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 eight-bit controller that comes with the eight KB flash memory. It comprises the two fifty-six bytes of random access memory unit,

It also has a timer of sixteen bits that comes with a hardware watchdog. In this tutorial, we will discuss different factors of this microcontroller with the details. 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 version used in this article includes the instructions for upgrading the firmware from version 1.9 to 2.2.
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. Your watch has no microprocessor but uses a 16-bit LCD display with 64 bytes of programmable RAM and 8 bytes of flash memory (SDRAM).

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 watch can be programmed via serial through a microcontroller’s 8-bit UART interface or programmable through its 8-bit I/O port by reading 8-bit I/O data from the watch.

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 a 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. I2C Pins The 16 I2C pins on the W78E052DDG are identified as P0, P1, P2, P3, P4, P5, P6, P7, P8, P9, P10, P11, P12, and P13. We will use a series of commands to control the I2C pins.
Each command corresponds to one of the 4 main registers and are numbered 0, 1, 2, 3.