STC15W204S-35I-SOP8

Key Features

Core: Enhanced 8051 compatible (single-cycle instruction execution)

Architecture: 8-bit MCU

Operating Voltage: 3.3 V – 5.5 V

Operating Frequency: Up to 35 MHz

Program Memory (Flash): 2 KB

Data Memory (RAM): 128 bytes

EEPROM / Data Flash: None (program memory rewritable)

I/O Pins: 6 GPIOs (shared multifunction)

Timers: 2 × 16-bit timers/counters

UART: 1 × full-duplex serial port

PWM: 2 channels

ADC: 8-bit, 4-channel analog-to-digital converter

Watchdog Timer: Integrated

Reset: Power-on reset and external reset supported

ISP (In-System Programming): Supported via UART (no external programmer required)

Interrupt Sources: 6 interrupt vectors, 4 priority levels

Clock Source: Internal RC oscillator or external crystal

Package Type: SOP-8 (Small Outline Package, 8 pins)

Package Dimensions: 4.9 mm × 3.9 mm × 1.5 mm

Mounting: Surface Mount (SMD)

Temperature Range: –40 °C to +85 °C

RoHS / REACH: Compliant and lead-free

Performance Highlights

Fully compatible with MCS-51 instruction set

Up to 8× faster than standard 8051 MCUs (single-cycle core)

In-system programmable (ISP) via serial port

Low power standby and power-down modes

Compact 8-pin design ideal for minimal I/O systems

High-speed operation at up to 35 MHz

Applications

Consumer electronics control

Power management and battery chargers

Small appliances and sensor modules

LED lighting control systems

Motor control or fan regulation

Communication interfaces and converters

General embedded control in compact systems