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SL811HS
Document #: 38-08008 Rev. *A
Page 25 of 29
7.6.2
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
150 ns minimum.
Parameter
Description
Min.
Typ.
Max.
tWR
Write pulse width
65 ns
tRD
Read pulse width
65 ns
tWCSU
Chip select set-up to nWR
0 ns
tWASU
A0 address set-up time
65 ns
tWAHLD
A0 address hold time
10 ns
tWDSU
Data to Write HIGH set-up time
60 ns
tWDHLD
Data hold time after Write HIGH
5 ns
tRACC
Data valid after Read LOW
20 ns
25 ns
tRDHLD
Data hold after Read HIGH
5 ns
tRCSU
Chip select LOW to Read LOW
0 ns
tRSHLD
NCS hold after Read HIGH
0 ns
TCSCS*
nCS inactive to nCS *asserted
85 ns
tWRRDL
nWR HIGH to nRD LOW
85ns
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
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