ML9207 Ver la hoja de datos (PDF) - Oki Electric Industry

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componentes Descripción

Fabricante

ML9207

5 ×7 Dot Character ×24-Digit Display Controller/Driver with Character RAM

Oki Electric Industry 

OKI Semiconductor

FEDL9207-02

ML9207-xx

PIN DESCRIPTION

Pin

QFP-1 * QFP-2*

Symbol Type

3 to 37 5 to 39 SEG1 to 35 O

39 to 62 41 to 64 COM1 to 24 O

1, 2, 79,

80

1 to 4

AD1 to AD4

O

72 to 75 74 to 77 P1 to P4 O

71

73

VDD

38, 78 40, 80

VDISP1 to 2

—

64

66

GND

63, 76 65, 78

VFL1 to 2

70

72

DA

I

69

71

CP

I

68

70

CS

I

67

69

RESET

l

65

67

OSC0

I

66

68

OSC1

O

* QFP1 : QFP80-P-1414-0.65-K

QFP2 : QFP80-P-1420-0.80-BK

Connects to

Fluorescent tube

anode electrode

Fluorescent tube

grid electrode

Fluorescent tube

anode electrode

LED anode

electrode

Power supply

Microcontroller

Microcontroller

Microcontroller

Microcontroller

Crystal or

ceramic

resonator

Description

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

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

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

General port output. Output of these pins in

static operation, so these pins can drive the

LED. IOH > –2.0 mA

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.

Serial data input (positive logic). Input from LSB.

Shift clock input. Serial data is shifted on the

rising edge of CP.

Chip select input. 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 .................. 24 digits

• Brightness adjustment .. 0/1024

• All lights ON or OFF ..... OFF mode

• All outputs .................... "Low" level

Pins for self-oscillation.

(Do not apply external clocks to these pins.)

Connect these pins to the crystal and capacitors

or to the ceramic resonator and capacitors.

The target oscillation frequency is 4.0 MHz.

(Note that the device includes the feed back

resistor of 1 MΩ)

See Application Circuit.

6/35

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