8-bit AVR Microcontrollers
ATmega48A/88A/168A
DATASHEET COMPLETE
Introduction
The Atmel ATmega48A/88A/168A 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 ATmega48A/88A/
168A achieves throughputs close to 1MIPS per MHz. This empowers system
designer to optimize the device for power consumption versus processing
speed.
Feature
High Performance, Low Power Atmel AVR 8-Bit Microcontroller Family
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
4K/8K/16KBytes of In-System Self-Programmable Flash program
Memory
256/512/512Bytes EEPROM
512/1K/1KBytes Internal SRAM
Write/Erase Cycles: 10,000 Flash/100,000 EEPROM
(1)
Data Retention: 20 years at 85C/100 years at 25C
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
Atmel QTouch Library Support
Capacitive Touch Buttons, Sliders and Wheels
QTouch and QMatrix Acquisition
Up to 64 sense channels
Atmel-42733B-ATmega48A/88A/168A_Datasheet_Complete-11/2016 Peripheral Features
Two 8-bit Timer/Counters with Separate Prescaler and Compare Mode
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 in TQFP and QFN/MLF package
Temperature Measurement
6-channel 10-bit ADC in PDIP Package
Temperature Measurement
Two Master/Slave SPI Serial Interface
One Programmable Serial USART
2
One Byte-oriented 2-wire Serial Interface (Philips I C compatible)
Programmable Watchdog Timer with Separate On-chip Oscillator
One On-chip Analog Comparator
Interrupt and Wake-up on Pin Change
Special Microcontroller Features
Power-on Reset and Programmable Brown-out Detection
Internal Calibrated 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
23 Programmable I/O Lines
28-pin PDIP, 32-lead TQFP, 28-pad QFN/MLF and 32-pad QFN/MLF
Operating Voltage:
1.8 - 5.5V
Temperature Range:
-40C to 85C
Speed Grade:
0 - 4MHz @ 1.8 - 5.5V
0 - 10MHz @ 2.7 - 5.5V
0 - 20MHz @ 4.5 - 5.5V
Power Consumption at 1MHz, 1.8V, 25C
Active Mode: 0.2mA
Power-down Mode: 0.1A
Power-save Mode: 0.75A (Including 32kHz RTC)
Atmel ATmega48A/88A/168A [DATASHEET] 2
Atmel-42733B-ATmega48A/88A/168A_Datasheet_Complete-11/2016