 X 7 Dot Character X 16-Digit Display Controller/Driver | OKI |
ML9208-01 | 5 x 7 Dot Character x 16-Digit Display Controller/Driver | LAPIS |
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