Features: • High-performance, Low-power AVR® 8-bit Microcontroller
• Advanced RISC Architecture
90 Powerful Instructions Most Single Clock Cycle Execution
32 x 8 General Purpose Working Registers
Fully Static Operation
• Nonvolatile Program and Data Memories
1K Byte In-System Programmable Flash Program Memory Endurance: 1,000 Write/Erase Cycles
64 Bytes EEPROM Endurance: 100,000 Write/Erase Cycles
Programming Lock for Flash Program Data Security
• Peripheral Features
Interrupt and Wake-up on Pin Change
Two 8-bit Timer/Counters with Separate Prescalers
One 150 kHz, 8-bit High-speed PWM Output
4-channel 10-bit ADC One Differential Voltage Input with Optional Gain of 20x
On-chip Analog Comparator
Programmable Watchdog Timer with On-chip Oscillator
• Special Microcontroller Features
In-System Programmable via SPI Port
Enhanced Power-on Reset Circuit
Programmable Brown-out Detection Circuit
Internal, Calibrated 1.6 MHz Tunable Oscillator
Internal 25.6 MHz Clock Generator for Timer/Counter
External and Internal Interrupt Sources
Low-power Idle and Power-down Modes
• Power Consumption at 1.6 MHz, 3V, 25°C
Active: 3.0 mA
Idle Mode: 1.0 mA
Power-down: < 1 µA
• I/O and Packages
8-lead PDIP and 8-lead SOIC: 6 Programmable I/O Lines
• Operating Voltages
2.7V - 5.5V
• Internal 1.6 MHz System ClockPinout
DescriptionThe ATtiny15L is a low-power CMOS 8-bit microcontroller based on the AVR RISC architecture. By executing powerful instructions in a single clock cycle, the ATtiny15L achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.
The ATtiny15L AVR core combines a rich instruction set with 32 general purpose working registers. All the 32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers to be accessed in one single instruction executed in one clock cycle. The resulting architecture is more code efficient while achieving throughputs up to ten times faster than conventional CISC microcontrollers.
The ATtiny15L provides 1K byte of Flash, 64 bytes EEPROM, six general purpose I/O lines, 32 general purpose working registers, two 8-bit Timer/Counters, one with high- speed PWM output, internal oscillators, internal and external interrupts, programmable Watchdog Timer, 4-channel 10-bit Analog-to-Digital Converter with one differential volt- age input with optional 20x gain, and three software-selectable Power-saving modes. The Idle mode stops the CPU while allowing the ADC, analog comparator, Timer/Counters and interrupt system to continue functioning. The ADC Noise Reduction mode facilitates high-accuracy ADC measurements by stopping the CPU while allowing the ADC to continue functioning. The Power-down mode saves the register contents but freezes the oscillators, disabling all other chip functions until the next interrupt or hard-ware reset. The wake-up or interrupt on pin change features enable the ATtiny15L to be highly responsive to external events, still featuring the lowest power consumption while in the Power-saving modes.
The device is manufactured using Atmel's high-density, nonvolatile memory technology. By combining a RISC 8-bit CPU with Flash on a monolithic chip, the ATtiny15L is a pow- erful microcontroller that provides a highly flexible and cost-efficient solution to many embedded control applications. The peripheral features make the ATtiny15L particularly suited for battery chargers, lighting ballasts and all kinds of intelligent sensor applications.
The ATtiny15L AVR is supported with a full suite of program and system development tools including macro assemblers, program debugger/simulators, In-circuit emulators and evaluation kits.
ATtiny15L Data Sheet
