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I/o read cycle, Sl811hs – Cypress SL811HS User Manual

Page 27

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SL811HS

Document 38-08008 Rev. *D

Page 27 of 32

I/O Read Cycle

Note nCS can be kept LOW during multiple Read cycles provided nRD is cycled. Rd Cycle Time for Auto Inc Mode Reads is 170
ns minimum.

nRD

A0

D0-D7

DATA

twr

twahld

twdhld

twasu

twdsu

trdhld

I/O Read Cycle from Register or Memory Buffer

Register or Memory

Address

trdp

nWR

trshld

trcsu

nCS

tracc

Tcscs *Note

twrrdl

Parameter

Description

Min.

Typ.

Max.

t

WR

Write pulse width

85 ns

t

RD

Read pulse width

85 ns

t

WCSU

Chip select set-up to nWR

0 ns

t

WASU

A0 address set-up time

85 ns

t

WAHLD

A0 address hold time

10 ns

t

WDSU

Data to Write HIGH set-up time

85 ns

t

WDHLD

Data hold time after Write HIGH

5 ns

t

RACC

Data valid after Read LOW

25 ns

85 ns

t

RDHLD

Data hold after Read HIGH

40 ns

t

RCSU

Chip select LOW to Read LOW

0 ns

t

RSHLD

NCS hold after Read HIGH

0 ns

T

CSCS

*

nCS inactive to nCS *asserted

85 ns

t

WRRDL

nWR HIGH to nRD LOW

85ns