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PDF NJU6637 Data sheet ( Hoja de datos )
| Número de pieza | NJU6637 | |
| Descripción | 16-CHARACTER 3-LINE DOT MATRIX LCD CONTROLLER DRIVER | |
| Fabricantes | New Japan Radio | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de NJU6637 (archivo pdf) en la parte inferior de esta página. Total 28 Páginas | ||
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Preliminary
NJU6637
Preliminary
16-CHARACTER 3-LINE DOT MATRIX LCD
CONTROLLER DRIVER
s GENERAL DESCRIPTION
The NJU6637 is a 1Chip Dot Matrix LCD controller
driver for up to 16-character 3-line display.
It contains microprocessor Interface circuits, Instruction
decoder controller, character generator ROM/RAM and
common and segment drivers.
The bleeder resistance generates for LCD Bias voltage
Internally.
The CR oscillator Incorporates C and R, therefore no
external components for oscillation are required.
The microprocessor Interface circuits which operate
1MHz frequency, can be connected directly to serial I/F
microprocessor.
The character generator consists of 10,200 bits ROM
and 8 x 5 bits RAM. The standard version ROM is
coded with 255 characters including capital and small
letter fonts.
The 24-common and 80-segment drive up to
16-character 3-line LCD panel which divided two
common electrode blocks.
The rectangle outlook is very applicable to COG.
s PACKAGE OUTLINE
NJU6637CH
s FEATURES
q 16-character 3-line Dot Matrix LCD Controller Driver
q Serial Direct Interface with Microprocessor
q Display Data RAM
:48 x 8 bits : Maximum 16-character 3line Display
q Character Generator ROM
:10,200 bits ; 255 characters for 5 x 8 dots
q Character Generator RAM
:8 x 5 bits ; 1 Patterns( 5 x 8 dots)
q Microprocessor direst accessing to Display Data RAM and Character Generator RAM
q High Voltage LCD Driver
:24-common / 80-segment
q Duty Ratio
:1/24 Duty
q Maximum Display Characters :48 Characters
q Common Driver Order Assignment by mask option
Version COM1 to COM24 (PAD Name)
NJU6637A COM1 to COM24
NJU6637B COM24 to COM1
q Useful Instruction Set
Clear Display, Returns Home, Display ON/OFF Cont, Cursor ON/OFF Cont, Display Blink, Cursor Shift,
Character Shift.
q Power On Reset / Hardware Reset Function
q Oscillation Circuit on chip
q Bleeder Resistance on chip
q Low Power Consumption
q Operating Voltage --- +3V
q Package Outline --- Bumped Chip
q C-MOS Technology
Ver.1.1
1 page  
Preliminary
NJU6637B Mode B (SEL=”H”)
DUMMY36
DUMMY37
DUMMY38
DUMMY39
DUMMY40
DUMMY41
DUMMY42
SEG72
NJU6637
DUMMY32
DUMMY31
DUMMY30
x
y
SEG1
DUMMY43
DUMMY44
DUMMY45
DUMMY46
DUMMY47
DUMMY48
DUMMY49
DUMMY50
DUMMY11
CS
SI
SCL
RS
RESET
SEL
TEST
VDD
VDD
VDD
VSS
VSS
VSS
V5
V5
V5
OSC2
OSC1
DUMMY10
DUMMY3
DUMMY2
1 DUMMY1
5 Page 
Preliminary
NJU6637
s FUNCTIONAL DESCRIPTION
(1)Description for each blocks
(1-1)Register
The NJU6637 incorporates two 8-bit registers, an Instruction Register (IR) and a Data Register (DR).
The Register (IR) stores Instruction codes such as “Clear Display” and “Return Home”, and address
data for Display Data RAM (DD RAM) and Character Generator RAM (CG RAM).
The Register (DR) is a temporary storing register, the data in the Register (DR) is written into the
DD RAM or CG RAM.
The data in the Register (DR) written by the MPU is transferred from the Register automatically to the
DD RAM or CG RAM by Internal operation.
These two registers are selected by the selection signal RS.
(1-2)Address counter (AC)
The address Counter (AC) addresses the DD RAM and CG RAM.
When the address setting instruction is written into the Register (IR), the address information is
transferred from Register (IR) to the counter (AC). The selection of either the DD RAM or CG RAM is
also determined by this instruction.
After writing (or reading) the display data to (or from) the DD RAM or CG RAM, the counter (AC)
increments (or decrements) “1” automatically.
(1-3)Display Data RAM (DD RAM)
The display data RAM (DD RAM) consisting of 48 x 8 bits stores up to 48-character display data
represented in 8-bit code.
The DD RAM address data set in the address Counter (AC) is represented in hexadecimal.
←Higher order bit
Lower order bit→
AC AC6 AC5 AC4 AC3 AC2 AC1 AC0
Hexadecimal
Hexadecimal
(Example) DD RAM address “ 08 ”
0001000
08
16-character 2-line Display
1st line
2nd line
3rd line
1
00
10
20
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ←Display position
01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F ←DD RAMaddress(Hex.)
11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F
21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F
The relation between DD RAM address and display position on the LCD shown below.
[ Left Shift Display ]
(00) ← 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 00
(10) ← 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 10
(20) ← 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 20
[ Right Sift Display ]
0F 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E → (0F)
1F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E → (1F)
2F 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E → (2F)
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet NJU6637.PDF ] | |
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