Hi readers welcome to the new post. Here we will discuss W78E052DDG Microcontroller. It is a certain category of controllers that has compatibility to the 8052 controllers. It is an eight-bit controller that comes with eight KB flash memory. It comprises the two fifty-six bytes of the random access memory unit,
It also has a timer of sixteen bits that comes with a hardware watchdog. In this tutorial, we will discuss the different factors of this microcontroller with detail. So let get started.
Introduction to the W78E052DDG
- W78E052DDG is a microcontroller that has compatibility with the very commonly used structure of controller 8052 also has a ram having a capacity of two fifty-six bytes eight bits two-dimensional input and output ports, denoted as P0, P1, P2, P3, and 4-bit I/O port P4. The fourth 16-bit timer/counters, a hardware watchdog timer, and a serial port make this microcontroller easy to integrate with multiple applications.
- This tutorial is related to firmware for the W78E052DDG. It is based on a pre-release version of firmware that supports two different model lines of the W78E052DDG.
- The firmware upgrade instructions from version 1.9 to version 2.2 are included in the version used in this article.
- The example of software given with this module is followed the 1.9 addition of firmware. The version is not now used commonly or is quite old. The latest firmware release is 2.
Introduction to microcontroller programming?
- You can quickly convert an ordinary digital watch into a programmable watch by hacking it. Instead of a CPU, your watch uses a 16-bit LCD display, 64 bytes of programmable RAM, and 8 bytes of flash memory
- The programmable RAM is accessible from the microcontroller and the screen by reading data via two RS232 serial ports. One port connects to your computer, the other to the watch.
- For the programming phase, a microcontroller and its display are connected via 8-bit serial interfaces to one another and an 8-bit microcontroller serial to 8-bit computer interface, typically USB.A microcontroller’s 8-bit UART interface can be used to serially program a watch, or the microcontroller’s 8-bit I/O port can be used to program a watch by reading 8-bit I/O data from the watch.
Features of the W78E052DDG Microcontroller
- Here some features listed
- 8-bit CPU
- Operating frequency up to 40 MHz
- 64 KB of program memory
- 2 KB of RAM
- 4 KB of EEPROM
- Up to 4 serial ports
- 10-bit ADC
- PWM output
- Up to 5 timers/counters
- On-chip watchdog timer
- Low power consumption
W78E052DDG microcontroller Pinout
|Pin Number||Pin Name||Description|
|1||P3.0||General-purpose I/O pin|
|2||P3.1||General-purpose I/O pin|
|3||P3.2||General-purpose I/O pin|
|4||P3.3||General-purpose I/O pin|
|5||P3.4||General-purpose I/O pin|
|6||P3.5||General-purpose I/O pin|
|7||P3.6||General-purpose I/O pin|
|8||P3.7||General-purpose I/O pin|
|9||XTAL1||Crystal oscillator input|
|10||XTAL2||Crystal oscillator output|
|11||EA||External Access input|
|12||PSEN||Program Store Enable input|
|13||ALE||Address Latch Enable output|
|15||P0.0||General-purpose I/O pin|
|16||P0.1||General-purpose I/O pin|
|17||P0.2||General-purpose I/O pin|
|18||P0.3||General-purpose I/O pin|
|19||P0.4||General-purpose I/O pin|
|20||P0.5||General-purpose I/O pin|
|21||P0.6||General-purpose I/O pin|
|22||P0.7||General-purpose I/O pin|
|24||VDD||Power supply voltage|
|25||P1.0||General-purpose I/O pin|
|26||P1.1||General-purpose I/O pin|
|27||P1.2||General-purpose I/O pin|
|28||P1.3||General-purpose I/O pin|
|29||P1.4||General-purpose I/O pin|
|30||P1.5||General-purpose I/O pin|
|31||P1.6||General-purpose I/O pin|
|32||P1.7||General-purpose I/O pin|
|34||P2.0||General-purpose I/O pin|
|35||P2.1||General-purpose I/O pin|
|36||P2.2||General-purpose I/O pin|
|37||P2.3||General-purpose I/O pin|
|38||P2.4||General-purpose I/O pin|
|39||P2.5||General-purpose I/O pin|
|40||P2.6||General-purpose I/O pin|
|41||P2.7||General-purpose I/O pin|
|42||INT0||External interrupt 0 input|
|43||INT1||External interrupt 1 input|
|44||T0||Timer/Counter 0 input/output|
|45||T1||Timer/Counter 1 input/output|
Alternative of W78E052DDG
|microcontroller||Manufacturer||Architecture||Flash Memory||RAM||Communication Protocols||Bit Width||Operating Voltage||Max Speed|
|Atmel AT89S52||Atmel||8051||8KB||256 bytes||UART, SPI, I2C||8-bit||2.7V – 5.5V||33MHz|
|Microchip PIC16F877A||Microchip||PIC||14KB||368 bytes||UART, SPI, I2C||8-bit||4.5V – 5.5V||20MHz|
|NXP LPC2148||NXP||ARM7TDMI-S||512KB||32KB||USB, Ethernet||32-bit||2.0V – 3.6V||60MHz|
|STMicroelectronics STM32F103||STMicroelectronics||ARM Cortex-M3||Up to 128KB||Up to 20KB||USB, Ethernet||32-bit||2.0V – 3.6V||72MHz|
Step-by-step guide to program the W78E052DDG
- Here we’ll cover each of the 16 I/O pins on the W78E052DDG. Each of these pins is mapped in relation to its specific function in the operating system.
- For example, the I2C pins are mapped to two serial ports. In the following, we’ll go through the steps to program the W78E052DDG in BASIC. Pins I2C P0, P1, P2, P3, P4, P5, P6, P7, P8, P9, P10, P11, P12, and P13 are the names of the W78E052DDG’s 16 I2C pins.
We will use a series of commands to control the I2C pins.
- The four major registers are numbered 0, 1, 2, and 3, and each command corresponds to one of them.
Architecture of the W78E052DDG Microcontroller
|Processor Core||8051 Core|
|CPU Speed||Up to 25 MHz|
|Data Bus Width||8-bit|
|Address Bus Width||16-bit|
|Instruction Set||8051 Instruction Set|
|On-Chip Memory||32 KB Flash, 256 B RAM|
|External Memory||Up to 64 KB|
|Timers/Counters||3 Timers, 1 Watchdog Timer, 2 Capture/Compare Units|
|Serial Interfaces||UART, SPI, I2C|
|Parallel Interfaces||4 8-bit I/O Ports, 1 4-bit I/O Port|
|Operating Voltage||2.4V to 5.5V|
|Power Consumption||6 mA at 5V, 25 MHz (typical)|
|Operating Temperature||-40°C to 85°C|
Applications of W78E052DDG
- It is employed in input and output functions
- It is used to make keypad interfacing.
- It is used in embedded modules.
- Work in the multi-segment display.
Advantages of the W78E052DDG Microcontroller
The W78E052DDG microcontroller advantages are listed here
- Low power consumption
- Rich set of peripherals
- Large program memory
- Easy to use and program