Atmel AVR AT90S2313 User Manual

12
AT90S2313
0839G–08/01
Operand address is contained in 6 bits of the instruction word. n is the destination or
source register address.
Data Direct Figure 12. Direct Data Addressing
A 16-bit data address is contained in the 16 LSBs of a 2-word instruction. Rd/Rr specify
the destination or source register.
Data Indirect with
Displacement
Figure 13. Data Indirect with Displacement
Operand address is the result of the Y- or Z-register contents added to the address con-
tained in 6 bits of the instruction word.
Data Indirect Figure 14. Data Indirect Addressing
Operand address is the contents of the X-, Y- or Z-register.

Atmel AVR AT90S2313 Specifications

General

Architecture	AVR
CPU	8-bit
Manufacturer	Atmel
Model	AT90S2313
Flash Memory	2 KB
SRAM	128 Bytes
EEPROM	128 Bytes
Clock Speed	Up to 10 MHz
I/O Pins	15
Timer	1 x 8-bit, 1 x 16-bit
Operating Temperature Range	-40°C to +85°C
Data Bus Width	8-bit
Communication Interfaces	USART
Package	SOIC
Series	AVR AT90S

Summary

Features

Pin Configuration

Pin Descriptions

Explains the function of each pin on the microcontroller.

Crystal Oscillator

Architectural Overview

Program and Data Addressing Modes

Explains how the MCU accesses memory.

Memory Access and Instruction Execution Timing

I/O Memory

Reset and Interrupt Handling

Describes reset sources and interrupt vectors.

Watchdog Timer

Details the Watchdog Timer functionality and control.

EEPROM Read/Write Access

UART

Data Transmission

Data Reception

Analog Comparator

I/O Ports

Memory Programming

Programming the Flash and EEPROM

Procedures for writing Flash and EEPROM.

Parallel Programming

Details the parallel programming interface and commands.

Serial Downloading

Explains serial programming via SPI.