Microchip Technology AT89LP51 & AT89LP52 8-Bit Microcontrollers
Microchip Technology AT89LP51 and AT89LP52 8-Bit Microcontrollers are low-power, high-performance CMOS MCUs with 4K/8K bytes of In-System Programmable Flash program memory and 256 bytes of Flash data memory. These devices also offer 256 bytes of RAM, up to 36 I/O lines, three 16-bit timer/counters, a programmable watchdog timer, a full-duplex serial port, an on-chip crystal oscillator, an internal 1.8432 MHz auxiliary oscillator, and a four-level, six-vector interrupt system.
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 20MHz Clock Frequency
- Fully Static Operation: 0Hz to 20MHz
- On-chip 2-cycle Hardware Multiplier
- 256 x 8 Internal RAM
- External Data/Program Memory Interface
- Dual Data Pointers
- 4-level Interrupt Priority
- Nonvolatile Program and Data Memory
- 8K Bytes of In-System Programmable (ISP) Flash Program Memory
- 256 Bytes of Flash Data Memory
- 256-byte User Signature Array
- Endurance: 10,000 Write/Erase Cycles
- Serial Interface for Program Downloading
- 64-byte Fast Page Programming Mode
- 3-level Program Memory Lock for Software Security
- In-Application Programming of Program Memory
- Peripheral Features
- Three 16-bit Timer/Counters with Clock Out Modes
- Enhanced UART
- Automatic Address Recognition
- Framing Error Detection
- SPI and TWI Emulation Modes
- Programmable Watchdog Timer with Software Reset and Prescaler
- Special Microcontroller Features
- 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
- Internal 1.8432 MHz Auxiliary Oscillator
- I/O and Packages
- Up to 36 Programmable I/O Lines
- Green (Pb/Halide-free) Packages
- 40-lead PDIP
- 44-lead TQFP/PLCC
- 44-pad VQFN/MLF
- Configurable Port Modes (per 8-bit port)
- Quasi-bidirectional (80C51 Style)
- Input-only (Tristate)
- Push-pull CMOS Output
- Open-drain
- Operating Conditions
- 2.4V to 5.5V VCC Voltage Range
- -40°C to 85°C Temperature Range
- 0 to 20 MHz @ 2.4V-5.5V
- 0 to 25 MHz @ 4.5V-5.5V
Applications
- Battery management
- White goods
- Universal remote control
- Power management
- Industrial and motor control
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