HD66712 (LCD-II/F12)

(Dot-Matrix Liquid Crystal Display Controller/Driver)

Description

The HD66712 dot-matrix liquid crystal display

controller and driver LSI displays alphanumerics,

numbers, and symbols. It can be configured to

drive a dot-matrix liquid crystal display under the

control of a serial or a 4- or 8-bit microprocessor.

Since all the functions such as display RAM,

character generator, and liquid crystal driver,

required for driving a dot-matrix liquid crystal

display are internally provided on one chip, a

minimum system can be interfaced with this con-

troller/driver.

A single HD66712 is capable of displaying a single

24-character line, two 24-character lines, or four

12-character lines.

The HD66712 software is upwardly compatible

with the LCDII (HD44780) which allows the user

to easily replace an LCD-II with an HD66712. In

addition, the HD66712 is equipped with functions

such as segment displays for icon marks, a 4-line

display mode, and a horizontal smooth scroll, and

thus supports various display forms. This achieves

various display forms. The HD66712 character

generator ROM is extended to generate 240 5

×

8

dot characters.

The low-voltage operation (2.7 V) of the HD66712,

combined with a low-power mode, is suitable for

any portable battery-driven product requiring low

power consumption.

• Low-power operation support:

— 2.7 to 5.5 V (low voltage)

— Wide liquid-crystal voltage range: 3.0 to

13.0 V max.

• Booster for liquid crystal voltage

— Two/three times (13 V max.)

• High-speed MPU bus interface

(2MHz at 5-V operation)

• Extension driver interface

• Character display and independent 60-icon mark

display possible

• Horizontal smooth scroll by 6-dot font width

display possible

• 80

×

8-bit display RAM (80 characters max.)

• 9,600-bit character generator ROM

— 240 characters (5

×

8 dot)

• 64

×

8-bit character generator RAM

— 8 characters (5

×

8 dot)

• 16

×

8-bit segment icon mark

— 96-segment icon mark

• 34-common

×

60-segment liquid crystal display

driver

• Programmable duty cycle

(See list 1)

• Software upwardly compatible with HD44780

• Wide range of instruction functions:

— Functions compatible with LCD-II: Display

clear, cursor home, display on/off, cursor

on/off, display character blink, cursor shift,

display shift

— Additional functions: Icon mark control, 4-

line display, horizontal smooth scroll, 6-dot

character width control, white-black invert-

ing blinking cursor

• Automatic reset circuit that initializes the con-

troller/driver after power on (standard version

only)

Features

• 5

×

8 dot matrix possible

• Clock-synchronized serial interface capability; can

interface with 4- or 8-bit MPU

HD66712

• Internal oscillator with an external resistor

• Low power consumption

• QFP 1420-128 pin, TCP-128 pin, bare-chip

List 1 Programmable Duty Cycles

5-Dot Font Width

Number

of Lines

1

2

4

Single-Chip Operation

Duty Ratio

1/17

1/33

Displayed Characters

One 24-character

line

Two 24-character

lines

Four 24-character

lines

Icons

60

With Extension Driver

Displayed Characters

One 52-character

line

Two 32-character

lines

Four 20-character

lines

Icons

80

6-Dot Font Width

Number

of Lines

1

2

4

Single-Chip Operation

Duty Ratio

1/17

1/33

Displayed Characters

One 20-character

line

Two 20-character

lines

Four 10-character

lines

Icons

60

With Extension Driver

Displayed Characters

One 50-character

line

Two 30-character

lines

Four 20-character

lines

Icons

96

Ordering Information

Type No.

HD66712A00FS

HD66712A00TA0

HD66712A00TB0*

HCD66712A00

HCD66712A01

HD66712A02FS

HCD66712A02

HCD66712A03

HD66712BxxFS

HCD66712Bxx

Package

QFP1420-128 (FP-128)

Standard TCP-128

Folding TCP-128

Chip

QFP1420-128 (FP-128)

Chip

QFP1420-128 (FP-128)

Chip

Japanese + European font

Custom font

Communication

European font

CGROM

Japanese standard

Note: Bxx = ROM code No.

*

Under development

417

HD66712

LCD-II Family Comparison

Item

Power supply voltage

LCD-II

(HD44780U)

2.7 V to 5.5 V

LCD-II/E20

(HD66702)

5 V ±10 %

(standard)

2.7 V to 5.5 V

(low voltage)

3.0 V to 8.3 V

20 characters

×

2 lines

LCD-II/F8

(HD66710)

2.7 V to 5.5 V

LCD-II/F12

HD66712

2.7 V to 5.5 V

Liquid crystal drive

voltage

Maximum display

digits per chip

3.0 V to 11 V

8 characters

×

2 lines

3.0 V to 13.0 V

16 characters

×

2 lines/

8 characters

×

4 lines

40 segments

1/17 and 1/33

9,600 bits

(240 5

×

8 dot

characters)

3.0 V to 13.0 V

24 characters

×

2 lines/

12 characters

×

4 lines

60 segments

1/17 and 1/33

9,600 bits

(240 5

×

8 dot

characters)

Segment display

Display duty cycle

CGROM

None

1/8, 1/11, and

1/16

9,920 bits

(208 5

×

8 dot

characters and

32 5

×

10 dot

characters)

