ATTINY45-20SI datasheet, PDF - EEWORLD Datasheet

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ATTINY45-20SI: DescriptionAVR series Microcontroller IC 8-bit 20MHz 4KB (2K x 16) Flash 8-SOIC; Categorysemiconductor The embedded processor and controller; File Size147KB，16 Pages; ManufacturerMicrochip; Websitehttps://www.microchip.com

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ATTINY45-20SI Overview

Atmel's tinyAVR® devices are optimized for applications requiring performance, power efficiency, ease of use and small packages. Small size for size-conscious applications Capacitive touch is fast and code is efficient Highly integrated 1.8V to 5.5V operation (ATtiny43U)

ATTINY45-20SI Parametric

Parameter Name	Attribute value
category	semiconductor;The embedded processor and controller
Maker	Microchip
series	AVR® ATtiny, Functional Safety (FuSa)
Package	Pipe fittings
core processor	AVR
Kernel specifications	8 bits
speed	20MHz
Connectivity	USI
Peripheral	Undervoltage detection/reset, POR, PWM, WDT
Number of I/Os	6
Program storage capacity	4KB（2K x 16）
Program memory type	flash memory
EEPROM capacity	256 x 8
RAM size	256 x 8
Voltage - Power supply (Vcc/Vdd)	2.7V ~ 5.5V
data converter	A/D 4x10b
Oscillator type	internal
Operating temperature	-40°C ~ 85°C（TA）
Installation type	surface mount type
Package/casing	8-SOIC (0.209", 5.30mm wide)
Supplier device packaging	8-SOIC
Basic product number	ATTINY45

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Features

•

High Performance, Low Power AVR

8-Bit Microcontroller

•

Advanced RISC Architecture

– 120 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 (ATtiny25/45/85)

Endurance: 10,000 Write/Erase Cycles

– 128/256/512 Bytes In-System Programmable EEPROM (ATtiny25/45/85)

Endurance: 100,000 Write/Erase Cycles

– 128/256/512 Bytes Internal SRAM (ATtiny25/45/85)

– Programming Lock for Self-Programming Flash Program and EEPROM Data

Security

Peripheral Features

– 8-bit Timer/Counter with Prescaler and Two PWM Channels

– 8-bit High Speed Timer/Counter with Separate Prescaler

2 High Frequency PWM Outputs with Separate Output Compare Registers

Programmable Dead Time Generator

– Universal Serial Interface with Start Condition Detector

– 10-bit ADC

4 Single Ended Channels

2 Differential ADC Channel Pairs with Programmable Gain (1x, 20x)

– Programmable Watchdog Timer with Separate On-chip Oscillator

– On-chip Analog Comparator

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, and Power-down Modes

– Enhanced Power-on Reset Circuit

– Programmable Brown-out Detection Circuit

– Internal Calibrated Oscillator

I/O and Packages

– Six Programmable I/O Lines

– 8-pin PDIP and 8-pin SOIC

Operating Voltage

– 1.8 - 5.5V for ATtiny25/45/85V

– 2.7 - 5.5V for ATtiny25/45/85

Speed Grade

– ATtiny25/45/85V: 0 - 4 MHz @ 1.8 - 5.5V, 0 - 10 MHz @ 2.7 - 5.5V

– ATtiny25/45/85: 0 - 10 MHz @ 2.7 - 5.5V, 0 - 20 MHz @ 4.5 - 5.5V

Industrial Temperature Range

Low Power Consumption

– Active Mode:

1 MHz, 1.8V: 450µA

– Power-down Mode:

0.1µA at 1.8V

•

8-bit

Microcontroller

with 2/4/8K

Bytes In-System

Programmable

Flash

ATtiny25/V

ATtiny45/V

ATtiny85/V

Preliminary

Summary

•

2586AS–AVR–02/05

Note: This is a summary document. A complete document

is available on our Web site at www.atmel.com.

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.

