AUSTIN SEMICONDUCTOR, INC.
ADVANCE INFORMATION
nvSRAM
AS8nvLC512K32
Austin Semiconductor, Inc.
AC Switching Characteristics
Parameters
20ꢀns
25ꢀns
45ꢀns
AustinꢀSemiꢀ
Altꢀ
Parameters Parameters
Description
Min
Max
Min
Max
Min
Max
Unit
SRAMꢀReadꢀCycle
tACE
tACS
tRC
tAA
tOE
tOH
tLZ
tHZ
tOLZ
tOHZ
tPA
tPS
Ͳ
ChipꢀEnableꢀAccessꢀTime
20
25
45
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
13
tRCꢀ
ReadꢀCycleꢀTime
20
25
45
ꢀ14
tAA
AddressꢀAccessꢀTime
20
10
25
12
45
20
tDOE
OutputꢀEnableꢀtoꢀDataꢀValid
OutputꢀHoldꢀAfterꢀAddressꢀChange
ChipꢀEnableꢀtoꢀOutputꢀActive
ChipꢀDisableꢀtoꢀOutputꢀActive
OutputꢀEnableꢀtoꢀOutputꢀActive
OutputꢀDisableꢀtoꢀOutputꢀInactive
ChipꢀEnableꢀtoꢀPowerꢀActive
ChipꢀDisableꢀtoꢀPowerꢀStandby
ByteꢀEnableꢀtoꢀDataꢀValid
tOHAꢀ14
tLZCEꢀ12,ꢀ15
tHZCEꢀ12,ꢀ15
tLZOEꢀ12,ꢀ15
tHZOEꢀ12,ꢀ15
tPUꢀ12
2
2
2
2
2
2
8
8
10
10
15
15
0
0
0
0
0
0
tPDꢀ12
20
10
25
12
45
20
tDBE
tLZBEꢀ12
tHZBEꢀ12
Ͳ
ByteꢀEnableꢀtoꢀOutputꢀActive
ByteꢀDisableꢀtoꢀOutputꢀInactive
0
0
0
Ͳ
8
10
15
SRAMꢀWriteꢀCycle
tWC
tPWE
tSCE
tSD
tWC
tWP
tCW
tDW
tDH
tAW
tAS
WriteꢀCycleꢀTime
20
15
15
8
25
20
20
10
0
45
30
30
15
0
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
WriteꢀPulseꢀWidth
ChipꢀEnableꢀtoꢀEndꢀofꢀWrite
DataꢀSetupꢀtoꢀEndꢀofꢀWrite
DataꢀHoldꢀAfterꢀEndꢀofꢀWrite
AddressꢀSetupꢀtoꢀEndꢀofꢀWrite
AddressꢀSetupꢀtoꢀEndꢀofꢀWrite
AddressꢀHoldꢀAfterꢀEndꢀofꢀWrite
WriteꢀEnableꢀtoꢀOutputꢀDisable
OutputꢀActiveꢀafterꢀEndꢀofꢀWrite
ByteꢀEnableꢀtoꢀEndꢀofꢀWrite
tHD
0
tAW
tSA
15
0
20
0
30
0
tHA
tWR
tWZ
tOW
Ͳ
0
0
0
12,ꢀ15,ꢀ16
tHZWEꢀ
8
10
15
12,ꢀ15
tLZWEꢀ
tBW
2
2
2
15
20
30
Switching Waveforms
SRAM Read Cycle #1: Address Controlled13, 14, 17
tRC
Address
Address Valid
tAA
Output Data Valid
Previous Data Valid
tOHA
Data Output
Notes
13.WE\ must be HIGH during SRAM read cycles.
14. Device is continuously selected with CE\, OE\ LOW.
15.Measured 200 mV from steady state output voltage.
16. If WE\ is LOW when CE\ goes LOW, the outputs remain in the high impedance state.
17. HSB\ must remain HIGH during read and write cycles.
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
AS8nvLC512K32
Rev. 0.0 08/09
9
AUSTIN [ AUSTIN SEMICONDUCTOR ]
