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ST72C254G1B6 from ST,ST Microelectronics

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ST72C254G1B6

Manufacturer: ST, STM

8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI,

Partnumber Manufacturer Quantity Availability
ST72C254G1B6 ST, STM 194 In Stock

Description and Introduction

8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI, The **ST72C254G1B6** is a microcontroller from STMicroelectronics (STM) based on the **ST7 core**. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Core:** 8-bit ST7  
- **Operating Voltage:** 4.5V to 5.5V  
- **Clock Speed:** Up to 8 MHz  
- **Program Memory (Flash):** 8 KB  
- **RAM:** 384 bytes  
- **EEPROM:** 256 bytes  
- **Timers:**  
  - 8-bit timer with 7-bit prescaler  
  - 16-bit timer with 3-bit prescaler  
- **ADC:** 8-bit, 8-channel  
- **Communication Interfaces:**  
  - SPI (Serial Peripheral Interface)  
  - SCI (Serial Communication Interface)  
- **I/O Ports:** Up to 32 programmable I/O pins  
- **Packaging:** DIP-32 (Dual In-line Package)  

### **Descriptions:**
- The **ST72C254G1B6** is designed for embedded applications requiring moderate processing power and peripheral integration.  
- It features an **8-bit ST7 core** with an efficient instruction set for low-power and cost-sensitive designs.  
- Includes **on-chip Flash memory** for program storage and **EEPROM** for data retention.  
- Suitable for industrial control, consumer electronics, and automotive applications.  

### **Features:**
- **Low-power modes** (Wait, Halt) for energy efficiency.  
- **Watchdog timer** for system reliability.  
- **On-chip oscillator** with optional external clock.  
- **Robust I/O structure** with high sink/source capability.  
- **Industrial temperature range** (-40°C to +85°C).  

This microcontroller is part of STM's **ST7 family**, optimized for embedded control applications.  

(Note: For detailed pinout and application notes, refer to the official STMicroelectronics datasheet.)

Application Scenarios & Design Considerations

8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, ADC, 16-BIT TIMERS, SPI,

Alternative Part Number

  • ST72F324K6T6 --: Same ST7 8-bit core family with similar Flash/RAM and peripherals; different series prefix (F324 vs C254) and pin-compatible package options make it a strong drop-in candidate after pinout verification.
  • STM8S003F3P6 --: ST's modern 8-bit MCU successor line with comparable I/O, timers, and memory; different naming series (STM8S) and widely available, suitable as a functional replacement with minor firmware porting.
  • PIC16F886-I/SP --: Cross-vendor 8-bit MCU with similar pin count, Flash, and peripheral mix; clearly different naming and vendor, usable as an alternative when ST parts are unavailable, requiring firmware rewrite.
  • ST72F324J6T6 --: Same ST7 8-bit core family with comparable Flash/RAM and peripherals; different series naming makes it easy to distinguish, and it is a common drop-in choice for ST72C254 designs.
  • STM8S208RBT6 --: STMicroelectronics' newer 8-bit MCU line intended as a migration path from ST7; similar I/O and peripheral set with better availability and tool support.
  • AT89C51AC3-RLTIM --: Widely available 8051-compatible 8-bit MCU with comparable Flash and I/O resources; a practical cross-vendor fallback when ST7 parts are hard to source.

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