ML9205-01GA Просмотр технического описания (PDF) - Oki Electric Industry

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Компоненты Описание

производитель

ML9205-01GA

5 x 7 Dot Character x 16-Digit Display Controller/Driver with Character RAM

Oki Electric Industry 

¡ Semiconductor

FEDL9205-02

ML9205-01

PIN DESCRIPTION

Pin

Symbol Type Connects to

QFP-1* QFP-2*

Description

3 to 37 5 to 39 SEG1 to 35 O

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 > –5.0 mA

39 to 62 41 to 64 COM1 to 24 O

Fluorescent

tube grid

electrode

Fluorescent display tube grid electrode drive output.

Directly connected to fluorescent display tube and a pull-down

resistor is not necessary. IOH > –50.0 mA

1, 2,

79, 80 1 to 4 AD1 to AD4 O

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 > –10.0 mA

72 to 75 74 to 77 P1 to P4 O

LED anode

electrode

General port output.

Output of these pins in static operation, so these pins can drive

the LED. IOH > –2.0 mA

71 73

VDD

38, 78 40, 80 VDISP1 to 2 —

64 66 GND

Power

supply

VDD-GND are power supplies for internal logic.

VDISP-VFL are power supplies for driving fluorescent tubes.

Use the same power supply for VDD and VDISP.

63, 76 65, 78 VFL1 to 2

70 72

DA

I

Micro- Serial data input (positive logic).

controller Input from LSB.

69 71

CP

I

Micro- Shift clock input.

controller Serial data is shifted on the rising edge of CP.

68 70

CS

I

Micro- Chip select input.

controller 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

Micro- • Display digit

67

69 RESET

I

controller

or

• Brightness adjusment

• All lights ON or OFF

C2, R2

• All outputs

Content is undefined

24 digits

8/16

OFF mode

"Low" level

RESET

C2

(Circuit when R and C are

connected externally)

See Application Circuit.

R2

65 67 OSC0 I

66 68 OSC1 O

C1, R1

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

R1

OSC1

(RC oscillation circuit)

C1 See Application Circuit.

* QFP-1: QFP80-P-1414-0.65-K

* QFP-2: QFP80-P-1420-0.80-BK

6/34

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