AT89LP428_14 Datasheet, PDF (1/149 Pages) ATMEL Corporation – 8-bit Microcontroller Compatible with MCS51 Products

Features
• 8-bit Microcontroller Compatible with MCS^®51 Products
• Enhanced 8051 Architecture
– Single-clock Cycle per Byte Fetch
– Up to 20 MIPS Throughput at 20 MHz Clock Frequency
– Fully Static Operation: 0 Hz to 20 MHz
– On-chip 2-cycle Hardware Multiplier
– 256 x 8 Internal RAM
– 512 x 8 Internal Extra RAM
– Dual Data Pointers
– 4-level Interrupt Priority
• Nonvolatile Program and Data Memory
– 4K/8K Bytes of In-System Programmable (ISP) Flash Program Memory
– 512/1024 Bytes of Flash Data Memory
– Endurance: Minimum 100,000 Write/Erase Cycles (for Both
Program/Data Memories)
– Serial Interface for Program Downloading
– 64-byte Fast Page Programming Mode
– 128-byte User Signature Array
– 2-level Program Memory Lock for Software Security
– In-Application Programming of Program Memory
• Peripheral Features
– Three 16-bit Enhanced Timer/Counters
– Two 8-bit PWM Outputs
– 4-channel 16-bit Compare/Capture/PWM Array
– Enhanced UART with Automatic Address Recognition and Framing
Error Detection
– Enhanced Master/Slave SPI with Double-buffered Send/Receive
– Programmable Watchdog Timer with Software Reset
– Dual Analog Comparators with Selectable Interrupts and Debouncing
– 8 General-purpose Interrupt Pins
• Special Microcontroller Features
– 2-wire On-chip Debug Interface
– Brown-out Detection and Power-on Reset with Power-off Flag
– Active-low External Reset Pin
– Internal RC Oscillator
– Low Power Idle and Power-down Modes
– Interrupt Recovery from Power-down Mode
• I/O and Packages
– Up to 30 Programmable I/O Lines
– 28-lead PDIP or 32-lead TQFP/PLCC/MLF
– Configurable I/O Modes
• Quasi-bidirectional (80C51 Style)
• Input-only (Tristate)
• Push-pull CMOS Output
• Open-drain
• Operating Conditions
– 2.4V to 5.5V V_CC Voltage Range
– -40°C to 85°C Temperature Range
– 0 to 20 MHz @ 2.4–5.5V
– 0 to 25 MHz @ 4.0–5.5V
8-bit
Microcontroller
with 4K/8K
Bytes In-System
Programmable
Flash
AT89LP428
AT89LP828
3654A–MICRO–8/09