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PCF2104CU の電気的特性と機能

PCF2104CUのメーカーはNXP Semiconductorsです、この部品の機能は「LCD controller/driver」です。


製品の詳細 ( Datasheet PDF )

部品番号 PCF2104CU
部品説明 LCD controller/driver
メーカ NXP Semiconductors
ロゴ NXP Semiconductors ロゴ 




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PCF2104CU Datasheet, PCF2104CU PDF,ピン配置, 機能
INTEGRATED CIRCUITS
DATA SHEET
PCF2104x
LCD controller/driver
Product specification
Supersedes data of 1997 Apr 01
File under Integrated Circuits, IC12
1997 Dec 16

1 Page





PCF2104CU pdf, ピン配列
Philips Semiconductors
LCD controller/driver
Product specification
PCF2104x
1 FEATURES
Single chip LCD controller/driver
1 or 2-line display of up to 24 characters per line, or
2 or 4 lines of up to 12 characters per line
5 × 7 character format plus cursor; 5 × 8 for kana
(Japanese syllabary) and user-defined symbols
On-chip:
– generation of intermediate LCD bias voltages
– oscillator requires no external components (external
clock also possible)
Display data RAM: 80 characters
Character generator ROM: 240 characters
Character generator RAM: 16 characters
4 or 8-bit parallel bus or 2-wire I2C-bus interface
CMOS/TTL compatible
32 row, 60 column outputs
MUX rates 1 : 32 and 1 : 16
Uses common 11 code instruction set
Logic supply voltage range, VDD VSS: 2.5 to 6 V
Display supply voltage range, VDD VLCD: 3.5 to 9 V
Low power consumption.
I2C-bus address: 011101 SA0.
2 APPLICATIONS
Telecom equipment
Portable instruments
Point-of-sale terminals.
3 GENERAL DESCRIPTION
The PCF2104x integrated circuit is similar to the
PCF2114x (described in the “PCF2116 family” data sheet)
but does not contain the high voltage generator of that
device.
The PCF2104x is optimized for chip-on-glass applications.
The ‘x’ in ‘PCF2104x’ represents a specific letter code for
a character set in the character generator ROM (CGROM).
Two standard character sets are currently available,
specified by the letters ‘C’ and ‘L’ (see Figs 5 and 6).
Other character sets are available on request.
The PCF2104x is a low-power CMOS LCD controller and
driver, designed to drive a split screen dot matrix LCD
display of 1 or 2 lines by 24 characters or 2 or 4 lines by
12 characters with a 5 × 8 dot format. All necessary
functions for the display are provided in a single chip,
including on-chip generation of LCD bias voltages which
results in a minimum of external components and lower
system power consumption. To allow partial VDD shutdown
the ESD protection system of the SCL and SDA pins does
not use a diode connected to VDD.
The chip contains a character generator and displays
alphanumeric and kana characters. The PCF2104x
interfaces to most microcontrollers via a 4 or 8-bit bus, or
via the 2-wire I2C-bus.
3.1 Packages
PCF2104xU/2; chip with bumps in tray
PCF2104xU/7; chip with bumps on tape.
For further details see Chapter 18.
3.2 Available types
PCF2104CU/x: character set ‘C’ in CGROM
PCF2104LU/x: character set ‘L’ in CGROM
PCF2104NU/x: character set ‘N’ in CGROM.
4 ORDERING INFORMATION
TYPE NUMBER
PCF2104CU/2
PCF2104CU/7
PCF2104LU/2
PCF2104LU/7
PCF2104NU/2
PCF2104NU/7
NAME
PACKAGE
DESCRIPTION
chip with bumps in tray
chip with bumps on tape
chip with bumps in tray
chip with bumps on tape
chip with bumps in tray
chip with bumps on tape
1997 Dec 16
3
VERSION


3Pages


PCF2104CU 電子部品, 半導体
Philips Semiconductors
LCD controller/driver
Product specification
PCF2104x
7.8 OSC: oscillator
When the on-chip oscillator is used, this pin must be
connected to VDD. An external clock signal, if used, is input
at this pin.
8.2 Oscillator
The on-chip oscillator provides the clock signal for the
display system. No external components are required.
Pin OSC must be connected to VDD.
7.9 SCL: serial clock line
Input for the I2C-bus clock signal.
7.10 SDA: serial data line
Input/output for the I2C-bus data line.
7.11 SA0: address pin
The hardware sub-address line is used to program the
device sub-address for 2 different PCF2104xs on the
same I2C-bus.
7.12 T1: test pad
Must be connected to VSS. Not user accessible.
8 FUNCTIONAL DESCRIPTION (see Fig.1)
8.1 LCD bias voltage generator
The intermediate bias voltages for the LCD display are
also generated on-chip. This removes the need for an
external resistive bias chain and significantly reduces the
system power consumption. The optimum levels depend
on the multiplex rate and are selected automatically when
the number of lines in the display is defined.
The optimum value of VOP depends on the multiplex rate,
the LCD threshold voltage (Vth) and the number of bias
levels. The relationships are given in Table 1.
Using a 5-level bias scheme for 1 : 16 MUX rate allows
VOP < 5 V for most LCD liquids. The effect on the display
contrast is negligible.
Table 1 Optimum values for VOP
MUX
RATE
NUMBER
OF BIAS
LEVELS
VOP/Vth
DISCRIMINATION
Von/Voff
1 : 16
1 : 32
5
6
3.67
5.19
1.277
1.196
8.3 External clock
If an external clock is to be used, it must be input at
pin OSC. The resulting display frame frequency is given by
fframe = 12304fosc. A clock signal must always be present,
otherwise the LCD may be frozen in a DC state.
8.4 Power-on reset
The Power-on reset block initializes the chip after
power-on or power failure.
8.5 Registers
The PCF2104x has two 8-bit registers, an instruction
register (IR) and a data register (DR). The register select
signal (RS) determines which register will be accessed.
The instruction register stores instruction codes such as
display clear and cursor shift, and address information for
the Display Data RAM (DDRAM) and Character Generator
RAM (CGRAM). The instruction register can be written to,
but not read from, by the system controller.
The data register temporarily stores data to be read from
the DDRAM and CGRAM. When reading, data from the
DDRAM or CGRAM (corresponding to the address in the
Address Counter) is written to the data register prior to
being read by the ‘Read data’ instruction.
8.6 Busy Flag
The Busy Flag indicates the free/busy status of the
PCF2104x. Logic 1 indicates that the chip is busy and
further instructions will not be accepted. The Busy Flag is
output at pin DB7 when RS = logic 0 and R/W = logic 1.
Instructions should only be written after checking that the
Busy Flag is at logic 0 or waiting for the required number
of clock cycles.
1997 Dec 16
6

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
PCF2104C

LCD controller/driver

NXP Semiconductors
NXP Semiconductors
PCF2104CU

LCD controller/driver

NXP Semiconductors
NXP Semiconductors


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