Configuracion del lcd hitachi

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HD44780U (LCD-II)
(Dot Matrix Liquid Crystal Display Controller/Driver)

ADE-207-272(Z) '99.9 Rev. 0.0 Description
The HD44780U dot-matrix liquid crystal display controller and driver LSI displays alphanumerics, Japanese kana characters, and symbols. It can be configured to drive a dot-matrix liquid crystal display under the control of a 4- or 8-bit microprocessor. Since all the functionssuch 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 minimal system can be interfaced with this controller/driver. A single HD44780U can display up to one 8-character line or two 8-character lines. The HD44780U has pin function compatibility with the HD44780S which allows the user to easilyreplace an LCD-II with an HD44780U. The HD44780U character generator ROM is extended to generate 208 5 × 8 dot character fonts and 32 5 × 10 dot character fonts for a total of 240 different character fonts. The low power supply (2.7V to 5.5V) of the HD44780U is suitable for any portable battery-driven product requiring low power dissipation.

Features
• 5 × 8 and 5 × 10 dot matrix possible •Low power operation support:  2.7 to 5.5V • Wide range of liquid crystal display driver power  3.0 to 11V • Liquid crystal drive waveform  A (One line frequency AC waveform) • Correspond to high speed MPU bus interface  2 MHz (when VCC = 5V) • 4-bit or 8-bit MPU interface enabled • 80 × 8-bit display RAM (80 characters max.) • 9,920-bit character generator ROM for a total of 240 character fonts 208 character fonts (5 × 8 dot)  32 character fonts (5 × 10 dot)

1

HD44780U
• 64 × 8-bit character generator RAM  8 character fonts (5 × 8 dot)  4 character fonts (5 × 10 dot) • 16-common × 40-segment liquid crystal display driver • Programmable duty cycles  1/8 for one line of 5 × 8 dots with cursor  1/11 for one line of 5 × 10 dots with cursor  1/16 for two lines of 5 × 8 dotswith cursor • Wide range of instruction functions:  Display clear, cursor home, display on/off, cursor on/off, display character blink, cursor shift, display shift • Pin function compatibility with HD44780S • Automatic reset circuit that initializes the controller/driver after power on • Internal oscillator with external resistors • Low power consumption

Ordering Information
Type No.HD44780UA00FS HCD44780UA00 HD44780UA00TF HD44780UA02FS HCD44780UA02 HD44780UA02TF HD44780UBxxFS HCD44780UBxx HD44780UBxxTF Note: xx: ROM code No. Package FP-80B Chip TFP-80F FP-80B Chip TFP-80F FP-80B Chip TFP-80F CGROM Japanese standard font

European standard font

Custom font

2

HD44780U
HD44780U Block Diagram
OSC1 OSC2 CL1 CL2 M CPG Instruction register (IR)
7

Reset circuit ACLTiming generator

D

8

RS R/W E

MPU interface

Instruction decoder

Display data RAM (DDRAM) 80 × 8 bits

16-bit shift register

Common signal driver

COM1 to COM16

Address counter DB4 to DB7 DB0 to DB3 Input/ output buffer
8 7 7 8

7 8

40-bit shift register

40-bit latch circuit

Segment signal driver

SEG1 to SEG40

Data register (DR)

40 8 8

Busy flagCharacter generator RAM (CGRAM) 64 bytes
5

LCD drive voltage selector

GND

Character generator ROM (CGROM) 9,920 bits
5

Cursor and blink controller

Parallel/serial converter and attribute circuit VCC V1 V2 V3 V4 V5

3

HD44780U
HD44780U Pin Arrangement (FP-80B)
SEG23 SEG24 SEG25 SEG26 SEG27 SEG28 SEG29 SEG30 SEG31 SEG32 SEG33 SEG34 SEG35 SEG36 SEG37 SEG38
80 79 78 77 76 75 74 7372 71 70 69 68 67 66

SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 GND OSC1

65

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40

64 63 62 61 60 59 58 57 56 55 54

FP-80B (Top view)

53 52 51 50 49 48 47 46 45 44 43 42 41

SEG39 SEG40 COM16...
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