描述 Description

Overview
The ATmega164P/324P/644P is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega164P/324P/644P achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

特性 Features

? High-performance, Low-power Atmel? AVR? 8-bit Microcontroller
? Advanced RISC Architecture
?? – 131 Powerful Instructions – Most Single-clock Cycle Execution
?? – 32 × 8 General Purpose Working Registers
?? – Fully Static Operation
?? – Up to 20 MIPS Throughput at 20 MHz
?? – On-chip 2-cycle Multiplier
? High Endurance Non-volatile Memory segments
?? – 16K/32K/64K Bytes of In-System Self-programmable Flash program memory
?? – 512B/1K/2K Bytes EEPROM
?? – 1K/2K/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

?? – Optional Boot Code Section with Independent Lock Bits
????? In-System Programming by On-chip Boot Program
????? True Read-While-Write Operation
?? – Programming Lock for Software Security
? 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
?? – One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode
?? – Real Time Counter with Separate Oscillator
?? – Six PWM Channels
?? – 8-channel, 10-bit ADC Differential mode with selectable gain at 1×, 10× or 200×
?? – Byte-oriented Two-wire Serial Interface
?? – Two Programmable Serial USART
?? – Master/Slave SPI Serial Interface
?? – Programmable Watchdog Timer with Separate On-chip Oscillator
?? – On-chip Analog Comparator
?? – Interrupt and Wake-up on Pin Change
? 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
? I/O and Packages
?? – 32 Programmable I/O Lines
?? – 40-pin PDIP, 44-lead TQFP, 44-pad VQFN/QFN/MLF (ATmega164P/324P/644P)
?? – 44-pad DRQFN (ATmega164P)
? Operating Voltages
?? – 1.8V - 5.5V for ATmega164P/324P/644PV
?? – 2.7V - 5.5V for ATmega164P/324P/644P
? Speed Grades
?? – ATmega164P/324P/644PV: 0 - 4 MHz @ 1.8V - 5.5V, 0 - 10 MHz @ 2.7V - 5.5V
?? – ATmega164P/324P/644P: 0 - 10 MHz @ 2.7V - 5.5V, 0 - 20 MHz @ 4.5V - 5.5V
? Power Consumption at 1 MHz, 1.8V, 25°C for ATmega164P/324P/644PV
?? – Active: 0.4 mA
?? – Power-down Mode: 0.1 μA
???? Power-save Mode: 0.6 μA (Including 32 kHz RTC)