SPEAR320-2 datasheet(45/73 Pages) STMICROELECTRONICS

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SPEAr320

Electrical characteristics

Doc ID 16755 Rev 5

45/73

Electrical characteristics

6.1

Absolute maximum ratings

This product contains devices to protect the inputs against damage due to high/low static

voltages. However it is advisable to take normal precaution to avoid application of any

voltage higher/lower than the specified maximum/minimum rated voltages.

The absolute maximum rating is the maximum stress that can be applied to a device without

causing permanent damage. However, extended exposure to minimum/maximum ratings

may affect long-term device reliability.

6.2

Maximum power consumption

Note:

These values take into consideration the worst cases of process variation and voltage range

and must be used to design the power supply section of the board.

Table 16.

Absolute maximum ratings

Symbol

Parameter

Minimum value Maximum value

Unit

VDD 1.2

Supply voltage for the core

- 0.3

1.44

VDD 3.3

Supply voltage for the I/Os

- 0.3

3.9

VDD 2.5

Supply voltage for the analog

blocks

- 0.3

VDD 1.8

Supply voltage for the DRAM

interface

- 0.3

2.16

VDD RTC

RTC supply voltage

-0.3

2.16

TSTG

Storage temperature

-55

150

°C

Junction temperature

-40

125

°C

Table 17.

Maximum power consumption

Symbol

Description

Max

Unit

IDD(1.2Vsupply)

Current consumption of VDD 1.2 supply voltage for the

core

400

IDD(1.8Vsupply)

Current consumption of VDD 1.8 supply voltage for the

DRAM interface (1)

Peak current with Linux memory test (50% write and 50% read) plus DMA reading memory.

150

IDD(RTC)

Current consumption of RTC supply voltage

µA

IDD(2.5Vsupply)

Current consumption of 2.5V supply voltage for the

analog blocks

IDD(3.3Vsupply)

Current consumption of 3.3V supply voltage for the I/Os

(2)

With 30 logic channels connected to the device and simultaneously switching at 10 MHz.

Maximum power consumption(3)

930

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