1.Features

High-performance, Low-power AVR ® 8-bit Microcontroller
•RISC Architecture
– 118 Powerful Instructions
– Most Single Clock Cycle Execution
– 32 x 8 General Purpose Working Registers
– Fully Static Operation
– Up to 16 MIPS Throughput at 16 MHz
•Data and Non-volatile Program Memory
– 2K Bytes of In-System Programmable Program Memory Flash Endurance: 10,000 Write/Erase Cycles
– 128 Bytes of In-System Programmable EEPROMEndurance: 100,000 Write/Erase Cycles
– 128 Bytes Internal SRAM– Programming Lock for Flash Program and EEPROM Data Security
•Peripheral Features
– 8-bit Timer/Counter with Separate Prescaler
– 8-bit High-speed Timer with Separate Prescaler2 High Frequency PWM Outputs with Separate Output Compare RegistersNon-overlapping Inverted PWM Output Pins
– Universal Serial Interface with Start Condition Detector
– 10-bit ADC 11 Single Ended Channels8 Differential ADC Channels7 Differential ADC Channel Pairs with Programmable Gain (1x, 20x)
– On-chip Analog Comparato
–External Interrupt
– Pin Change Interrupt on 11 Pins
– Programmable Watchdog Timer with Separate On-chip Oscillator

Special Microcontroller Features
– Low Power Idle, Noise Reduction, and Power-down Modes
– Power-on Reset and Programmable Brown-out Detection
– External and Internal Interrupt Sources
– In-System Programmable via SPI Port
– Internal Calibrated RC Oscillator
•I/O and Packages
– 20-lead PDIP/SOIC: 16 Programmable I/O Lines
– 32-lead MLF: 16 programmable I/O Lines
•Operating Voltages
– 2.7V - 5.5V for ATtiny26L
– 4.5V - 5.5V for ATtiny26
•Speed Grades
– 0 - 8 MHz for ATtiny26L
– 0 - 16 MHz for ATtiny26
•Power Consumption at 1 MHz, 3V and 25°C for ATtiny26L
– Active 16 MHz, 5V and 25°C: Typ 15 mA
– Active 1 MHz, 3V and 25°C: 0.70 mA
– Idle Mode 1 MHz, 3V and 25°C: 0.18 mA
– Power-down Mode: < 1 μA

2. Description

The ATtiny26(L) is a low-power CMOS 8-bit microcontroller based on the AVRenhanced RISC architecture. By executing powerful instructions in a single clock cycle,the ATtiny26(L) achieves throughputs approaching 1 MIPS per MHz allowing the systemdesigner to optimize power consumption versus processing speed.
The 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), allowingtwo independent registers to be accessed in one single instruction executed in one clockcycle. The resulting architecture is more code efficient while achieving throughputs up toten times faster than conventional CISC microcontrollers. The ATtiny26(L) has a highprecision ADC with up to 11 single ended channels and 8 differential channels. Sevendifferential channels have an optional gain of 20x. Four out of the seven differentialchannels, which have the optional gain, can be used at the same time. The ATtiny26(L)also has a high frequency 8-bit PWM module with two independent outputs. Two of thePWM outputs have inverted non-overlapping output pins ideal for synchronous rectifica-tion. The Universal Serial Interface of the ATtiny26(L) allows efficient softwareimplementation of TWI (Two-wire Serial Interface) or SM-bus interface. These featuresallow for highly integrated battery charger and lighting ballast applications, low-end ther-mostats, and firedetectors, among other applications.
The ATtiny26(L) provides 2K bytes of Flash, 128 bytes EEPROM, 128 bytes SRAM, upto 16 general purpose I/O lines, 32 general purpose working registers, two 8-bitTimer/Counters, one with PWM outputs, internal and external Oscillators, internal andexternal interrupts, programmable Watchdog Timer, 11-channel, 10-bit Analog to DigitalConverter with two differential voltage input gain stages, and four software selectablepower saving modes.
The Idle mode stops the CPU while allowing the Timer/Countersand interrupt system to continue functioning. The ATtiny26(L) also has a dedicated ADCNoise Reduction mode for reducing the noise in ADC conversion. In this sleep mode,only the ADC is functioning. The Power-down mode saves the register contents butfreezes the oscillators, disabling all other chip functions until the next interrupt or hard-ware reset. The Standby mode is the same as the Power-down mode, but externaloscillators are enabled. The wakeup or interrupt on pin change features enable theATtiny26(L) to be highly responsive to external events, still featuring the lowest powerconsumption while in the Power-down mode.The device is manufactured using Atmel’s high density non-volatile memory technology.By combining an enhanced RISC 8-bit CPU with Flash on a monolithic chip, theATtiny26(L) is a powerful microcontroller that provides a highly flexible and cost effec-tive solution to many embedded control applications.
The ATtiny26(L) AVR is supported with a full suite of program and system developmenttools including: Macro assemblers, program debugger/simulators, In-circuit emulators,and evaluation kits

3.Pin Configuration

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