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AD6620
–6–
REV. A
TIMING CHARACTERISTICS (C
LOAD = 40 pF All Outputs)
Test
AD6620AS
Parameter (Conditions)
Temp
Level
Min
Typ
Max
Unit
MICROPROCESSOR PORT, MODE = 0
MODE0 Input Timing Requirements:
tSC
Control
1 to CLK Setup Time
Full
IV
3.0
ns
tHC
Control1 to CLK Hold Time
Full
IV
5.0
ns
tHA
Address
2 to CLK Hold Time
Full
IV
3.0
ns
tZR
CS to Data Enabled Time
Full
IV
5.0
ns
tZD
CS to Data Disabled Time
Full
IV
5.0
ns
tSAM
CS to Address/Data Setup Time
Full
IV
0.0
ns
MODE0 Read Switching Characteristics:
tDD
CLK to Data Valid Time
Full
I
10.0
15.0
30.0
ns
tRDY
RD to RDY Time
Full
IV
4.0
19.5
ns
MODE0 Write Timing Requirements:
tSC
Control
1 to CLK Setup Time
Full
IV
3.0
ns
tHC
Control
1 to CLK Hold Time
Full
IV
5.0
ns
tHM
Micro Data
3 to CLK Hold Time
Full
IV
3.0
ns
tHA
Address
2 to CLK Hold Time
Full
IV
3.0
ns
tSAM
Address/Data Setup Time to
CS
Full
IV
0.0
ns
MODE0 Write Switching Characteristics:
tRDY
RD to RDY Time
Full
IV
4.0
19.5
ns
MICROPROCESSOR PORT, MODE = 1
MODE1 Input Timing Requirements:
tSC
Control
1 to CLK Setup Time
Full
IV
3.0
ns
tHC
Control
1 to CLK Hold Time
Full
IV
5.0
ns
tHA
Address2 to CLK Hold Time
Full
IV
3.0
ns
tZR
CS to Data Enabled Time
Full
IV
5.0
ns
tZD
CS to Data Disabled Time
Full
IV
5.0
ns
tSAM
Address/Data Setup Time to
CS
Full
IV
0.0
ns
MODE1 Read Switching Characteristics:
tDD
CLK to Data Valid Time
Full
I
10.0
30.0
ns
tDTACK
CLK to DTACK Time
Full
V
5.5
15.5
ns
MODE1 Write Timing Requirements:
tSC
Control
1 to CLK Setup Time
Full
IV
0.0
ns
tHC
Control
1 to CLK Hold Time
Full
IV
5.0
ns
tHM
Micro Data
3 to CLK Hold Time
Full
IV
6.5
ns
tHA
Address
2 to CLK Hold Time
Full
IV
3.0
ns
tSAM
Address/Data Setup Time to
CS
Full
IV
0.0
ns
MODE1 Write Switching Characteristic:
tDTACK
CLK to DTACK Time
Full
V
5.5
15.5
ns
NOTES
1Specification pertains to: R/W (
WR), DS (RD), CS.
2Specification pertains to: A[2:0].
3Specification pertains to: D[7:0].
Specifications subject to change without notice.