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Features

•

High Performance, Low Power AVR

8-Bit Microcontroller

•

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

with 2/4/8K

Bytes In-System

Programmable

Flash

ATtiny261/V*

ATtiny461/V

ATtiny861/V

Summary

*Mature

•

2588FS–AVR–06/2013

ATtiny261/461/861

1. Pin Configurations

Figure 1-1.

Pinout ATtiny261/461/861 and ATtiny261V/461V/861V

PDIP/SOIC

(MOSI/DI/SDA/OC1A/PCINT8) PB0

(MISO/DO/OC1A/PCINT9) PB1

(SCK/USCK/SCL/OC1B/PCINT10) PB2

(OC1B/PCINT11) PB3

VCC

GND

(ADC7/OC1D/CLKI/XTAL1/PCINT12) PB4

(ADC8/OC1D/CLKO/XTAL2/PCINT13) PB5

(ADC9/INT0/T0/PCINT14) PB6

(ADC10/RESET/PCINT15) PB7

PA0 (ADC0/DI/SDA/PCINT0)

PA1 (ADC1/DO/PCINT1)

PA2 (ADC2/INT1/USCK/SCL/PCINT2)

PA3 (AREF/PCINT3)

AGND

AVCC

PA4 (ADC3/ICP0/PCINT4)

PA5 (ADC4/AIN2/PCINT5)

PA6 (ADC5/AIN0/PCINT6)

PA7 (ADC6/AIN1/PCINT7)

PB2 (SCK/USCK/SCL/OC1B/PCINT10)

PB1 (MISO/DO/OC1A/PCINT9)

PB0 (MOSI/DI/SDA/OC1A/PCINT8)

PA0 (ADC0/DI/SDA/PCINT0)

PA1 (ADC1/DO/PCINT1)

(OC1B/PCINT11) PB3

VCC

GND

(ADC7/OC1D/CLKI/XTAL1/PCINT12) PB4

(ADC8/OC1D/CLKO/XTAL2/PCINT13) PB5

QFN/MLF

PA2 (ADC2/INT1/USCK/SCL/PCINT2)

PA3 (AREF/PCINT3)

AGND

AVCC

PA4 (ADC3/ICP0/PCINT4)

Note:

To ensure mechanical stability the center pad underneath the QFN/MLF package should be soldered to ground on the board.

(ADC9/INT0/T0/PCINT14) PB6

(ADC10/RESET/PCINT15) PB7

(ADC6/AIN1/PCINT7) PA7

(ADC5/AIN0/PCINT6) PA6

(ADC4/AIN2/PCINT5) PA5

2588FS–AVR–06/2013

ATtiny261/461/861

1.1

1.1.1

Pin Descriptions

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. It should be externally connected to VCC, even if some peripherals such as the ADC are not

used. If the ADC is used AVCC should be connected to VCC through a low-pass filter.

1.1.4

AGND

Analog ground.

1.1.5

Port A (PA7:PA0)

An 8-bit, bi-directional I/O port with internal pull-up resistors, individually selectable for each bit.

Output buffers have symmetrical drive characteristics with both high sink and source capability.

As inputs, port pins that are externally pulled low will source current if pull-up resistors have

been activated. Port pins are tri-stated when a reset condition becomes active, even if the clock

is not running.

Port A also serves the functions of various special features of the device, as listed on

page 63.

1.1.6

Port B (PB7:PB0)

An 8-bit, bi-directional I/O port with internal pull-up resistors, individually selectable for each bit.

Output buffers have symmetrical drive characteristics with both high sink and source capability.

As inputs, port pins that are externally pulled low will source current if pull-up resistors have

been activated. Port pins are tri-stated when a reset condition becomes active, even if the clock

is not running.

Port B also serves the functions of various special features of the device, as listed on

page 66.

1.1.7

RESET

Reset input. A low level on this pin for longer than the minimum pulse length will generate a

reset, even if the clock is not running and provided the reset pin has not been disabled. The min-

imum pulse length is given in

Table 19-4 on page 190.

Shorter pulses are not guaranteed to

generate a reset.

The reset pin can also be used as a (weak) I/O pin.

2588FS–AVR–06/2013

ATtiny261/461/861

2. 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.

Block Diagram

GND

VCC

Watchdog

Timer

Watchdog

Oscillator

Power

Supervision

POR / BOD &

RESET

debugWIRE

PROGRAM

LOGIC

Oscillator

Circuits /

Clock

Generation

Flash

SRAM

CPU

EEPROM

AVCC

AGND

AREF

Timer/Counter0

DATABUS

Timer/Counter1

A/D Conv.

USI

Analog Comp.

Internal

Bandgap

PORT B (8)

PORT A (8)

RESET

XTAL[1..2]

PB[0..7]

PA[0..7]

The AVR core combines a rich instruction set with 32 general purpose working registers. All 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 con-

ventional CISC microcontrollers.

