描述 Description

The AT90S/LS2323 and AT90S/LS2343 are low-power, CMOS, 8-bit microcontrollers based on the AVR RISC architecture. By executing powerful instructions in a single clock cycle, the AT90S2323/2343 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

特性 Features

? Utilizes the AVR?RISC Architecture

? AVR – High-performance and Low-power RISC Architecture

– 118 Powerful Instructions – Most Single Clock Cycle Execution

– 32 x 8 General-purpose Working Registers

– Up to 10 MIPS Throughput at 10 MHz

? Data and Nonvolatile Program Memory

– 2K Bytes of In-System Programmable Flash

Endurance: 1,000 Write/Erase Cycles

– 128 Bytes Internal RAM

– 128 Bytes of In-System Programmable EEPROM

Endurance: 100,000 Write/Erase Cycles

– Programming Lock for Flash Program and EEPROM Data Security

? Peripheral Features

– One 8-bit Timer/Counter with Separate Prescaler

– Programmable Watchdog Timer with On-chip Oscillator

– SPI Serial Interface for In-System Programming

? Special Microcontroller Features

– Low-power Idle and Power-down Modes

– External and Internal Interrupt Sources

– Power-on Reset Circuit

– Selectable On-chip RC Oscillator

? Specifications

– Low-power, High-speed CMOS Process Technology

– Fully Static Operation

? Power Consumption at 4 MHz, 3V, 25°C

– Active: 2.4 mA

– Idle Mode: 0.5 mA

– Power-down Mode: <1 μA

? I/O and Packages

– Three Programmable I/O Lines for AT90S/LS2323

– Five Programmable I/O Lines for AT90S/LS2343

– 8-pin PDIP and SOIC

? Operating Voltages

– 4.0 - 6.0V for AT90S2323/AT90S2343

– 2.7 - 6.0V for AT90LS2323/AT90LS2343

? Speed Grades

– 0 - 10 MHz for AT90S2323/AT90S2343-10

– 0 - 4 MHz for AT90LS2323/AT90LS2343-4

– 0 - 1 MHz for AT90LS2343-1