ATSAM3703 datasheet(15/36 Pages) ATMEL

15 / 36 page

6237A–DRMSD–29-May-06

ATSAM3703

Electrical Characteristics

8.1

Absolute Maximum Ratings

8.2

Recommended Operating Conditions

Note:

1. Operation at lower VC33 values down to VC18 is possible, however external timing may be impaired. Contact Atmel if you plan

to use these circuits with V

C33 outside the recommended operating range.

8.2.1

SSTL_2 Pads

Memory pads of ATSAM3703 are SSTL_2 compliant. This feature allows direct interfacing with

DDR SDRAM devices.

8.2.1.1

DDR SDRAM Operation

When using DDR SDRAM memory, it is recommended to use the schematic in Figure 8-1 for

Address, Data and Data Strobe.

In power-down mode, the command lines (WRAS, WCAS, WWE, WCKE) have a fixed level, in

contrast with address and data lines which are floating. To avoid consumption in power-down,

RT can be not implemented on command lines.

Temperature under bias.................................. -55

° C to 125° C

*NOTICE:

Stresses beyond those listed under “Absolute

Maximum Ratings” may cause permanent dam-

age to the device. This is a stress rating only and

functional operation of the device at these or any

other conditions beyond those indicated in the

Recommended Operating Conditions of this

specification is not implied. Exposure to absolute

maximum rating conditions for extended periods

may affect device reliability.

Storage Temperature ...................................... -65

° C to 150° C

Voltage on any pin

X1, PWDN .................................................. -0.3 to V

C18 + 0.3V

Others ......................................................... -0.3 to VC33 + 0.3V

Supply Voltage..........................................................................

VC18....................................................................-0.3V to 1.95V

C25...................................................................... -0.3V to 3.6V

VC33......................................................................-0.3V to 3.6V

Maximum IOL per I/O pin................................................. 4 mA

(except SSTL pins)

Maximum IOH per I/O pin

(except SSTL pins) .......................................................... 4 mA

Maximum IOL per SSTL pin ............................................ 8 mA

-VOUT = VTT - 0.405

Maximum IOH per I/O pin

-VOUT = VTT + 0.405...................................................... 8 mA

Table 8-1.

Recommended Operating Conditions

Symbol

Parameter

Min

Typ

Max

Unit

C18

Supply voltage

1.65

1.8

1.95

C33

Supply voltage(1)

33.3

3.6

PWRIN

Supply voltage PWRIN pin

1.75

1.9

1.95

Operating ambient temperature

°C

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