64 bytes

80 bytes

None

40

16

A

External

(adjustable)

External resistor

or external clock

270 kHz ±30%

(59 to 110 Hz for

1/8 and 1/16 duty

cycle; 43 to 80

Hz for 1/11 duty

cycle)

91 kΩ: 5-V

operation;

75 kΩ: 3-V

operation

None

1/8, 1/11, and

1/16

7,200 bits

(160 5

×

7 dot

characters and

32 5

×

10 dot

characters)

64 bytes

80 bytes

None

100

16

B

External

(adjustable)

External resistor

or external clock

320 kHz ±30%

(70 to 130 Hz for

1/8 and 1/16 duty

cycle; 51 to 95

Hz for 1/11 duty

cycle)

68 kΩ: 5-V

operation;

56 kΩ: (3-V

operation)

CGRAM

DDRAM

SEGRAM

Segment signals

Common signals

Liquid crystal drive

waveform

Bleeder resistor for

LCD power supply

Clock source

R

f

oscillation frequency

(frame frequency)

64 bytes

80 bytes

8 bytes

40

33

B

External

(adjustable)

External resistor

or external clock

270 kHz ±30%

(56 to 103 Hz for

1/17 duty cycle;

57 to 106 Hz for

1/33 duty cycle)

91 kΩ: 5-V

operation;

75 kΩ: 3-V

operation

64 bytes

80 bytes

16 bytes

60

34

B

External

(adjustable)

External resistor

or external clock

270 kHz ±30%

(56 to 103 Hz for

1/17 duty cycle;

57 to 106 Hz for

1/33 duty cycle)

91 kΩ: 5-V

operation;

75 kΩ: 3-V

operation

R

f

resistance

418

HD66712

Item

Liquid crystal voltage

booster circuit

Extension driver control

signal

Reset function

LCD-II

(HD44780U)

None

Independent

control signal

Power on

automatic

reset

LCD-II

(HD44780)

1 or 2

None

Character unit

4 bits/8 bits

2 MHz: 5-V

operation;

1 MHz: 3-V

operation

QFP-1420-80

80-pin bare chip

LCD-II/E20

(HD66702)

None

Independent

control signal

Power on

automatic

reset

Fully compatible

with the LCD-II

1 or 2

None

Character unit

4 bits/8 bits

1 MHz

LCD-II/F8

(HD66710)

2–3 times step-

up circuit

Used in common

with a driver

output pin

Power on

automatic

reset

Upper

compatible with

the LCD-II

1, 2, or 4

Available

Dot unit

4 bits/8 bits

2 MHz: 5-V

operation;

1 MHz: 3-V

operation

QFP-1420-100

TQFP-1414-100

100-pin bare chip

LCD-II/F12

HD66712

2–3 times step-

up circuit

Independent

control signal

Power on

automatic reset

or Reset input

Upper compatible

with the LCD-II

1, 2, or 4

Available

Dot unit

Serial;

4 bits/8 bits

2 MHz: 5-V

operation;

1 MHz: 3-V

operation

QFP-1420-128

TCP-128

128-pin bare chip

Instructions

Number of displayed

lines

Low power mode

Horizontal scroll

Bus interface

CPU bus timing

Package

LQFP-2020–144

144-pin bare chip

419

HD66712

HD66712 Block Diagram

EXT

OSC1

OSC2

CPG

Reset circuit

ACL

RESET*

Timing generator

CL1

CL2

M

7

Instruction register

(I R)

Instruction

decoder

COM0–

COM33

34-bit

shift

register

Common

signal

driver

8

Address counter

7

RS/CS*

R/SCLK

RW/SID

System

interface

• Serial

• 4 bits

• 8 bits

Display data RAM

(DD RAM)

80

×

8 bits

D

7

8

SEG1–

SEG60

60-bit

shift

register

60-bit

latch

circuit

DB4–DB7

Input/

output

buffer

8

Data

register

(DR)

8

Busy

flag

3

7

8

Segment

signal

driver

DB3–DB0

8

DB0–SOD

Segment

RAM

(SGRAM)

16 bytes

Character

generator RAM

(CGRAM)

64 bytes

Character

generator ROM

(CGROM)

9,600 bytes

Cursor and

bling

controller

LCD drive

voltage

selector

Vci

C1

C2

V5OUT2

V5OUT3

Booster

5

5/6

Parallel/serial

converter

and smooth scroll circuit

V

CC

GND

V1

V2

V3

V4

V5

420

参数名称	属性值
零件包装代码	DIE
包装说明	DIE,
针数	128
Reach Compliance Code	unknown
JESD-30 代码	X-XUUC-N128
端子数量	128
封装主体材料	UNSPECIFIED
封装代码	DIE
封装形状	UNSPECIFIED
封装形式	UNCASED CHIP
认证状态	Not Qualified
表面贴装	YES
技术	CMOS
端子形式	NO LEAD
端子位置	UPPER
uPs/uCs/外围集成电路类型	DISPLAY CONTROLLER, DOT MATRIX LCD DRIVER
Base Number Matches	1

HCD66712A02

HCD66712A02概述

HCD66712A02规格参数

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