ATtiny25 datasheet(4/196 Pages) ATMEL

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7598H–AVR–07/09

ATtiny25/45/85

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

Automotive Quality Grade

The ATtiny25/45/85 have been developed and manufactured according to the most stringent

requirements of the international standard ISO-TS-16949. This data sheet contains limit values

extracted from the results of extensive characterization (Temperature and Voltage). The quality

and reliability of the ATtiny25/45/85 have been verified during regular product qualification as

per AEC-Q100 grade 1.

As indicated in the ordering information paragraph, the products are available in three different

temperature grades, but with equivalent quality and reliability objectives. Different temperature

identifiers have been defined as listed in Table 2-1.

Table 2-1.

Temperature Grade Identification for Automotive Products

Temperature

Identifier

Comments

-40 ; +85

Similar to Industrial Temperature Grade but with Automotive

Quality

-40 ; +105

Reduced Automotive Temperature Range

-40 ; +125

Full AutomotiveTemperature Range

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