2588FS–AVR–06/2013

ATtiny261/461/861

The ATtiny261/461/861 provides the following features: 2/4/8K byte of In-System Programmable

Flash, 128/256/512 bytes EEPROM, 128/256/512 bytes SRAM, 16 general purpose I/O lines, 32

general purpose working registers, an 8-bit Timer/Counter with compare modes, an 8-bit high

speed Timer/Counter, a Universal Serial Interface, Internal and External Interrupts, an 11-chan-

nel, 10-bit ADC, a programmable Watchdog Timer with internal oscillator, and four software

selectable power saving modes. Idle mode stops the CPU while allowing the SRAM,

Timer/Counter, ADC, Analog Comparator, and Interrupt system to continue functioning. Power-

down mode saves the register contents, disabling all chip functions until the next Interrupt or

Hardware Reset. ADC Noise Reduction mode stops the CPU and all I/O modules except ADC,

to minimize switching noise during ADC conversions. In Standby mode, the crystal/resonator

oscillator is running while the rest of the device is sleeping, allowing very fast start-up combined

with low power consumption.

The device is manufactured using Atmel’s high density non-volatile memory technology. The

On-chip ISP Flash allows the Program memory to be re-programmed In-System through an SPI

serial interface, by a conventional non-volatile memory programmer or by an 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.

2588FS–AVR–06/2013

参数对比

与ATTINY861V-10SUR相近的元器件有：ATTINY861-20MUR、ATTINY461V-10PU、ATTINY861-20MU、ATTINY461V-10MUR、ATTINY261V-10MU、ATTINY861-20PU、ATTINY261V-10MUR、ATTINY461V-10MU。描述及对比如下：

