ATtiny261

Manufacturer Part NumberATtiny261
ManufacturerAtmel Corporation
ATtiny261 datasheets
 


Specifications of ATtiny261

Flash (kbytes)2 KbytesPin Count20
Max. Operating Frequency20 MHzCpu8-bit AVR
# Of Touch Channels4Hardware Qtouch AcquisitionNo
Max I/o Pins16Ext Interrupts16
Usb SpeedNoUsb InterfaceNo
Spi1Twi (i2c)1
Graphic LcdNoVideo DecoderNo
Camera InterfaceNoAdc Channels11
Adc Resolution (bits)10Adc Speed (ksps)15
Analog Comparators1Resistive Touch ScreenNo
Temp. SensorYesCrypto EngineNo
Sram (kbytes)0.12Eeprom (bytes)128
Self Program MemoryYESDram MemoryNo
Nand InterfaceNoPicopowerNo
Temp. Range (deg C)-40 to 85I/o Supply Class1.8 to 5.5
Operating Voltage (vcc)1.8 to 5.5FpuNo
Mpu / Mmuno / noTimers2
Output Compare Channels6Input Capture Channels1
Pwm Channels632khz RtcNo
Calibrated Rc OscillatorYes  
1
Page 1
2
Page 2
3
Page 3
4
Page 4
5
Page 5
6
Page 6
7
Page 7
8
Page 8
9
Page 9
10
Page 10
11
12
13
14
15
16
17
18
19
20
Page 1/20

Download datasheet (552Kb)Embed
Next
Features
High Performance, Low Power AVR
Advanced RISC Architecture
– 123 Powerful Instructions – Most Single Clock Cycle Execution
– 32 x 8 General Purpose Working Registers
– Fully Static Operation
Non-volatile Program and Data Memories
– 2/4/8K Byte of In-System Programmable Program Memory Flash
• Endurance: 10,000 Write/Erase Cycles
– 128/256/512 Bytes In-System Programmable EEPROM
• Endurance: 100,000 Write/Erase Cycles
– 128/256/512 Bytes Internal SRAM
– Data retention: 20 years at 85°C / 100 years at 25°C
– Programming Lock for Self-Programming Flash Program & EEPROM Data Security
Peripheral Features
– 8/16-bit Timer/Counter with Prescaler
– 8/10-bit High Speed Timer/Counter with Separate Prescaler
• 3 High Frequency PWM Outputs with Separate Output Compare Registers
• Programmable Dead Time Generator
– 10-bit ADC
• 11 Single-Ended Channels
• 16 Differential ADC Channel Pairs
• 15 Differential ADC Channel Pairs with Programmable Gain (1x, 8x, 20x, 32x)
– On-chip Analog Comparator
– Programmable Watchdog Timer with Separate On-chip Oscillator
– Universal Serial Interface with Start Condition Detector
Special Microcontroller Features
– debugWIRE On-chip Debug System
– In-System Programmable via SPI Port
– External and Internal Interrupt Sources
– Low Power Idle, ADC Noise Reduction, Standby and Power-Down Modes
– Enhanced Power-on Reset Circuit
– Programmable Brown-out Detection Circuit
– Internal Calibrated Oscillator
– On-chip Temperature Sensor
I/O and Packages
– 16 Programmable I/O Lines
– Available in 20-pin PDIP, 20-pin SOIC and 32-pad MLF
Operating Voltage:
– 1.8 – 5.5V for ATtiny261V/461V/861V
– 2.7 – 5.5V for ATtiny261/461/861
Speed Grade:
– ATtiny261V/461V/861V: 0 – 4 MHz @ 1.8 – 5.5V, 0 – 10 MHz @ 2.7 – 5.5V
– ATtiny261/461/861: 0 – 10 MHz @ 2.7 – 5.5V, 0 – 20 MHz @ 4.5 – 5.5V
Industrial Temperature Range
Low Power Consumption
– Active Mode (1 MHz System Clock): 300 µA @ 1.8V
– Power-Down Mode: 0.1 µA at 1.8V
®
8-Bit Microcontroller
8-bit
Microcontroller
with 2/4/8K
Bytes In-System
Programmable
Flash
ATtiny261/V
ATtiny461/V
ATtiny861/V
Summary
2588ES–AVR–08/10

