ATtiny406

tinyAVR

0-series

Introduction

The ATtiny406 is a member of the tinyAVR

0-series of microcontrollers, using the AVR

processor with

hardware multiplier, running at up to 20 MHz, with 4 KB Flash, 256 bytes of SRAM, and 128 bytes of

EEPROM in a 20-pin package. The tinyAVR

0-series uses the latest technologies with a flexible, low-

power architecture including Event System and SleepWalking, accurate analog features, and Core

Independent Peripherals.

Attention: Automotive products are documented in separate data sheets.

Features

• CPU:

– AVR

CPU

– Running at up to 20 MHz

– Single-cycle I/O access

– Two-level interrupt controller

– Two-cycle hardware multiplier

• Memories:

– 4 KB In-system self-programmable Flash memory

– 128B EEPROM

– 256B SRAM

– Write/erase endurance:

• Flash: 10,000 cycles

• EEPROM: 100,000 cycles

– Data retention: 40 years at 55°C

• System:

– Power-on Reset (POR)

– Brown-out Detector (BOD)

– Clock Options:

• 16/20 MHz low-power internal RC oscillator

• 32.768 kHz Ultra Low-Power (ULP) internal RC oscillator

• External clock input

�� Single-pin Unified Program and Debug Interface (UPDI)

Preliminary Datasheet

DS40001976B-page 1

– Three sleep modes:

• Idle with all peripherals running for immediate wake-up

• Standby

– Configurable operation of selected peripherals

– SleepWalking peripherals

• Power-Down with full data retention

• Peripherals:

– One 16-bit Timer/Counter Type A (TCA) with a dedicated period register and three compare

channels

– One 16-bit Timer/Counter Type B (TCB) with input capture

– One 16-bit Real-Time Counter (RTC) running from internal RC oscillator

– Watchdog Timer (WDT) with Window mode, with a separate on-chip oscillator

– One USART with fractional baud rate generator, auto-baud, and start-of-frame detection

– One master/slave Serial Peripheral Interface (SPI)

– One Two-Wire Interface (TWI) with dual address match

• Philips I

C compatible

• Standard mode (Sm, 100 kHz)

• Fast mode (Fm, 400 kHz)

• Fast mode plus (Fm+, 1 MHz)

– One Analog Comparator (AC) with a low propagation delay

– One 10-bit 115 ksps Analog-to-Digital Converter (ADC)

– Multiple voltage references (VREF):

• 0.55V

• 1.1V

• 1.5V

• 2.5V

• 4.3V

– Event System (EVSYS) for CPU independent and predictable inter-peripheral signaling

– Configurable Custom Logic (CCL) with two programmable look-up tables

– Automated CRC memory scan (CRCSCAN)

– External interrupt on all general purpose pins

• I/O and Packages:

– 18 programmable I/O lines

– 20-pin VQFN 3x3 mm and SOIC300

• Temperature Ranges:

– -40°C to 105°C

– -40°C to 125°C

• Speed Grades:

– 0-5 MHz @ 1.8V – 5.5V

– 0-10 MHz @ 2.7V – 5.5V

– 0-20 MHz @ 4.5V – 5.5V

ATtiny406

Preliminary Datasheet

DS40001976B-page 2