Description
●The ATtiny28 is a low-power CMOS 8-bit microcontroller based on the AVR RISC architecture. By executing powerful instructions in a single clock cycle, the ATtiny28 achieves throughputs approaching 1 MIPS per MHz, allowing the system designer to optimize power consumption versus processing speed. The AVR core combines a rich instruction set with 32 general-purpose working registers.
●Features
●• Utilizes the AVR® RISC Architecture
●• AVR – High-performance and Low-power RISC Architecture
●– 90 Powerful Instructions – Most Single Clock Cycle Execution
●– 32 x 8 General-purpose Working Registers
●– Up to 4 MIPS Throughput at 4 MHz
●• Nonvolatile Program Memory
●– 2K Bytes of Flash Program Memory
●– Endurance: 1,000 Write/Erase Cycles
●– Programming Lock for Flash Program Data Security
●• Peripheral Features
●– Interrupt and Wake-up on Low-level Input
●– One 8-bit Timer/Counter with Separate Prescaler
●– On-chip Analog Comparator
●– Programmable Watchdog Timer with On-chip Oscillator
●– Built-in High-current LED Driver with Programmable Modulation
●• Special Microcontroller Features
●– Low-power Idle and Power-down Modes
●– External and Internal Interrupt Sources
●– Power-on Reset Circuit with Programmable Start-up Time
●– Internal Calibrated RC Oscillator
●• Power Consumption at 1 MHz, 2V, 25°C
●– Active: 3.0 mA
●– Idle Mode: 1.2 mA
●– Power-down Mode: <1 µA
●• I/O and Packages
●– 11 Programmable I/O Lines, 8 Input Lines and a High-current LED Driver
●– 28-lead PDIP, 32-lead TQFP, and 32-pad MLF
●• Operating Voltages
●– VCC: 1.8V - 5.5V for the ATtiny28V
●– VCC: 2.7V - 5.5V for the ATtiny28L
●• Speed Grades
●– 0 - 1.2 MHz for the ATtiny28V
●– 0 - 4 MHz For the ATtiny28L
