AT90S2313

2

Block Diagram

Figure 1. The AT90S2313 Block Diagram

The AT90S2313 provides the following features: 2K bytes

of In-System Programmable Flash, 128 bytes EEPROM,

128 bytes SRAM, 15 general purpose I/O lines, 32 general

purpose working registers, flexible timer/counters with

compare modes, internal and external interrupts, a pro-

grammable serial UART, programmable Watchdog Timer

with internal oscillator, an SPI serial port for Flash Memory

downloading and two software selectable power saving

modes. The Idle Mode stops the CPU while allowing the

SRAM, timer/counters, SPI port and interrupt system to

continue functioning. The power down mode saves the reg-

ister contents but freezes the oscillator, disabling all other

chip functions until the next interrupt or hardware reset.

The device is manufactured using Atmel’s high density

non-volatile memory technology. The on-chip In-System

Programmable Flash allows the program memory to be

reprogrammed in-system through an SPI serial interface or

by a conventional nonvolatile memory programmer. By

combining an enhanced RISC 8-bit CPU with In-System

Programmable Flash on a monolithic chip, the Atmel

AT90S2313 is a powerful microcontroller that provides a

highly flexible and cost effective solution to many embed-

ded control applications.

The AT90S2313 AVR is supported with a full suite of pro-

gram and system development tools including: C compil-

ers, macro assemblers, program debugger/simulators, in-

circuit emulators, and evaluation kits.