ZPSD301 datasheet(46/85 Pages) STMICROELECTRONICS

46 / 85 page

PSD3XX Family

NOTES:

1. ADi = any address line.

2. CSOi = any of the chip-select output signals coming through Port B (CS0–CS7) or through Port C (CS8–CS10).

3. Direct PAD input = any of the following direct PAD input lines: CSI/A19 as transparent A19, RD/E/DS, WR or

R/W, transparent PC0–PC2, ALE (or AS).

4. Control signals RD/E/DS or WR or R/W.

*-15 speed available only on ZPSD311V.

-15*

-20

-25

CMiser Turbo

Symbol

Parameter

On =

Off =

Unit

Min

Max

Min

Max

Min

Max

Add

Track Mode Address

Propagation Delay:

T23

CSADOUT1 Already True

Latched Address Outputs,

Port A

Track Mode Address

Propagation Delay:

T23A

CSADOUT1 Becomes True

During ALE or AS

Track Mode Trailing Edge of

T24

ALE or AS to Address High-Z

T25

Track Mode Read Propagation

Delay

T26

Track Mode Read Hold Time

T27

Track Mode Write Cycle,

Data Propagation Delay

Track Mode Write Cycle,

T28

Write to Data Propagation Delay

65875

Hold Time of Port A Valid

T29

During Write CSOi2 Trailing Edge

T30

CSI Active to CSOi2 Active

T31

CSI Inactive to CSOi2 Inactive

T32

Direct PAD Input3 as Hold Time

T33

R/W Active to E or DS Start

T34

E or DS End to R/W

T35

AS Inactive to E high

T36

Address to Leading Edge

of Write

18.8 Timing Parameters – ZPSD3XXV (3 V devices only) (cont.)

ZPSD301 数据表(PDF) 46 Page - STMicroelectronics

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