Datasheet
Table Of Contents
- Features
- Pin Configuration
- Description
- Architectural Overview
- General-purpose Register File
- ALU – Arithmetic Logic Unit
- Flash Program Memory
- Program and Data Addressing Modes
- Subroutine and Interrupt Hardware Stack
- EEPROM Data Memory
- Memory Access and Instruction Execution Timing
- I/O Memory
- Reset and Interrupt Handling
- ATtiny12 Internal Voltage Reference
- Interrupt Handling
- Sleep Modes for the ATtiny11
- Sleep Modes for the ATtiny12
- ATtiny12 Calibrated Internal RC Oscillator
- Timer/Counter0
- Watchdog Timer
- ATtiny12 EEPROM Read/Write Access
- Analog Comparator
- I/O Port B
- Memory Programming
- Program (and Data) Memory Lock Bits
- Fuse Bits in ATtiny11
- Fuse Bits in ATtiny12
- Signature Bytes
- Calibration Byte in ATtiny12
- Programming the Flash and EEPROM
- High-voltage Serial Programming
- High-voltage Serial Programming Algorithm
- High-voltage Serial Programming Characteristics
- Low-voltage Serial Downloading (ATtiny12 only)
- Low-voltage Serial Programming Characteristics
- Electrical Characteristics
- Register Summary ATtiny11
- Register Summary ATtiny12
- Instruction Set Summary
- Ordering Information
- Packaging Information
- Data Sheet Change Log for ATtiny11/12
- Table of Contents

85
ATtiny11/12
1006D–AVR–07/03
Note: The speed grade refers to maximum clock rate when using an external crystal or external clock drive. The internal RC oscillator
has the same nominal clock frequency for all speed grades.
Ordering Information
Power Supply Speed (MHz) Ordering Code Package Operation Range
2.7 - 5.5V 2 ATtiny11L-2PC
ATtiny11L-2SC
8P3
8S2
Commercial
(0°C to 70°C)
ATtiny11L-2PI
ATtiny11L-2SI
8P3
8S2
Industrial
(-40°C to 85°C)
4.0 - 5.5V 6 ATtiny11-6PC
AT ti ny1 1- 6S C
8P3
8S2
Commercial
(0°C to 70°C)
AT ti ny1 1- 6P I
AT ti ny1 1- 6S I
8P3
8S2
Industrial
(-40°C to 85°C)
1.8 - 5.5V 1.2 ATtiny12V-1PC
ATtiny12V-1SC
8P3
8S2
Commercial
(0°C to 70°C)
ATtiny12V-1PI
ATtiny12V-1SI
8P3
8S2
Industrial
(-40°C to 85°C)
2.7 - 5.5V 4 ATtiny12L-4PC
ATtiny12L-4SC
8P3
8S2
Commercial
(0°C to 70°C)
ATtiny12L-4PI
ATtiny12L-4SI
8P3
8S2
Industrial
(-40°C to 85°C)
4.0 - 5.5V 8 ATtiny12-8PC
AT ti ny1 2- 8S C
8P3
8S2
Commercial
(0°C to 70°C)
AT ti ny1 2- 8P I
AT ti ny1 2- 8S I
8P3
8S2
Industrial
(-40°C to 85°C)
Package Type
8P3 8-lead, 0.300" Wide, Plastic Dual Inline Package (PDIP)
8S2 8-lead, 0.200" Wide, Plastic Gull-Wing Small Outline (EIAJ SOIC)