Cypress STK14C88-5 - Manual (Page 9)

STK14C88-5
Document Number: 001-51038 Rev. ** Page 9 of 17
AC Switching Characteristics
SRAM Read Cycle
Parameter
Description
35 ns 45 ns
Unit
Min Max Min Max
Cypress
Parameter
Alt
t
ACE
t
ELQV
Chip Enable Access Time 35 45 ns
t
RC
[9] t
AVAV,
t
ELEH
Read Cycle Time 35 45 ns
t
AA
[10] t
AVQV
Address Access Time 35 45 ns
t
DOE
t
GLQV
Output Enable to Data Valid 15 20 ns
t
OHA
[10] t
AXQX
Output Hold After Address Change 5 5 ns
t
LZCE
[11] t
ELQX
Chip Enable to Output Active 5 5 ns
t
HZCE
[11] t
EHQZ
Chip Disable to Output Inactive 13 15 ns
t
LZOE
[11] t
GLQX
Output Enable to Output Active 0 0 ns
t
HZOE
[11] t
GHQZ
Output Disable to Output Inactive 13 15 ns
t
PU
[8] t
ELICCH
Chip Enable to Power Active 0 0 ns
t
PD
[8] t
EHICCL
Chip Disable to Power Standby 35 45 ns
Switching Waveforms
Figure 8. SRAM Read Cycle 1: Address Controlled
[9, 10]
Figure 9. SRAM Read Cycle 2: CE and OE Controlled
[9]
W
5&
W
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W
2+$
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$''5(66
W
5&
&(
W
$&(
W
/=&(
W
3'
W
+=&(
2(
W
'2(
W
/=2(
W
+=2(
'$7$9$/,'
$&7,9(
67$1'%<
W
38
'4'$7$287
,&&
Notes
9. WE and HSB must be HIGH during SRAM Read cycles.
10. Device is continuously selected with CE and OE both Low.
11. Measured ±200 mV from steady state output voltage.
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