ATtiny261 Summary of contents

  • Page 1

    ... ATtiny261V/461V/861V – 2.7 – 5.5V for ATtiny261/461/861 • Speed Grade: – ATtiny261V/461V/861V: 0 – 4 MHz @ 1.8 – 5.5V, 0 – 10 MHz @ 2.7 – 5.5V – ATtiny261/461/861: 0 – 10 MHz @ 2.7 – 5.5V, 0 – 20 MHz @ 4.5 – 5.5V • Industrial Temperature Range • Low Power Consumption – Active Mode (1 MHz System Clock): 300 µA @ 1.8V – ...

  • Page 2

    ... Pin Configurations Figure 1-1. Pinout ATtiny261/461/861 and ATtiny261V/461V/861V (MOSI/DI/SDA/OC1A/PCINT8) PB0 (MISO/DO/OC1A/PCINT9) PB1 (SCK/USCK/SCL/OC1B/PCINT10) PB2 (ADC7/OC1D/CLKI/XTAL1/PCINT12) PB4 (ADC8/OC1D/CLKO/XTAL2/PCINT13) PB5 (ADC9/INT0/T0/PCINT14) PB6 (ADC10/RESET/PCINT15) PB7 (OC1B/PCINT11) PB3 (ADC7/OC1D/CLKI/XTAL1/PCINT12) PB4 (ADC8/OC1D/CLKO/XTAL2/PCINT13) PB5 Note: To ensure mechanical stability the center pad underneath the QFN/MLF package should be soldered to ground on the board. ...

  • Page 3

    Pin Descriptions 1.1.1 VCC Supply voltage. 1.1.2 GND Ground. 1.1.3 AVCC Analog supply voltage. This is the supply voltage pin for the Analog-to-digital Converter (ADC), the analog comparator, the Brown-Out Detector (BOD), the internal voltage reference and Port A. ...

  • Page 4

    ... Overview ATtiny261/461/861 are low-power CMOS 8-bit microcontrollers based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATtiny261/461/861 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed. 2.1 Block Diagram Figure 2-1. ...

  • Page 5

    ... On-chip ISP Flash allows the Program memory to be re-programmed In-System through an SPI serial interface conventional non-volatile memory programmer On-chip boot code running on the AVR core. The ATtiny261/461/861 AVR is supported by a full suite of program and system development tools including: C Compilers, Macro Assemblers, Program Debugger/Simulators, and Evaluation kits. ...

  • Page 6

    ... Reliability Qualification results show that the projected data retention failure rate is much less than 1 PPM over 20 years at 85°C or 100 years at 25°C. 3.4 Disclaimer Typical values contained in this data sheet are based on simulations and characterization of other AVR microcontrollers manufactured on the same process technology. ATtiny261/461/861 6 2588ES–AVR–08/10 ...

  • Page 7

    Register Summary Address Name Bit 7 0x3F (0x5F) SREG I 0x3E (0x5E) SPH – 0x3D (0x5D) SPL SP7 0x3C (0x5C) Reserved 0x3B (0x5B) GIMSK INT1 0x3A (0x5A) GIFR INTF1 0x39 (0x59) TIMSK OCIE1D 0x38 (0x58) TIFR OCF1D 0x37 (0x57) ...

  • Page 8

    ... Some of the Status Flags are cleared by writing a logical one to them. Note that, unlike most other AVRs, the CBI and SBI instructions will only operation the specified bit, and can therefore be used on registers containing such Status Flags. The CBI and SBI instructions work with registers 0x00 to 0x1F only. ATtiny261/461/861 8 2588ES–AVR–08/10 ...

  • Page 9

    Instruction Set Summary Mnemonics Operands ARITHMETIC AND LOGIC INSTRUCTIONS ADD Rd, Rr Add two Registers ADC Rd, Rr Add with Carry two Registers ADIW Rdl,K Add Immediate to Word SUB Rd, Rr Subtract two Registers SUBI Rd, K Subtract ...

