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The AT89LS52-16JU is a microcontroller from Atmel (now part of Microchip Technology). Below are its specifications, descriptions, and features:

Manufacturer:

• Atmel (now owned by Microchip Technology)

Specifications:

• Core: 8-bit 8051 architecture
• Flash Memory: 8KB (In-System Programmable)
• RAM: 256 bytes
• EEPROM: None
• Clock Speed: 0Hz to 16MHz (16MHz max operating frequency)
• Operating Voltage: 4.0V to 5.5V
• I/O Pins: 32 (Four 8-bit ports: P0, P1, P2, P3)
• Timers: Three 16-bit timers/counters (Timer 0, Timer 1, Timer 2)
• UART: Full-duplex serial port
• Interrupts: 8 interrupt sources (2 external, 3 timer, serial, reset)
• Watchdog Timer: Yes
• Power Saving Modes: Idle & Power-down
• Package: PLCC-44 (Plastic Leaded Chip Carrier)

Descriptions:

• The AT89LS52-16JU is a low-power, high-performance CMOS 8-bit microcontroller with 8KB Flash memory.
• It is compatible with the MCS-51 instruction set and retains all standard 8051 features.
• Supports In-System Programming (ISP) via serial interface.
• Suitable for embedded control applications, industrial automation, and consumer electronics.

Features:

• Low-power consumption (CMOS technology)
• 16MHz operation (max clock speed)
• Three-level program memory lock (security feature)
• Boolean processor for bit manipulation
• Power-down & Idle modes for energy efficiency
• Dual Data Pointer (DPTR) for faster data access
• Programmable serial UART for communication

Package:

• PLCC-44 (Plastic Leaded Chip Carrier, 44-pin)

This microcontroller is widely used in industrial and consumer applications requiring 8-bit control with moderate memory and speed.