REV. A

ADSP-2189M

–15–

TIMING PARAMETERS

GENERAL NOTES

Use the exact timing information given. Do not attempt to

derive parameters from the addition or subtraction of others.

While addition or subtraction would yield meaningful results for

an individual device, the values given in this data sheet reflect

statistical variations and worst cases. Consequently, you cannot

meaningfully add up parameters to derive longer times.

TIMING NOTES

Switching characteristics specify how the processor changes its

signals. You have no control over this timing—circuitry external

to the processor must be designed for compatibility with these

signal characteristics. Switching characteristics tell you what the

processor will do in a given circumstance. You can also use

switching characteristics to ensure that any timing requirement

of a device connected to the processor (such as memory) is

satisfied.

Timing requirements apply to signals that are controlled by

circuitry external to the processor, such as the data input for a

read operation. Timing requirements guarantee that the proces-

sor operates correctly with other devices.

MEMORY TIMING SPECIFICATIONS

The table below shows common memory device specifications

and the corresponding ADSP-2189M timing parameters, for

your convenience.

Memory

Timing

Device

Parameter

Specification

Parameter Definition

1

Address Setup to

A0–A13,

xMS Setup before

Write Start

WR Low

Address Setup to

A0–A13,

xMS Setup before

Write End

WR Deasserted

Address Hold Time

A0–A13,

xMS Hold before

WR Low

Data Setup Time

Data Setup before

WR

High

Data Hold Time

Data Hold after

WR High

OE to Data Valid

RD Low to Data Valid

A0–A13,

xMS to Data Valid

NOTE

1

xMS = PMS, DMS, BMS, CMS or IOMS.

ABSOLUTE MAXIMUM RATINGS

1

Value

Parameter

Min

Max

–0.3 V

+3.0 V

–0.3 V

+4.6 V

Input Voltage

2

–0.5 V

+4.6 V

Output Voltage Swing

3

–0.5 V

Operating Temperature Range (Ambient)

–40

°C +85°C

Storage Temperature Range

–65

°C +150°C

Lead Temperature (5 sec) LQFP

+280

°C

NOTES

nent damage to the device. These are stress ratings only; functional operation of the

device at these or any other conditions above those indicated in the operational

sections of this specification is not implied. Exposure to absolute maximum rating

conditions for extended periods may affect device reliability.

TFS1, A1–A13, PF0–PF7) and Input only pins (CLKIN,

RESET, BR, DR0,

DR1,

PWD).

BG, PMS, DMS, BMS, IOMS, CMS, RD, WR, PWDACK,

A0, DT0, DT1, CLKOUT, FL2-0,

BGH).

CAUTION

ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily

accumulate on the human body and test equipment and can discharge without detection.

Although the ADSP-2189M features proprietary ESD protection circuitry, permanent damage

may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD

precautions are recommended to avoid performance degradation or loss of functionality.

WARNING!

ESD SENSITIVE DEVICE