UPD78F9222
8-bit microcontrollers with 4KB flash memory for embedded systems
Manufacturer： ['renesas', 'nec']
series introduction
# Introduction to the UPD78F9222 Product Series
## 1. Overview
The UPD78F9222 product series is a remarkable line of microcontrollers developed by NEC Electronics (now Renesas Electronics). These microcontrollers are designed to offer high - performance, reliability, and flexibility for a wide range of applications. With a focus on meeting the diverse needs of modern electronic systems, the UPD78F9222 series combines advanced features with efficient power management, making it an ideal choice for various industries.
## 2. Key Features
### 2.1 CPU Core
- **High - Speed Performance**: The UPD78F9222 series is based on the 8 - bit 78K0R CPU core. This core provides a high - speed processing capability, with a maximum operating frequency of up to [X] MHz. The fast execution of instructions enables the microcontroller to handle complex tasks quickly, such as real - time data processing and control algorithms.
- **Rich Instruction Set**: It comes with a comprehensive instruction set that includes arithmetic, logical, and bit - manipulation instructions. This allows developers to write efficient code for a variety of applications, from simple control tasks to more sophisticated data - processing algorithms.
### 2.2 Memory
- **Flash Memory**: The microcontrollers in the UPD78F9222 series are equipped with on - chip flash memory. The flash memory capacity ranges from [X] KB to [Y] KB, providing sufficient space to store the application code. The flash memory is also reprogrammable, which allows for easy firmware updates during the product development cycle or in the field.
- **RAM**: There is also a certain amount of on - chip RAM, typically ranging from [A] KB to [B] KB. The RAM is used for storing temporary data during program execution, such as variables, buffers, and stack space.
### 2.3 Peripherals
- **Timer Modules**: The series includes multiple timer modules, such as general - purpose timers and watchdog timers. General - purpose timers can be used for tasks like generating accurate time delays, measuring time intervals, and generating PWM (Pulse Width Modulation) signals. The watchdog timer helps to ensure the reliability of the system by resetting the microcontroller if the program execution goes out of control.
- **Serial Communication Interfaces**: It offers a variety of serial communication interfaces, including UART (Universal Asynchronous Receiver - Transmitter), SPI (Serial Peripheral Interface), and I²C (Inter - Integrated Circuit). These interfaces enable the microcontroller to communicate with other devices, such as sensors, displays, and communication modules, facilitating data exchange and system integration.
- **Analog - to - Digital Converter (ADC)**: An on - chip ADC is provided, which can convert analog input signals into digital values. The ADC typically has a certain number of channels (e.g., [X] channels) and a resolution of [Y] bits. This feature is useful for applications that require the measurement of analog signals, such as temperature, voltage, and current.
### 2.4 Power Management
- **Low - Power Modes**: The UPD78F9222 series supports multiple low - power modes, such as standby mode and stop mode. In standby mode, the microcontroller can maintain certain functions while consuming very low power. In stop mode, most of the internal circuits are powered off, resulting in extremely low power consumption. These low - power modes are beneficial for battery - powered applications, as they help to extend the battery life.
## 3. Applications
### 3.1 Industrial Automation
- In industrial automation systems, the UPD78F9222 microcontrollers can be used for controlling motors, monitoring sensors, and managing communication between different devices on the factory floor.
Images for reference
20-DIP
20-SSOP
Image Preview