DSP56321 datasheet(22/84 Pages) FREESCALE

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DSP56321 Technical Data, Rev. 11

2-2

Freescale Semiconductor

Specifications

2.2 Thermal Characteristics

2.3 DC Electrical Characteristics

Table 2-2.

Thermal Characteristics

Thermal Resistance Characteristic

Symbol

MAP-BGA

Value

Unit

Junction-to-ambient, natural convection, single-layer board (1s)1,2

RθJA

°C/W

Junction-to-ambient, natural convection, four-layer board (2s2p)1,3

RθJMA

°C/W

Junction-to-ambient, @200 ft/min air flow, single-layer board (1s)1,3

RθJMA

°C/W

Junction-to-ambient, @200 ft/min air flow, four-layer board (2s2p)1,3

RθJMA

°C/W

Junction-to-board

RθJB

°C/W

Junction-to-case thermal resistance

RθJC

°C/W

Notes:

Junction temperature is a function of die size, on-chip power dissipation, package thermal resistance, mounting site (board)

temperature, ambient temperature, air flow, power dissipation of other components on the board, and board thermal

resistance.

Per SEMI G38-87 and JEDEC JESD51-2 with the single-layer board horizontal.

Per JEDEC JESD51-6 with the board horizontal.

Thermal resistance between the die and the printed circuit board per JEDEC JESD51-8. Board temperature is measured on

the top surface of the board near the package.

Thermal resistance between the die and the case top surface as measured by the cold plate method (MIL SPEC-883 Method

1012.1).

Table 2-3.

DC Electrical Characteristics7

Characteristics

Symbol

Min

Typ

Max

Unit

Supply voltage

•Core (VCCQL)

•I/O (VCCQH, VCCA, VCCD, VCCC, VCCH, and VCCS)

1.5

3.0

1.6

3.3

1.7

3.6

Input high voltage

•

D[0–23], BG, BB, TA

•

MOD/IRQ

2 RESET, PINIT/NMI and all

JTAG/ESSI/SCI/Timer/HI08 pins

•EXTAL9

VIH

VIHP

VIHX

2.0

0.8

× VCCQH

—

VCCQH + 0.3

VCCQH

Input low voltage

•

D[0–23], BG, BB, TA, MOD/IRQ2, RESET, PINIT

•

All JTAG/ESSI/SCI/Timer/HI08 pins

•EXTAL9

VIL

VILP

VILX

–0.3

—

0.8

0.2

× V

CCQH

Input leakage current

IIN

–10

—

µA

High impedance (off-state) input current

(@ 2.4 V / 0.4 V)

ITSI

–10

—

µA

Output high voltage8

•TTL (IOH = –0.4 mA)

•CMOS (IOH = –10 µA)

VOH

2.4

VCCQH – 0.01

—

Output low voltage

•TTL (IOL = 3.0 mA)

•CMOS (IOL = 10 µA)

VOL

—

0.4

0.01

DSP56321 Datasheet(PDF) 22 Page - Freescale Semiconductor, Inc

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