描述 Description

The AT90S1200 is a low-power CMOS 8-bit microcontroller based on the AVR RISC architecture. By executing powerful instructions in a single clock cycle, the AT90S1200 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

–89 Powerful Instructions –Most Single Clock Cycle Execution

–32 x 8 General Purpose Working Registers

–Up to 12 MIPS Throughput at 12 MHz

? Data and Non-volatile Program Memory

–1K Byte of In-System Programmable Flash Endurance: 1,000 Write/Erase Cycles

–64 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

–On-chip Analog Comparator

–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

–Selectable On-chip RC Oscillator for Zero External Components

? Specifications

–Low-power, High-speed CMOS Process Technology

–Fully Static Operation

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

–Active: 2.0 mA

–Idle Mode: 0.4 mA

–Power-down Mode: <1 μA

? I/O and Packages

–15 Programmable I/O Lines

–20-pin PDIP, SOIC and SSOP

? Operating Voltages

–2.7 - 6.0V (AT90S1200-4)

–4.0 - 6.0V (AT90S1200-12)

? Speed Grades

–0 - 4 MHz, (AT90S1200-4)

–0 - 12 MHz, (AT90S1200-12)