ATA6602 Ver la hoja de datos (PDF) - Atmel Corporation

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componentes Descripción

Fabricante

ATA6602

Microcontroller with LIN Transceiver, 5V Regulator and Watchdog

Atmel Corporation 

4.2.3

Comparison Between ATA6602/ATA6603

The ATA6602 and ATA6603 differ only in memory sizes, boot loader support, and interrupt vec-

tor sizes. Table 4-1 summarizes the different memory and interrupt vector sizes for the two

devices.

Table 4-1. Memory Size Summary

Device

Flash

EEPROM

ATA6602

8 Kbytes

512 Bytes

ATA6603

16 Kbytes

512 Bytes

RAM

1 Kbyte

1 Kbyte

Interrupt Vector Size

1 instruction word/vector

2 instruction words/vector

ATA6602 and ATA6603 support a real Read-While-Write Self-Programming mechanism. There

is a separate Boot Loader Section, and the SPM instruction can only execute from there.

4.2.4 Pin Descriptions

4.2.4.1

VCC

Digital supply voltage.

4.2.4.2

GND

Ground.

4.2.4.3

Port B (PB7:0) XTAL1/XTAL2/TOSC1/TOSC2

Port B is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The

Port B output buffers have symmetrical drive characteristics with both high sink and source

capability. As inputs, Port B pins that are externally pulled low will source current if the pull-up

resistors are activated. The Port B pins are tri-stated when a reset condition becomes active,

even if the clock is not running.

Depending on the clock selection fuse settings, PB6 can be used as input to the inverting oscil-

lator amplifier.

Depending on the clock selection fuse settings, PB7 can be used as input to the inverting oscil-

lator amplifier.

If the internal calibrated RC oscillator is used as chip clock source, PB7..6 is used as TOSC2..1

input for the asynchronous Timer/Counter2 if the AS2 bit in ASSR is set.

The various special features of Port B are elaborated in “Alternate Functions of Port B” on page

94 and “System Clock and Clock Options” on page 48.

28 ATA6602/ATA6603

4921C–AUTO–01/07

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