DSP56321 View Datasheet(PDF) - Freescale Semiconductor

Part Name

Description

Manufacturer

DSP56321

24-Bit Digital Signal Processor

Freescale Semiconductor 

Specifications

2.2 Thermal 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

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

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

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

Junction-to-board4

Junction-to-case thermal resistance5

RθJA

RθJMA

RθJMA

RθJMA

RθJB

RθJC

44

°C/W

25

°C/W

35

°C/W

22

°C/W

13

°C/W

7

°C/W

Notes: 1. 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.

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

3. Per JEDEC JESD51-6 with the board horizontal.

4. 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.

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

1012.1).

2.3 DC Electrical Characteristics

Table 2-3. DC Electrical Characteristics7

Characteristics

Supply voltage1:

• Core (VCCQL)

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

Input high voltage

• D[0–23], BG, BB, TA

• MOD/IRQ2 RESET, PINIT/NMI and all

JTAG/ESSI/SCI/Timer/HI08 pins

• EXTAL9

Input low voltage

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

• All JTAG/ESSI/SCI/Timer/HI08 pins

• EXTAL9

Input leakage current

High impedance (off-state) input current

(@ 2.4 V / 0.4 V)

Output high voltage8

• TTL (IOH = –0.4 mA)6

• CMOS (IOH = –10 µA)6

Output low voltage8

• TTL (IOL = 3.0 mA)6

• CMOS (IOL = 10 µA)6

Symbol

Min

VIH

VIHP

VIHX

VIL

VILP

VILX

IIN

ITSI

VOH

VOL

1.5

3.0

2.0

2.0

0.8 × VCCQH

–0.3

–0.3

–0.3

–10

–10

2.4

VCCQH – 0.01

—

—

Typ

1.6

3.3

—

—

—

—

—

—

—

—

—

—

—

—

Max

Unit

1.7

V

3.6

V

VCCQH + 0.3

V

VCCQH + 0.3

V

VCCQH

V

0.8

V

0.8

V

0.2 × VCCQH

V

10

µA

10

µA

—

V

—

V

0.4

V

0.01

V

DSP56321 Technical Data, Rev. 11

2-2

Freescale Semiconductor

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