The ATtiny25/45/85 provides the following features: 2/4/8K byte of In-System Programmable

Flash, 128/256/512 bytes EEPROM, 128/256/256 bytes SRAM, 6 general purpose I/O lines, 32

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

speed Timer/Counter, Universal Serial Interface, Internal and External Interrupts, a 4-channel,

10-bit ADC, a programmable Watchdog Timer with internal Oscillator, and three software select-

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

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

Power-down mode saves the register contents, disabling all chip functions until the next Inter-

rupt or Hardware Reset. The ADC Noise Reduction mode stops the CPU and all I/O modules

except ADC, to minimize switching noise during ADC conversions.

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 ATtiny25/45/85 AVR is supported with a full suite of program and system development tools

including: C Compilers, Macro Assemblers, Program Debugger/Simulators, In-Circuit Emulators,

and Evaluation kits.

2.2

2.2.1

Pin Descriptions

VCC

Supply voltage.

2.2.2

GND

Ground.

2.2.3

Port B (PB5..PB0)

Port B is a 6-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The

Port B output buffers have symmetrical drive characteristics with both high sink and source

capability. As inputs, Port B pins that are externally pulled low will source current if the pull-up

resistors are activated. The Port B 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 ATtiny25/45/85 as listed on

page 60.

On the ATtiny25 device the programmable I/O ports PB3 and PB4 (pins 2 and 3) are exchanged

in the ATtiny15 compatibility mode for supporting the backward compatibility with ATtiny15.

2.2.4

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. The minimum pulse length is given in

Table 8-1 on page

37.

Shorter pulses are not guaranteed to generate a reset.

ATtiny25/45/85

2586AS–AVR–02/05

ATTINY45-20SI Related Products

	ATTINY45-20SI	ATTINY85V-10SI	ATTINY25-20SI
Description	AVR series Microcontroller IC 8-bit 20MHz 4KB (2K x 16) Flash 8-SOIC	AVR series Microcontroller IC 8-bit 10MHz 8KB (4K x 16) Flash 8-SOIC	AVR series Microcontroller IC 8-bit 20MHz 2KB (1K x 16) Flash 8-SOIC
Maker	Microchip	Microchip	Microchip
series	AVR® ATtiny, Functional Safety (FuSa)	AVR® ATtiny, Functional Safety (FuSa)	AVR® ATtiny, Functional Safety (FuSa)
Package	Pipe fittings	Pipe fittings	Pipe fittings
core processor	AVR	AVR	AVR
Kernel specifications	8 bits	8 bits	8 bits
speed	20MHz	10MHz	20MHz
Connectivity	USI	USI	USI
Peripheral	Undervoltage detection/reset, POR, PWM, WDT	Undervoltage detection/reset, POR, PWM, WDT	Undervoltage detection/reset, POR, PWM, WDT
Number of I/Os	6	6	6
Program storage capacity	4KB（2K x 16）	8KB（4K x 16）	2KB（1K x 16）
Program memory type	flash memory	flash memory	flash memory
EEPROM capacity	256 x 8	512 x 8	128 x 8
RAM size	256 x 8	512 x 8	128 x 8
Voltage - Power supply (Vcc/Vdd)	2.7V ~ 5.5V	1.8V ~ 5.5V	2.7V ~ 5.5V
data converter	A/D 4x10b	A/D 4x10b	A/D 4x10b
Oscillator type	internal	internal	internal
Operating temperature	-40°C ~ 85°C（TA）	-40°C ~ 85°C（TA）	-40°C ~ 85°C（TA）
Installation type	surface mount type	surface mount type	surface mount type
Package/casing	8-SOIC (0.209", 5.30mm wide)	8-SOIC (0.209", 5.30mm wide)	8-SOIC (0.209", 5.30mm wide)
Supplier device packaging	8-SOIC	8-SOIC	8-SOIC
Basic product number	ATTINY45	ATTINY85	ATTINY25

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