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The STC90C58AD is a microcontroller manufactured by STC Micro. Below are its specifications, descriptions, and features:

Specifications:

• Core: 8051-compatible
• Operating Voltage: 3.3V – 5.5V
• Clock Frequency: Up to 40MHz
• Flash Memory: 58KB (with ISP/IAP capability)
• RAM: 1280 bytes
• EEPROM: 4KB (optional)
• Timers: 4 (Timer 0, Timer 1, Timer 2, and WDT)
• I/O Ports: 32 (4 ports: P0, P1, P2, P3)
• UART: 2 (UART1 and UART2)
• ADC: 8-channel, 10-bit (optional)
• PWM: 4 channels
• Interrupts: 15 sources
• Power Modes: Idle and Power-down
• Package: LQFP-44, PDIP-40

Descriptions:

The STC90C58AD is an enhanced 8051-based microcontroller with high-speed processing, low power consumption, and integrated peripherals. It supports In-System Programming (ISP) and In-Application Programming (IAP), making firmware updates convenient.

Features:

• High-Speed 8051 Core: Executes instructions faster than traditional 8051 MCUs.
• Dual UART: Supports serial communication for multiple interfaces.
• Watchdog Timer (WDT): Enhances system reliability.
• Low Power Modes: Reduces power consumption in idle and power-down modes.
• PWM Output: Suitable for motor control and LED dimming.
• ADC (Optional): Supports analog signal measurement.
• Wide Voltage Range: Operates from 3.3V to 5.5V.
• Strong Anti-Interference: Designed for industrial applications.

This microcontroller is commonly used in industrial control, consumer electronics, and embedded systems.