方案设计图：

方案关键器件表：

　　Features

　　• High-performance, Low-power AVR® 8-bit Microcontroller

　　• Advanced RISC Architecture

　　– 130 Powerful Instructions – Most Single Clock Cycle Execution

　　– 32 x 8 General Purpose Working Registers + Peripheral Control Registers

　　– Fully Static Operation

　　– Up to 16 MIPS Throughput at 16 MHz

　　– On-chip 2-cycle Multiplier

　　• High Endurance Non-volatile Memory segments

　　– 64K Bytes of In-System Reprogrammable Flash program memory

　　– 2K Bytes EEPROM

　　– 4K Bytes Internal SRAM

　　– Write/Erase Cycles: 10,000 Flash/100,000 EEPROM

　　– Data retention: 20 years at 85°C/100 years at 25°C(1)

　　– Optional Boot Code Section with Independent Lock Bits

　　• In-System Programming by On-chip Boot Program

　　• True Read-While-Write Operation

　　– Up to 64K Bytes Optional External Memory Space

　　– Programming Lock for Software Security

　　– SPI Interface for In-System Programming

　　• JTAG (IEEE std. 1149.1 Compliant) Interface

　　– Boundary-scan Capabilities According to the JTAG Standard

　　– Extensive On-chip Debug Support

　　– Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface

　　• Peripheral Features

　　– Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes

　　– Two Expanded 16-bit Timer/Counters with Separate Prescaler, Compare Mode, and

　　Capture Mode

　　– Real Time Counter with Separate Oscillator

　　– Two 8-bit PWM Channels

　　– 6 PWM Channels with Programmable Resolution from 1 to 16 Bits

　　– 8-channel, 10-bit ADC

　　• 8 Single-ended Channels

　　• 7 Differential Channels

　　• 2 Differential Channels with Programmable Gain (1x, 10x, 200x)

　　– Byte-oriented Two-wire Serial Interface

　　– Dual Programmable Serial USARTs

　　– Master/Slave SPI Serial Interface

　　– Programmable Watchdog Timer with On-chip Oscillator

　　– On-chip Analog Comparator

　　• Special Microcontroller Features

　　– Power-on Reset and Programmable Brown-out Detection

　　– Internal Calibrated RC Oscillator

　　– External and Internal Interrupt Sources

　　– Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby

　　and Extended Standby

　　– Software Selectable Clock Frequency

　　– ATmega103 Compatibility Mode Selected by a Fuse

　　– Global Pull-up Disable

　　• I/O and Packages

　　– 53 Programmable I/O Lines

　　– 64-lead TQFP and 64-pad QFN/MLF

　　• Operating Voltages

　　– 2.7 - 5.5V for ATmega64A

　　• Speed Grades

　　– 0 - 16 MHz for ATmega64A

　　8-bit

　　Microcontroller

　　with 64K Bytes

　　In-System

　　Programmable

　　Flash

　　ATmega64A

　　8160C–AVR–07/