Datasheet

 2018 Microchip Technology Inc. Data Sheet Complete DS40002070A-page 2
ATmega164A/PA/324A/PA/644A/PA/1284/P
 Peripheral Features
 Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes
 One/two 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
 44-pad DRQFN
 49-ball VFBGA
 Operating Voltages
 1.8 - 5.5V
 Speed Grades
 0 - 4MHz @ 1.8 - 5.5V
 0 - 10MHz @ 2.7 - 5.5V
 0 - 20MHz @ 4.5 - 5.5V
 Power Consumption at 1MHz, 1.8V, 25C
 Active: 0.4mA
 Power-down Mode: 0.1µA
 Power-save Mode: 0.6µA (Including 32kHz RTC)
Note: 1. See “Data retention” on page 17 for details.