AT89LP51RD2-20JU

A low-power, high-performance CMOS 8-bit 8051 microcontroller with 64KB of In-System Programmable Flash program memory. The AT89LP51ED2 and AT89LP51ID2 provide an additional 4KB of EEPROM for nonvolatile data storage. The devices are compatible with the industry-standard 80C51 instruction set. It is built around an enhanced CPU core that can fetch a single byte from memory every clock cycle, providing six to twelve times more throughput than the standard 8051. It also includes a compatibility mode for true timing compatibility with the Atmel AT89C51RD2/ED2. It retains all of the standard features of the AT89C51RD2/ED2 and provides a Two-Wire Interface (TWI), a 10-bit, 8-channel Analog-to-Digital Converter (ADC), two analog comparators, an 8MHz internal oscillator, and more on-chip data memory.

Applications

• Alarms
• Motor control
• Wired telephony
• Smart card readers

Key features

• 8-bit Microcontroller Compatible with 8051 Products
• Enhanced 8051 Architecture
• Single Clock Cycle per Byte Fetch
• 12 Clock per Machine Cycle Compatibility Mode
• Up to 20 MIPS Throughput at 20 MHz Clock Frequency
• Fully Static Operation: 0 Hz to 20 MHz
• On-chip 2-cycle Hardware Multiplier
• 16x16 Multiply–Accumulate Unit
• 256 x 8 Internal RAM
• On-chip 2KB Expanded RAM (ERAM)
• Software Selectable Size (0, 256, 512, 768, 1024, 1792, 2048 Bytes)
• Dual Data Pointers
• 4-level Interrupt Priority
• Nonvolatile Program and Data Memory
• 64KB of In-System Programmable (ISP) Flash Program Memory
• 4KB of EEPROM (AT89LP51ED2/ID2 Only)
• 512-byte User Signature Array
• Endurance: 10,000 Write/Erase Cycles
• Serial Interface for Program Downloading
• 2KB Boot ROM Contains Low Level Flash Programming Routines and a Default Serial Bootloader
• Peripheral Features
• Three 16-bit Enhanced Timer/Counters
• Seven 8-bit PWM Outputs
• 16-bit Programmable Counter Array
• High Speed Output, Compare/Capture
• Pulse Width Modulation, Watchdog Timer Capabilities
• Enhanced UART with Automatic Address Recognition and Framing Error Detection
• Enhanced Master/Slave SPI with Double-buffered Send/Receive
• Two Wire Interface 400K bit/s
• Programmable Watchdog Timer with Software Reset
• 8 General-purpose Interrupt and Keyboard Interface Pins
• Special Microcontroller Features
• Dual Oscillator Support: Crystal, 32 kHz Crystal, 8 MHz Internal (AT89LP51ID2)
• Two-wire On-Chip Debug Interface
• Brown-out Detection and Power-on Reset with Power-off Flag
• Selectable Polarity External Reset Pin
• Low Power Idle and Power-down Modes
• Interrupt Recovery from Power-down Mode
• 8-bit Clock Prescaler
• I/O and Packages
• Up to 40 Programmable I/O Lines
• Green (Pb/Halide-free) PLCC44, VQFP44, QFN44, PDIP40
• Configurable I/O Modes
• Quasi-bidirectional (80C51 Style), Input-only (Tristate)
• Push-pull CMOS Output, Open-drain
• Operating Conditions
• 2.4V to 5.5V Voltage Range
• -40℃ to 85℃ Temperature Range
• 0 to 20 MHz @ 2.4V–5.5V (Single-cycle)