Document Number: 38-06001 Rev. *K Page 8 of 22
Switching Characteristics
Over the Operating Range
Parameter
[6]
Description
-15 -20
Unit
Min Max Min Max
t
RC
Read Cycle Time 25 – 30 – ns
t
A
Access Time – 15 – 20 ns
t
RR
Read Recovery Time 10 – 10 – ns
t
PR
Read Pulse Width 15 – 20 – ns
t
LZR
[7]
Read LOW to Low Z 3 – 3 – ns
t
DVR
[7, 8]
Data Valid after Read HIGH 5 – 5 – ns
t
HZR
[7, 8]
Read HIGH to High Z – 15 – 15 ns
t
WC
Write Cycle Time 25 – 30 – ns
t
PW
Write Pulse Width 15 – 20 – ns
t
HWZ
[7]
Write HIGH to Low Z 5 – 5 – ns
t
WR
Write Recovery Time 10 – 10 – ns
t
SD
Data Setup Time 8 – 12 – ns
t
HD
Data Hold Time 0 – 0 – ns
t
MRSC
MR Cycle Time 25 – 30 – ns
t
PMR
MR Pulse Width 15 – 20 – ns
t
RMR
MR Recovery Time 10 – 10 – ns
t
RPW
Read HIGH to MR HIGH 15 – 20 – ns
t
WPW
Write HIGH to MR HIGH 15 – 20 – ns
t
RTC
Retransmit Cycle Time 25 – 30 – ns
t
PRT
Retransmit Pulse Width 15 – 20 – ns
t
RTR
Retransmit Recovery Time 10 – 10 – ns
t
EFL
MR to EF LOW – 25 – 30 ns
t
HFH
MR to HF HIGH – 25 – 30 ns
t
FFH
MR to FF HIGH – 25 – 30 ns
t
REF
Read LOW to EF LOW – 15 – 20 ns
t
RFF
Read HIGH to FF HIGH – 15 – 20 ns
t
WEF
Write HIGH to EF HIGH – 15 – 20 ns
t
WFF
Write LOW to FF LOW – 15 – 20 ns
t
WHF
Write LOW to HF LOW – 15 – 20 ns
t
RHF
Read HIGH to HF HIGH – 15 – 20 ns
t
RAE
Effective Read from Write HIGH – 15 – 20 ns
t
RPE
Effective Read Pulse Width after EF HIGH 15 – 20 – ns
t
WAF
Effective Write from Read HIGH – 15 – 20 ns
t
WPF
Effective Write Pulse Width after FF HIGH 15 – 20 – ns
t
XOL
Expansion Out LOW Delay from Clock – 15 – 20 ns
t
XOH
Expansion Out HIGH Delay from Clock – 15 – 20 ns
Notes
6. Test conditions assume signal transition time of 3 ns or less, timing reference levels of 1.5 V and output loading of the specified I
OL
/I
OH
and 30 pF load capacitance,
as in part (a) of Figure 4 on page 7, unless otherwise specified.
7. t
HZR
transition is measured at +200 mV from V
OL
and –200 mV from V
OH
. t
DVR
transition is measured at the 1.5V level. t
HWZ
and t
LZR
transition is measured at
±100 mV from the steady state.
8. t
HZR
and t
DVR
use capacitance loading as in part (b) of Figure 4 on page 7.
