NJU6475B Datasheet, PDF (1/45 Pages) New Japan Radio – 12-Character 4-Line Dot Matrix Low Power LCD Controller Driver with key Scan Function

NJU6475B
12-Character 4-Line Dot Matrix Low Power
PRELIMINARY
LCD Controller Driver with key Scan Function
GENERAL DESCRIPTION
The NJU6475B is a Dot Matrix LCD Controller Driver for
12-character 4-line with Icon display in single chip. It contains
voltage converter, voltage regulator, bleeder resistance, CR
oscillator, instruction decoder, character generator ROM/RAM,
high voltage operation controller/driver and key scan circuit.
The voltage converter generates (about 8V) from the
supply voltage (3V) and regulated by the regulator. The bias
level of LCD driving voltage is generated of high value bleeder
resistance and the buffer amplifier matches the
impedance. 16-step contrast control function is incorporated
for its adjustment. Therefore, simple power supply circuit and
easy contrast adjustment are available. The complete CR
oscillator is incorporated without external components for
oscillation circuit. The microprocessor interface circuit which
operates by 1MHz, can be selected serial interface.
The character generator ROM consisting of 10,080bits stores
252 kinds of character Font.
Each 160bits CG RAM and Icon display RAM can story
4 kinds of special character to display on the dot matrix
display area or 128 kinds of Icon on the display area.
PACKAGE OUTLINE
NJU6475B
FEATURES
•12-Character 4-Line Dot Matrix LCD Controller Driver
•Maximum 128-Icon Display
•Serial CPU Interface
•Display Data RAM
- 48 x 8 Bits :Maximum 12-Character 4-Line Display
•Character Generator ROM
- 10,080 Bits:252 Characters (5 x 8 Dots)
•Character Generator RAM
- 32 x 5 Bits :4 Patterns (5 x 8 Dots)
•Icon Display RAM
- 32 x 5 Bits :Maximum 128-Icon
•High Voltage LCD Driver
: 37-Common/63-Segment
•Duty & Bias Ratio
: 1/36 duty 1/7Bias
•Useful Instruction Set
: Clear Display, Return Home, Display On/Off Control
Display Blink,Cursor Shift, Character Shift
•Common and Segment Driver location Order Select Function (Mode-A, Mode-B)
•Power On Reset Circuit On Chip
•Hardware Reset
•Voltage Regulator On Chip
•Electrical Variable Resistance On Chip
•32-key scan function (8 x 4 Matrix)
•Oscillation circuit On Chip
•Voltage Converter (Doubler,Tripler) On Chip
•Bleeder Resistance On Chip
•Low Oprating Current
•Operating Voltage
- 2.4V to 3.6V (Except For LCD Driving Voltage)
•Package Outline
- Bumped-Chip / TCP
•C-MOS Technology