DSP56004ROM datasheet(28/82 Pages) FREESCALE

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2-4

DSP56004/D, Rev. 3

MOTOROLA

Specifications

AC Electrical Characteristics

AC ELECTRICAL CHARACTERISTICS

The timing waveforms in the AC Electrical Characteristics are tested with a VIL

maximum of 0.5 V and a VIH minimum of 2.4 V for all pins, except EXTAL, RESET,

MODA, MODB, MODC, and SHI pins (MOSI/HA0, SS/HA2, MISO/SDA, SCK/

SCL, HREQ). These pins are tested using the input levels set forth in the DC Electrical

Characteristics. AC timing specifications that are referenced to a device input signal

are measured in production with respect to the 50% point of the respective input

signal’s transition. DSP56004 output levels are measured with the production test

machine VOL and VOH reference levels set at 0.8 V and 2.0 V, respectively.

All output delays are given for a 50 pF load unless otherwise specified.

For load capacitance greater than 50 pF, the drive capability of the output pins

typically decreases linearly:

1. At 1.5 ns per 10 pF of additional capacitance at all output pins except MOSI/

HA0, MISO/SDA, SCK/SCL, HREQ

2. At 1.0 ns per 10 pF of additional capacitance at output pins MOSI/HA0,

MISO/SDA, SCK/SCL, HREQ (in SPI mode only)

PLL supply current

—

0.7

1.1

—

1.0

1.5

—

1.2

2.0

Input capacitance3

CIN

—

—10—

Notes:

The SHI inputs are: MOSI/HA0, SS/HA2, MISO/SDA, SCK/SCL, and HREQ.

In order to obtain these results, all inputs must be terminated (i.e., not allowed to float). PLL signals are

disabled during Stop state.

Periodically sampled and not 100% tested

Maximum values are derived using the methodology described in Section 4. Actual maximums are

application dependent and may vary widely from these numbers.

Table 2-3

DC Electrical Characteristics

Characteristics

Symbol

50 MHz

66 MHz

81 MHz

Unit

Min Typ Max

Min

Typ

Max

Freescale Semiconductor, Inc.

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