The Engineering Projects

Introduction to PT2272

Hello friends, I hope you all are doing great. In today’s tutorial, we will have a look at Introduction to PT2272. It is a CMOS (complementary metal-oxide-semiconductor) that use to design simple wireless controlling of instruments installed at some distance. This module is normally used for controlling the circuits of garage door, speed control of the fan, robots and for monitoring the alarm connected at different places for security purposes. This integrated circuitry uses non-variable code address and no built-in encryption due to these parameters it not used for such circuits where high security is need but uses only for small or less cost security circuits such as used in home security alarms etc. In today's post, we will have a look at its working, pinout,  applications and some other related parameters. So let's get started with the Introduction to PT2272.

Introduction to PT2272

• The PT2272 is a decoder coupled with the PT2262 use the complementary metal-oxide-semiconductor technique.
• The use of PT2262 with this module to work as a transmitter for the PT2272 that work as a receiver and decodes the data sent by the transmitter.
• The output pinouts of this module are transistor-transistor logic that can be connected with the other circuitry and microcontroller.

• The operating voltage of the transmitter (PT2262) is five volts to twelve volts dc and the operation voltage of PT2272 are also five volts dc.
• This module consists of twelve bits of tri-state address pinout that offers three hundred twelve address codes.
• This module has features like large no of output data pinouts, latching and temporary output.
• The complementary metal-oxide-semiconductor technique (CMOS) technique used in this module offered the use of less power, less sound to noise ratio, twelve tri-state address pinouts, six data pinouts many ranges of voltages operation.
• This integrated circuitry is the finest option for security circuits used in different vehicles like cars, door alarm, robotic controls and some other home automation circuits.

Pinouts of PT2272

• Now we discuss the pinouts of PT2272 with the detailed, that is described here with the detail.

Pin No:	Pin Name:	Parameters
A0 to A5	Input pinout	These pinouts are address pinouts. All these six pinouts are used to get input coming from the transmitter and then encode the data.
A6/D5 ~ A11/D0	Input and output pinouts	These 6 pinouts are used for such data that has a large number of bits and also on the type of PT2272 module used.
DIN	Input pinout	When these pinouts are operating as inputs, these pins behave as tri-state input pinouts and every pin can set at the three different levels one, zero and floating. If we use these six pinouts as When used as output pins, these pins are driven to VCC if (1) the address decoded from the waveform that was received matches the address setting at the address input pins, and (2) the corresponding data bits received is a “1” bit. Otherwise, they are driven to VSS.
OSC 1	input pinout	It is oscillator pinout no one.
OSC 2	Output pinout	It is oscillator pinout number two. A specific value of resistance connected among them finds the value of the fundamental frequency of PT2272.
VT	Output	This pinout is used for the output gain
VCC	-	At this terminal positive input is provided.
VSS	-	This terminal is used to provide a negative supply.
NC	-	This is open pinout.

Features of PT2272

• These are some features of PT2272 that are described here with the detailed.
• This module used complementary metal-oxide-semiconductor (CMOS) technique.
• This module used a small amount of energy for its operation.
• Its provides larger immunisation from the noise.

• This module has twelve tri-state code address pinouts.
• This module has six data pinouts.
• Its operating volt re from four to fifteen volts.
• This module also consists of a single resistance oscillator.
• It is also available in dual in-line package and in small outline package.
• Its operating span is from five volts to twelve volts.
• Its input voltage is five volts dc.
• This module has already assembled light-emitting diode on its assembly.
• This module also has four outputs of transistor-transistor logic.
• Its transmitter is dimensions are thirty-six milli-meter by twenty-six milli-meters.
• Its receiver dimensions are forty-five to twenty-six millimetres.

Absolute Maximum Ratings of PT2272

• Now we discuss the ratings of PT2272 with the detailed.

Parameter	Symbol	Rating
Input Voltage	Input voltage denoted as VI.	The value of these voltages is -0.3 VCC+0.3 volts.
Supply Voltage	Denoted as VCC	The value of voltage is -0.3 to 16 volts.
Storage Temperature	This temperature denoted as Tstg.	The temperature value is -65 to 150 Celsius.
Operating Temperature	It denoted as Topr.	Temperature value from -40  to +85 celsius.
Output Voltage	This voltage denoted as VO.	This temperature is from -0.3 VCC+0.3 volts.

DC Electrical Features of PT2272

• Now we discuss the pinouts of PT2272 with the detailed, that is described here with the detail.

Parameter	Symbol	Conditions
Supply Voltage	This voltage denoted as VCC.	-
Stand-by Current	This current is denoted as ISB.	The conditions for this voltage is VCC is twelve volts. DIN is zero volts. OSC1 is zero volts.
DOUT Output Driving Current	It denoted as IOH.	The voltage VCC is eight volts. The voltage VOH is four volts.
DOUT Output Sinking Current	It is denoted as IOL.	The value of VCC is five volts. The value of VOH three volts.
“H” Input Voltage	This input voltage is denoted as VIH.	VCC
“L” Input Voltage	VIL	VCC

Applications of PT2272

• These are some applications of PT2272 described with the detailed.
• It uses in circuits of a different security system.
• It is used in circuits of automatic on and off of garage door circuits.
• It used for the automatic control fan speed circuits.
• Security circuits of home.
• It used in different robotics circuits.
• It used in industries for the control of different machines.

