Here is a detailed HTML-formatted technical summary for the **ST72272** microcontroller: ```html

ST72272 Microcontroller Technical Summary

Overview

The ST72272 is a member of the ST7 family of 8-bit HCMOS microcontrollers (MCUs) designed for embedded applications requiring robust performance and integrated peripherals. It features a dedicated D/A converter, multiple PWM channels, and a rich set of on-chip peripherals, making it suitable for industrial control, automotive systems, and consumer electronics.

Key Highlights

• Architecture: 8-bit ST7 core with enhanced instruction set
• Operating Voltage: 4.0V to 5.5V
• CPU Frequency: Up to 8 MHz (24 MHz crystal oscillator)
• Temperature Range: 0°C to +70°C
• Package Options: SO34, SDIP32, PSDIP32, CSDIP32

Features

Core & Memory

• Program Memory: 8K (ST72272K2) or 16K (ST72272K4) bytes
• RAM: 384 bytes (256-byte stack) or 512 bytes (256-byte stack)
• CPU Registers: Accumulator, Index registers, condition codes, and stack pointer

Peripherals

• 10-bit D/A Converter: 4 PWM channels
• 8-bit A/D Converter: 4 input channels
• 16-bit Timer: Input capture, output compare, and PWM generation
• I²C Interface: Multimaster support
• Watchdog Timer (WDG): Configurable timeout
• I/O Ports: Up to 24 programmable pins

Power Management

• Power-Saving Modes: Slow, Wait, and Halt modes
• Clock System: External crystal or internal oscillator

Applications

The ST72272 is ideal for applications requiring analog signal processing, motor control, and communication interfaces. Common use cases include:

• Industrial automation (sensor interfacing, actuator control)
• Automotive systems (dashboard controls, lighting)
• Consumer electronics (appliances, remote controls)
• Embedded systems with PWM-driven outputs (LED dimming, motor speed control)

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage (V_DD): -0.3V to +7.0V
• Input Voltage (V_IN): -0.3V to V_DD + 0.3V
• Operating Temperature: 0°C to +70°C
• Storage Temperature: -65°C to +150°C

Recommended Operating Conditions

• Supply Voltage (V_DD): 4.0V to 5.5V
• CPU Frequency: 0 to 8 MHz
• I/O Pin Current: ±10 mA (max per pin)

DC Electrical Characteristics

• Input High Voltage (V_IH): 0.7V_DD to V_DD
• Input Low Voltage (V_IL): 0 to 0.3V_DD
• Output High Voltage (V_OH): V_DD - 0.5V (I_OH = -1.6 mA)
• Output Low Voltage (V_OL): 0.4V (I_OL = 1.6 mA)

A/D Converter Characteristics

• Resolution: 8-bit
• Conversion Time: 20 µs (typical)
• Input Voltage Range: 0V to V_DD

PWM (DAC) Characteristics

• Resolution: 10-bit
• Output Frequency: Configurable via timer prescaler

I²C Characteristics

• Compliance: I²C Standard (100 kHz) and Fast Mode (400 kHz)
• Multimaster Support: Yes

Package Information

Available Packages

• SO34: 34-pin Small Outline
• SDIP32: 32-pin Shrink Dual In-line Package
• PSDIP32: 32-pin Plastic DIP
• CSDIP32: 32-pin Ceramic DIP

Mechanical Data

• SO34 Dimensions: 22.2 mm × 10.2 mm × 2.35 mm
• SDIP32 Dimensions: 41.4 mm × 10.16 mm × 3.9 mm
• Pin Pitch: 1.27 mm (SO34), 2.54 mm (DIP variants)

Ordering Information

The ST72272 is available in multiple configurations:

• ST72272K2: 8K program memory, 384 bytes RAM
• ST72272K4: 16K program memory, 512 bytes RAM

For custom code transfers or bulk orders, contact STMicroelectronics or authorized distributors.

Conclusion

The ST72272 microcontroller combines a flexible CPU core with a rich peripheral set, making it a versatile choice for embedded designs requiring analog and digital control. Its power-saving modes, robust I/O, and communication interfaces ensure efficient operation in diverse applications.

``` This HTML document provides a comprehensive technical summary of the ST72272 microcontroller, covering its features, electrical specifications, package details, and applications. The structure uses semantic HTML tags (`

`, `

`, `

`, `

`, `
• `) for clarity and readability. Let me know if you'd like any modifications!