  • Page 10

    ... Push Register on Stack POP Rd Pop Register from Stack MCU CONTROL INSTRUCTIONS NOP No Operation SLEEP Sleep WDR Watchdog Reset BREAK Break ATtiny261/461/861 10 Description Rd(n) ← Rd(n+1), n=0..6 Rd(3..0)←Rd(7..4),Rd(7..4)←Rd(3..0) SREG(s) ← 1 SREG(s) ← ← Rr(b) Rd(b) ← ← ← ← ← ← ← ...

  • Page 11

    ... Wide, Plastic Dual Inline Package (PDIP) 20S2 20-lead, 0.300" Wide, Plastic Gull Wing Smal Outline Package (SOIC) 2588ES–AVR–08/10 (4) Ordering Code ATtiny261V-10MU ATtiny261V-10MUR ATtiny261V-10PU ATtiny261V-10SU ATtiny261V-10SUR ATtiny261-20MU ATtiny261-20MUR ATtiny261-20PU ATtiny261-20SU ATtiny261-20SUR 188. Package Type (2) Package Operational Range 32M1-A 32M1-A Industrial 20P3 (-40° ...

  • Page 12

    ... R: tape & reel 32M1-A 32-pad 1.0 mm Body, Lead Pitch 0.50 mm, Micro Lead Frame Package (MLF) 20P3 20-lead, 0.300" Wide, Plastic Dual Inline Package (PDIP) 20S2 20-lead, 0.300" Wide, Plastic Gull Wing Smal Outline Package (SOIC) ATtiny261/461/861 12 (4) Ordering Code ATtiny461V-10MU ATtiny461V-10MUR ATtiny461V-10PU ...

  • Page 13

    ATtiny861 (3) Speed (MHz) Power Supply (V) 10 1.8 - 5.5 20 2.7 - 5.5 Notes: 1. These devices can also be supplied in wafer form. Please contact your local Atmel sales office for detailed ordering informa- tion and ...

  • Page 14

    ... Pin TOP VIEW Pin #1 Notch (0. BOTTOM VIEW Note: JEDEC Standard MO-220, Fig. 2 (Anvil Singulation), VHHD-2. 2325 Orchard Parkway San Jose, CA 95131 R ATtiny261/461/861 TITLE 32M1-A, 32-pad 1.0 mm Body, Lead Pitch 0.50 mm, 3 ...

  • Page 15

    A SEATING PLANE Notes: 1. This package conforms to JEDEC reference MS-001, Variation AD. 2. Dimensions D and E1 do not include mold Flash or Protrusion. Mold Flash or Protrusion shall not exceed 0.25 mm ...

  • Page 16

    ... ATtiny261/461/861 16 2588ES–AVR–08/10 ...

  • Page 17

    ... Errata 8.1 Errata ATtiny261 The revision letter in this section refers to the revision of the ATtiny261 device. 8.1.1 Rev A No known errata. 8.2 Errata ATtiny461 The revision letter in this section refers to the revision of the ATtiny461 device. 8.2.1 Rev B Yield improvement. No known errata. 8.2.2 Rev A No known errata. 8.3 Errata ATtiny861 The revision letter in this section refers to the revision of the ATtiny861 device ...

  • Page 18

    ... Table 6-10, “Capacitance for Low-Frequency Crystal Oscilla- 29. Figure 15-1 “Analog to Digital Converter Block Schematic” on page Table 18-8, “No. of Words in a Page and No. of Pages in the EEPROM,” on 173, No. of Pages from for ATtiny261. Table 19-1, “DC Characteristics. T “Data Retention” on page 6 “Clock Sources” on page 25 “ ...

  • Page 19

    Updated Figures: – – 7. Added Table: – 8. Updated Tables: – – – – 9. Updated Register Descriptions: – – – 10. Updated assembly program example in section 11. Updated wise noted).” on page 9.4 Rev. 2588B ...

  • Page 20

    ... Atmel products are not suitable for, and shall not be used in, automotive applications. Atmel’s products are not intended, authorized, or warranted for use as components in applications intended to support or sustain life. © 2010 Atmel Corporation. All rights reserved. Atmel trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others. International Atmel Asia Atmel Europe Unit 1-5 & ...