6

8161AS–AVR–11/08

ATmega88PA

architecture is more code efficient while achieving throughputs up to ten times faster than con-

ventional CISC microcontrollers.

The ATmega88PA provides the following features: 8K bytes of In-System Programmable Flash

with Read-While-Write capabilities, 512 bytes EEPROM, 1K bytes SRAM, 23 general purpose

I/O lines, 32 general purpose working registers, three flexible Timer/Counters with compare

modes, internal and external interrupts, a serial programmable USART, a byte-oriented 2-wire

Serial Interface, an SPI serial port, a 6-channel 10-bit ADC (8 channels in TQFP and QFN/MLF

packages), a programmable Watchdog Timer with internal Oscillator, and five software select-

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

Timer/Counters, USART, 2-wire Serial Interface, SPI port, and interrupt system to continue func-

tioning. The Power-down mode saves the register contents but freezes the Oscillator, disabling

all other chip functions until the next interrupt or hardware reset. In Power-save mode, the asyn-

chronous timer continues to run, allowing the user to maintain a timer base while the rest of the

device is sleeping. The ADC Noise Reduction mode stops the CPU and all I/O modules except

asynchronous timer and 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. This

allows 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 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 Application Flash memory. Software in the Boot Flash section will

continue to run while the Application Flash section is updated, providing true Read-While-Write

operation. By combining an 8-bit RISC CPU with In-System Self-Programmable Flash on a

monolithic chip, the Atmel ATmega88PA is a powerful microcontroller that provides a highly flex-

ible and cost effective solution to many embedded control applications.

The ATmega88PA 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.

3.

Resources

A comprehensive set of development tools, application notes and datasheets are available for

download on http://www.atmel.com/avr.

Note:

1.

4.

Data Retention

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.