6

8008HS–AVR–04/11

ATtiny48/88

The ATtiny48/88 provides the following features:

• 4/8K bytes of In-System Programmable Flash

• 64/64 bytes EEPROM

• 256/512 bytes SRAM

• 24 general purpose I/O lines

– 28 in 32-lead TQFP, 32-pad QFN, and 32-ball UFBGA packages

• 32 general purpose working registers

• Two flexible Timer/Counters with compare modes

• Internal and external interrupts

• A byte-oriented, 2-wire serial interface

• An SPI serial port

• A 6-channel, 10-bit ADC

– 8 in 32-lead TQFP, 32-pad QFN, and 32-ball UFBGA packages

• A programmable Watchdog Timer with internal oscillator

• Three software selectable power saving modes.

The device includes the following modes for saving power:

• Idle mode: stops the CPU while allowing the timer/counter, ADC, analog comparator, SPI,

TWI, and interrupt system to continue functioning

• ADC Noise Reduction mode: minimizes switching noise during ADC conversions by stopping

the CPU and all I/O modules except the ADC

• Power-down mode: registers keep their contents and all chip functions are disabled until the

next interrupt or hardware reset

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

On-chip ISP Flash allows the program memory to be reprogrammed In-System through an SPI

serial interface, by a conventional non-volatile memory programmer, or by an on-chip boot pro-

gram running on the AVR core. The boot program can use any interface to download the

application program in the Flash memory. By combining an 8-bit RISC CPU with In-System Self-

Programmable Flash on a monolithic chip, the Atmel ATtiny48/88 is a powerful microcontroller

that provides a highly flexible and cost effective solution to many embedded control applications.

The ATtiny48/88 AVR is supported by a full suite of program and system development tools

including: C compilers, macro assemblers, program debugger/simulators and evaluation kits.

2.2

Comparison Between ATtiny48 and ATtiny88

Table 2-1.

Memory Size Summary

Device

Flash

EEPROM

RAM

ATtiny48

4K Bytes

64 Bytes

256 Bytes

ATtiny88

8K Bytes

64 Bytes

512 Bytes