DSM2180F3 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

MFG CO.

DSM2180F3

DSM (Digital Signal Processor System Memory) for analog devices ADSP-218X family (5 V supply)

STMicroelectronics 

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DSM2180F3

Table 25. AC Symbols for PLD Timing

Signal Letters

Signal Behavior

A Address Input

t

Time

C CEout Output

L

Logic Level Low

D Input Data

H Logic Level High

E E Input

V Valid

N Reset Input or Output

X No Longer a Valid Logic Level

P Port Signal Output

Z

Float

Q Output Data

PW Pulse Width

R RD Input (read)

S Chip Select Input, BMS, DMS, IOMS, or FSx

W WR Input (write)

B

VSTBY Output

) M Output Macrocell

t(s Example: tAVWL – Time from Address Valid to

c Write input Low.

rodu Figure 28. Switching Waveforms – Key

P WAVEFORMS

INPUTS

lete STEADY INPUT

OUTPUTS

STEADY OUTPUT

bso MAY CHANGE FROM

OHI TO LO

) - MAY CHANGE FROM

LO TO HI

WILL BE CHANGING

FROM HI TO LO

WILL BE CHANGING

LO TO HI

uct(s DON'T CARE

Obsolete Prod OUTPUTS ONLY

CHANGING, STATE

UNKNOWN

CENTER LINE IS

TRI-STATE

AI03102

47/63

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