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NT3881DH-02 Datasheet

  • NT3881DH-02

  • Dot Matrix LCD Controller and Driver

  • 29頁

  • ETC

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NT3881D
Dot Matrix LCD Controller and Driver
Features
!
Internal LCD drivers
16 common signal drivers
40 segment signal drivers
(can be externally extended to 400 segments
using NT3882)
!
Maximum display dimensions
40 characters * 2 lines or
80 characters * 1 line
!
Interfaces with 4-bit or 8-bit MPU
!
Versatile display functions provided on chip:
Display Clear, Cursor Home, Display ON/OFF,
Cursor ON/OFF, Character Blinking, Cursor
Shift, and Display Shift
!
Three duty factors, selected by PROGRAM:
1/8, 11/11, and 1/16
!
Displays Data RAM (DD RAM): 80 X 8 bits
(displays up to 80 characters)
!
Character Generator RAM (CG RAM):
64 X 8 bits for general data,
8 5 X 8 programmable dot patterns, or
4 5 X 10 programmable dot patterns
!
Low voltage reset
!
NOVATEK Identification code
!
Bonding option for A-type and B-type waveform
!
Character Generator ROM (CG ROM):
3 kinds of CG ROM sizes:
192 characters:
160 5 X 8 dot patterns
32 5 X 10 dot patterns
240 characters:
192 5 X 8 dot patterns
48 5 X 10 dot patterns
256 characters:
192 5 X 8 dot patterns
64 5 X 10 dot patterns
Custom CG ROM is also available
!
Built-in power-on reset function
!
Logic power supply: single +5V supply
!
LCD driver power supply: V
1
- V
5
(V
DD
+0.3 - V
DD
-13.5)
!
Three oscillator operations
(Freq. = 250KHz - 270KHz):
鈥?/div>
Internal oscillation
鈥?/div>
Ceramic resonator
鈥?/div>
External clock
!
CMOS Process
!
Available in 80-pin QFP or in CHIP FORM
General Description
The NT3881D is a dot matrix LCD controller and driver
LSI that can operate with either a 4-bit or an 8-bit
microprocessor (MPU). NT3881D receives control
character codes from the MPU, stores them in an internal
RAM (up to 80 characters), transforms each character
code into a 5 X 7, 5 X 8, or 5 X 10 dot matrix character
pattern, and then displays the codes on the LCD panel.
The built-in Character Generator ROM consists of 256
different character patterns.
The NT3881D also contains Character Generator RAM
where the user can store 8 different character patterns at
run time. These memory features make character display
flexible. NT3881D also provides many display instructions
to achieve versatile LCD display functions. The NT3881D
is fabricated on a single LSI chip using the CMOS
process, resulting in very low power requirements.
With several NT3882 driver ICs connected to the
NT3881D, up to 80 characters can be displayed.
1
V2.4

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