ATMEGA324PB-AN Microchip 8bit MCU

ATMEGA324PB-AN Overview

The high-performance Microchip picoPower 8-bit AVR RISC-basedmicrocontroller combines 32kB ISP flash memory with read-while-writecapabilities, 1kB EEPROM, 2kB SRAM, 39 general purpose I/O lines, 32general purpose working registers, five flexible timer/counters withcompare modes, internal and external interrupts, three USARTs withwake-up on start of transmission, two byte-oriented 2-wire serialinterface, two SPI serial ports, one 8-channel 10-bit ADC with optionaldifferential input stage with programmable gain, programmable watchdogtimer with internal oscillator, a JTAG (IEEE 1149.1 compliant) testinterface for on-chip debugging and programming, and six softwareselectable power saving modes. The device operates between 1.8-5.5volts.

The ATmega324PB features the successful QTouch PeripheralTouch Controller (PTC). The PTC acquires signals in order to detecttouch on capacitive sensors, and supports both self- andmutual-capacitance sensors. The ATmega324PB PTC is supported by theMicrochip QTouch Composer development tool (QTouch Library projectbuilder and QTouch Analyzer). It provides a faster and less complexcapacitive touch implementation in any application.

It supports 32buttons in self-capacitance mode, or up to 256 buttons inmutual-capacitance mode. Mix-and-match mutual-and self-capacitancesensors is possible, and only one pin is required per electrode ??? noexternal components are required, giving savings on the BOM costcompared to competing solutions.

By executing powerfulinstructions in a single clock cycle, the device achieves throughputsapproaching 1 MIPS per MHz, balancing power consumption and processingspeed.

ECAD Model

Footprint

Features

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 20MHz
- On-Chip 2-Cycle Multiplier
High Endurance Non-Volatile Memory Segments
- 32KBytes of In-System Self-Programmable Flash program memory
- 1KBytes EEPROM
- 2KBytes Internal SRAM
- Write/Erase Cycles: 10,000 Flash/100,000 EEPROM
- Data retention: 20 years at 85°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
Peripheral Features
- Peripheral Touch Controller (PTC)
  - Capacitive Touch Buttons, Sliders and Wheels
  - 24 Self-Cap Channels and 144 Mutual Cap Channels
- Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode
- Three 16-bit Timer/Counters with Separate Prescaler, Compare Mode, and Capture Mode
- Real Time Counter with Separate Oscillator
- Ten PWM Channels
- 8-channel 10-bit ADC in TQFP and QFN/MLF package
- ThreeProgrammable Serial USARTs
- Two Master/Slave SPI Serial Interfaces
- Two Byte-Oriented 2-Wire Serial Interfaces (Philips I2C Compatible)
- 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 8 MHz Calibrated Oscillator
- External and Internal Interrupt Sources
- Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby, and Extended Standby
- Clock Failure Detection Mechanism and Switch to Internal 8 MHz RC Oscillator in case of Failure
- Individual Serial Number to Represent a Unique ID
I/O and Packages
- 27 Programmable I/O Lines
- 32-pin TQFP and 32-pin QFN/MLF
Operating Voltage:
- 1.8 - 5.5V
Temperature Range:
- -40°C to 105°C
Speed Grade:
- 0 - 4MHz @ 1.8 - 5.5V
- 0 - 10MHz @ 2.7 - 5.5.V
- 0 - 20MHz @ 4.5 - 5.5V
Power Consumption at 1MHz, 1.8V, 25°C
- Active Mode: 0.24mA
- Power-Down Mode: 0.2μA
- Power-Save Mode: 1.3μA (Including 32kHz RTC)