Description

The AT89LP2052/LP4052 is a low-power, high-performance CMOS 8-bit microcontroller with 2/4K bytes of In-System Programmable Flash memory. The device is manufactured using Atmels high-density nonvolatile memory technology and is compatible with the industry-standard MCS-51 instruction set. The AT89LP2052/LP4052 is built around an enhanced CPU core that can fetch a single byte from memory every clock cycle. In the classic 8051 architecture, each fetch required 6 clock cycles, forcing instructions to execute in 12, 24 or 48 clock cycles.

Features

• Compatible with MCS®51 Products

• 20 MIPS Throughput at 20 MHz Clock Frequency and 2.4V, 85°C Operating Conditions

• Single Clock Cycle per Byte Fetch

• 2/4K Bytes of In-System Programmable (ISP) Flash Memory

– Serial Interface for Program Downloading

– 32-byte Fast Page Programming Mode

– 32-byte User Signature Array

• 2.4V to 5.5V VCC Operating Range

• Fully Static Operation: 0 Hz to 20 MHz

• 2-level Program Memory Lock

• 256 x 8 Internal RAM

• Hardware Multiplier

• 15 Programmable I/O Lines

• Configurable I/O with Quasi-bidirectional, Input, Push-pull Output, and

Open-drain Modes

• Enhanced UART with Automatic Address Recognition and Framing Error Detection

• Enhanced SPI with Double-buffered Send/Receive

• Programmable Watchdog Timer with Software Reset

• 4-level Interrupt Priority

• Analog Comparator with Selectable Interrupt and Debouncing

• Two 16-bit Enhanced Timer/Counters with 8-bit PWM

• Brown-out Detector and Power-off Flag

• Internal Power-on Reset

• Low Power Idle and Power-down Modes

• Interrupt Recovery from Power-down Mode