型号	ATTINY861V-10SUR	ATTINY861-20MUR	ATTINY461V-10PU	ATTINY861-20MU	ATTINY461V-10MUR	ATTINY261V-10MU	ATTINY861-20PU	ATTINY261V-10MUR	ATTINY461V-10MU
描述	8-bit Microcontrollers - MCU AVR 8K FL 512B EE 512B ADC 10MHz 1.8V		8-bit Microcontrollers - MCU 4kB Flash 0.256kB EEPROM 16 I/O Pins	Multilayer Ceramic Capacitors MLCC - SMD/SMT 10uF 25Volts 10%	8-bit Microcontrollers - MCU 4K FL 256B EE 256B SRAM ADC 10MHZ 1.8V	8-bit Microcontrollers - MCU AVR 2K FLASH 128B EE 128B SRAM ADC	8-bit Microcontrollers - MCU 8kB Flash 0.512kB EEPROM 6 I/O Pins	8-bit Microcontrollers - MCU 2K FLSH 128B EE 128B ADC 20 P-10MHz 1.8V	8-bit Microcontrollers - MCU AVR 4K FLASH 256B EE 256B SRAM ADC
是否Rohs认证	符合	符合	符合	符合	符合	符合	符合	符合	符合
零件包装代码	SOIC	QFN	DIP	QFN	QFN	QFN	DIP	QFN	QFN
包装说明	SOP, SOP20,.4	HVQCCN, LCC32,.2SQ,20	DIP, DIP20,.3	HVQCCN, LCC32,.2SQ,20	HVQCCN, LCC32,.2SQ,20	HVQCCN, LCC32,.2SQ,20	DIP, DIP20,.3	HVQCCN, LCC32,.2SQ,20	HVQCCN, LCC32,.2SQ,20
针数	20	32	20	32	32	32	20	32	32
Reach Compliance Code	compliant	compliant	compliant	compliant	compliant	unknown	compliant	unknown	compliant
具有ADC	YES	YES	YES	YES	YES	YES	YES	YES	YES
其他特性	ALSO OPERATES AT 1.8 V MINIMUM SUPPLY AT 4 MHZ	ALSO OPERATES AT 2.7 MINIMUM SUPPLY AT 10 MHZ	ALSO OPERATES AT 1.8 V MINIMUM SUPPLY AT 4 MHZ	ALSO OPERATES AT 2.7 MINIMUM SUPPLY AT 10 MHZ	ALSO OPERATES AT 1.8 V MINIMUM SUPPLY AT 4 MHZ	ALSO OPERATES AT 1.8 V MINIMUM SUPPLY AT 4 MHZ	ALSO OPERATES AT 2.7 MINIMUM SUPPLY AT 10 MHZ	ALSO OPERATES AT 1.8 V MINIMUM SUPPLY AT 4 MHZ	ALSO OPERATES AT 1.8 V MINIMUM SUPPLY AT 4 MHZ
位大小	8	8	8	8	8	8	8	8	8
CPU系列	AVR RISC	AVR RISC	AVR RISC	AVR RISC	AVR RISC	AVR RISC	AVR RISC	AVR RISC	AVR RISC
最大时钟频率	8.1 MHz	8.1 MHz	8.1 MHz	8.1 MHz	8.1 MHz	8.1 MHz	8.1 MHz	8.1 MHz	8.1 MHz
DAC 通道	NO	NO	NO	NO	NO	NO	NO	NO	NO
DMA 通道	NO	NO	NO	NO	NO	NO	NO	NO	NO
JESD-30 代码	R-PDSO-G20	S-XQCC-N32	R-PDIP-T20	S-XQCC-N32	S-XQCC-N32	S-XQCC-N32	R-PDIP-T20	S-XQCC-N32	S-XQCC-N32
长度	12.8 mm	5 mm	25.7385 mm	5 mm	5 mm	5 mm	25.7385 mm	5 mm	5 mm
I/O 线路数量	16	16	16	16	16	16	16	16	16
端子数量	20	32	20	32	32	32	20	32	32
最高工作温度	85 °C	85 °C	85 °C	85 °C	85 °C	85 °C	85 °C	85 °C	85 °C
最低工作温度	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C	-40 °C
PWM 通道	YES	YES	YES	YES	YES	YES	YES	YES	YES
封装主体材料	PLASTIC/EPOXY	UNSPECIFIED	PLASTIC/EPOXY	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED	PLASTIC/EPOXY	UNSPECIFIED	UNSPECIFIED
封装代码	SOP	HVQCCN	DIP	HVQCCN	HVQCCN	HVQCCN	DIP	HVQCCN	HVQCCN
封装等效代码	SOP20,.4	LCC32,.2SQ,20	DIP20,.3	LCC32,.2SQ,20	LCC32,.2SQ,20	LCC32,.2SQ,20	DIP20,.3	LCC32,.2SQ,20	LCC32,.2SQ,20
封装形状	RECTANGULAR	SQUARE	RECTANGULAR	SQUARE	SQUARE	SQUARE	RECTANGULAR	SQUARE	SQUARE
封装形式	SMALL OUTLINE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	IN-LINE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	IN-LINE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
电源	2/5 V	3/5 V	2/5 V	3/5 V	2/5 V	2/5 V	3/5 V	2/5 V	2/5 V
认证状态	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
RAM（字节）	512	512	256	512	256	128	512	128	256
ROM（单词）	4096	4096	2048	4096	2048	2048	4096	2048	2048
ROM可编程性	FLASH	FLASH	FLASH	FLASH	FLASH	FLASH	FLASH	FLASH	FLASH
座面最大高度	2.65 mm	1 mm	5.334 mm	1 mm	1 mm	1 mm	5.334 mm	1 mm	1 mm
速度	10 MHz	20 MHz	10 MHz	20 MHz	10 MHz	10 MHz	20 MHz	10 MHz	10 MHz
最大压摆率	9 mA	9 mA	9 mA	9 mA	9 mA	9 mA	9 mA	9 mA	9 mA
最大供电电压	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V
最小供电电压	2.7 V	4.5 V	2.7 V	4.5 V	2.7 V	2.7 V	4.5 V	2.7 V	2.7 V
标称供电电压	3 V	5 V	3 V	5 V	3 V	3 V	5 V	3 V	3 V
表面贴装	YES	YES	NO	YES	YES	YES	NO	YES	YES
技术	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
温度等级	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
端子形式	GULL WING	NO LEAD	THROUGH-HOLE	NO LEAD	NO LEAD	NO LEAD	THROUGH-HOLE	NO LEAD	NO LEAD
端子节距	1.27 mm	0.5 mm	2.54 mm	0.5 mm	0.5 mm	0.5 mm	2.54 mm	0.5 mm	0.5 mm
端子位置	DUAL	QUAD	DUAL	QUAD	QUAD	QUAD	DUAL	QUAD	QUAD
宽度	7.5 mm	5 mm	7.62 mm	5 mm	5 mm	5 mm	7.62 mm	5 mm	5 mm
uPs/uCs/外围集成电路类型	MICROCONTROLLER, RISC	MICROCONTROLLER, RISC	MICROCONTROLLER, RISC	MICROCONTROLLER, RISC	MICROCONTROLLER, RISC	MICROCONTROLLER, RISC	MICROCONTROLLER, RISC	MICROCONTROLLER, RISC	MICROCONTROLLER, RISC
厂商名称	Atmel (Microchip)	Atmel (Microchip)	Atmel (Microchip)	Atmel (Microchip)	-	Atmel (Microchip)	Atmel (Microchip)	Atmel (Microchip)	Atmel (Microchip)
ECCN代码	EAR99	EAR99	EAR99	EAR99	EAR99	-	EAR99	-	EAR99
核心架构	AVR	AVR	AVR	AVR	AVR	-	AVR	-	AVR
设备核心	AVR	AVR	AVR	AVR	AVR	-	AVR	-	AVR
时钟速度	20	20	20	20	20	-	20	-	20
内存	0.5	0.5	0.25	0.5	0.25	-	0.5	-	0.25
闪存	8	8	4	8	4	-	8	-	4
Adc通道	11	11	11	11	11	-	11	-	11
ADC分辨率	10	10	10	10	10	-	10	-	10
片上程序ROM宽度	16	16	16	16	16	-	16	-	16