HD44780U 查看數據表（PDF） - Hitachi -> Renesas Electronics

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HD44780U

Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function

Hitachi -> Renesas Electronics 

HD66727

• 11,520-bit character generator ROM

 240 characters (6 × 8 dots)

• 32 × 6-bit character generator RAM

 4 characters (6 × 8 dots)

• 8 × 6-bit segment RAM

 40 segment-icons and marks max

• 60-segment × 34-common liquid crystal display driver

• Programmable display sizes and duty ratios (see Table 1)

• Vertical smooth scroll

• Vertical double-height display of all character fonts

• Horizontal double display with dedicated character fonts (6-dot font width used)

• Wide range of instruction functions:

 Clear display, display on/off control, icon and mark control, character blink, white-black inverting

blinking cursor, icon and mark blink, return home, cursor on/off, white-black inverting raster-row

• Internal oscillation with an external resistor

• Hardware reset

• Wide range of LCD drive voltages

 3.0V to 13.0V

• Slim chip with bumps for chip-on-glass (COG) mounting, slim chip without bumps for chip-on-board

(COB) mounting, and tape carrier package (TCP) (under development)

Table 1 Programmable Display Sizes and Duty Ratios

Display

Size

Duty

Ratio

Oscillation

Frequency

Current

Consumption

Multi-

Static-

plexed- Drive

Drive

Annu- Scanned

Segments nciators Keys

1 line × 12 1/10 40 kHz

characters

8 µA

40

12

32 (4 × 8)

2 lines × 12 1/18 80 kHz

characters

15 µA

40

12

32 (4 × 8)

3 lines × 12 1/26 120 kHz

characters

23 µA

40

12

32 (4 × 8)

4 lines × 12 1/34 160 kHz

characters

30 µA

40

12

32 (4 × 8)

Note: Current consumption excludes that for LCD power supply source; VCC = 3V.

LED

Drive

3

3

3

3

General

Port

3

3

3

3

2

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