ATMEL AVR Microcontroller ATmega324PA Data Sheet
Summary
Master this feature-rich, low-power AVR 8-bit Microcontroller (ATmega164PA/324PA) datasheet. This comprehensive documentation serves embedded system designers requiring dependable performance for diverse projects. It details the advanced RISC architecture, full peripheral capabilities—including ADC, multiple USARTs, and SPI—and provides detailed specifications on critical items such as pin configurations across various packages (e.g., TQFP, VQFN), memory retention, power consumption, and operating voltages.
Page 1 Text Content
BDTIC www.bdtic.com/ATMEL
Features High-performance, Low-power AVR® 8-bit Microcontroller Advanced RISC Architecture 131 Powerful Instructions – Most Single-clock Cycle Execution 32 x 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 16/32K Bytes of In-System Self-programmable Flash program memory 512B/1K Bytes EEPROM
8-bit
1/2K Bytes Internal SRAM Write/Erase Cycles: 10,000 Flash/ 100,000 EEPROM
Microcontroller
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 with 16/32K
True Read-While-Write Operation Programming Lock for Software Security Bytes In-System JTAG (IEEE std. 1149.1 Compliant) Interface Boundary-scan Capabilities According to the JTAG Standard
Programmable
Extensive On-chip Debug Support Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface
Flash
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 ATmega164PA
8-channel, 10-bit ADC
Differential mode with selectable gain at 1x, 10x or 200x ATmega324PA
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 - 20MHz @ 1.8 - 5.5V Power Consumption at 1 MHz, 1.8V, 25°C Active: 0.4 m A Power-down Mode: 0.1µA Power-save Mode: 0.6µA (Including 32 k Hz RTC)
Note: 1. See ”Data Retention” on page 9 for details.
8152BS–AVR–02/09
Page Summary Contents For ATMEL AVR Microcontroller ATmega324PA Data Sheet
Manual Details
| Brand | Atmel |
|---|---|
| Pages | 25 |
| File Size | 643.20 KB |
| Published | May 15, 2026 |
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Frequently Asked Questions
Which methods can be used to enhance code security on the microcontroller?
Security features include optional Boot Code Sections with Independent Lock Bits and True Read-While-Write operation.
What communication interfaces are supported by this chip range?
It supports Two-wire Serial, Programmable USARTs, and Master/Slave SPI Serial Interface.
How many general purpose digital I/O lines does the device offer?
The microcontroller is equipped with 32 programmable I/O Lines.
What low power states are available for operation?
There are six sleep modes, including Idle, Power-save, Power-down, Standby, and Extended Standby.