It is the detailed tutorial on the PT2272 if you have any question about it ask in comments thanks for reading.

Introduction to LCD 20x4

Hello friends, I hope you all are doing great. In today’s tutorial, we will have a look at the Introduction to 20x4 LCD Module. The LCD stands for liquid crystal display, which works on the light modulation features of liquid crystals. It is available in electronic visible display, video display and flat panel display. There are numerous categories and features are exist in markets of LCD and you can see it on your mobile, laptop, computer and television screen.

The invention of LCD gives new life to electronic industries and replaces lED and gas plasma techniques. It also replaces the CTR (cathode ray) tube that is used for visual display. The input power consumed by the liquid crystal display is less than the light-emitting diode and plasma display. In today's post, we will have a look at 20 x 4 LCD, its features, working, applications, and practical implementation in different electronic devices. So let's get started with the Introduction to 20x4 LCD Module.

Introduction to 20 x 4 LCD Module

• In a 20x4 LCD module, there are four rows in display and in one row twenty characters can be displayed and in one display eighty characters can be shown.
• This liquid crystal module uses HDD44780 (It is a controller used to display monochrome text displays) parallel interfacing.

• The liquid crystal display interfacing code is easily accessible. We just required eleven input and output pinouts for the interfacing of the LCD screen.
• The input supply for this module is three volts or five volts, with that module other components like PIC, Raspberry PI, Arduino.
• Thie electronic device can be used in different embedded systems, industries, medical devices, and portable devices like mobile, watches, laptops.
• Liquid crystal display works on two types of the signal first one is data and the second one is for control.
• The existence of these signals can be identified through the on and off condition of RS pinout. Data can be read by pushing the Read/write pinout.

20x4 LCD Pinout

• These are some pinouts of 20x4 LCD modules that are described here in detail.

Pin No:	Pin Name:	Parameters
Pin#1	It is denoted as Vss	It is ground pinout potential at this pinout is zero.
Pin#2	It is denoted as Vdd	At this pinout, five volts are provided.
Pin#3	This pinout denoted as Vo	This pinout is used to set the contrast of the screen.
Pin#4	This pin denoted as RS	It is used to H/L register select signal.
Pin#5	It is denoted as R/W	It is used for H/L read/write signal.
Pin#6	This pinout denoted as E	It is used for H/L enable signal.
Pin#7-14	The pinouts from seven to fourteen are denoted as DB0 – DB7.	It is used for H/L data bus for 4-bit or 8-bit mode.
Pin#15	It identified as A (LED+)	It is used to set the backlight anode.
Pin#16	It is recognized as K (LED-).	It is used to set the backlight cathode.

Features of 20 x 4 LCD

• These are some features of 20 x 4 LCD modules that are described here in detail.
• The most important feature of this module is that it can display 80 characters at a time.
• The cursor of this module has 5x8 (40) dots.
• This module already assembled the controller of RW1063.
• This module operates on the plus five volts input supply and can also work on the plus three volts.
• The plus 3-volt pinout can also be used for the negative supply.
• The duty cycle of this module is one by sixteen (1/16).
• The light-emitting diode of this module can get supply from the pinout one, pinout two, pinout fifteen, pinout sixteen, or pinout A and K.

Electrical Characteristics of 20 x 4 LCD

• These are some pinouts of 20 x 4 LCD modules that are described here in detail.

Parameters	Symbol	Conditions
Input Voltage	It is denoted as VDD	The value of VDD is plus five volts.
Supply Current	It denoted as IDD	Its value is ten milliamperes.
LC Driving Voltage for Normal Temperature Version Module	Its symbol is VDD to V0.	Its value is 5.2 volts
LED Forward Voltage	It is denoted as VF.	Its value is 4.3V
LED Forward Current	It is denoted as IF.	Its value is 4.6V.
EL Supply Current	This pinout denoted as EL	VEL = 110 VAC, and four hundred frequency.

Absolute Maximum Ratings

• Now we discuss the maximum ratings of 20 x 4 LCD.

Parameters	Symbol	Conditions
Working temperature	It is denoted as Top	Its value is zero to a plus fifty-celsius degree.
Storage Temperature	It is denoted as Tst.	Its value is minus twenty Celsius to plus seventy Celsius.
Supply Voltage for Logic	It is denoted as Vi.	Its minimum value is Vss and the maximum value is equal to Vdd volts.
Supply Voltage for liquid crystal display	It is denoted as Vdd or Vss.	Its value is three volts to thirteen volts.

Advantages of 20 x 4 LCD

• These are some advantages of this module that are described in detail.
• It is less expensive, and lightweight as compared to the cathode ray tube display.
• It uses less power according to the brightness resolution.

• It produces less amount of heat due to less use of power.
• In this module, there is no geometric distortion.
• It can be constructed in any shape and size according to user requirements.
• The LCD used in the computer monitor uses twelve volts.

Disadvantages of 20 x 4 LCD

• Despite the advantages of this module, there are some problems created by this module that are described here.
• In some older LCD modules, there are some issues due to view angle and brightness.
• It loses brightness and operates at less response time with the increment of temperature.
• With the increment of the surrounding temperature, its contrast also disturbs.

It is a detailed tutorial on the 20x4 LCD module I have mentioned everything related to this Liquid crystal display. If you have any questions about it ask in the comments. Thanks for reading.