AT89S4051 - ATMEL Corporation

AT89S4051 8-bit Microcontroller

The AT89S2051/S4051 is a low-voltage, high-performance CMOS 8-bit microcontroller with 2K/4K bytes of In-System Programmable (ISP) Flash program memory. The device is manufactured using Atmel’s high-density nonvolatile memory technology and is compatible with the industry-standard MCS-51 instruction set. By combining a versatile 8-bit CPU with Flash on a mon.

Features

• Compatible with MCS®51 Products
• 2K/4K Bytes of In-System Programmable (ISP) Flash Program Memory
  – Serial Interface for Program Downloading
  – Endurance: 10,000 Write/Erase Cycles
• 2.7V to 5.5V Operating Range
• Fully Static Operation: 0 Hz to 24 MHz (x1 and x2 Modes)
• Two-level Program Memory Lock
• 256 x 8-bit Internal RAM
• 15 Programmable I/O Lines
• Two 16-bit Timer/Counters
• Six Interrupt Sources
• Programmable Serial UART Channel
• Direct LED Drive Outputs
• On-chip Analog Comparator with Selectable Interrupt
• 8-bit PWM (Pulse-width Modulation)
• Low Power Idle and Power-down Mod.