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:
t
SC
Control
1
to CLK Setup Time Full IV 3.0 ns
t
HC
Control
1
to CLK Hold Time Full IV 5.0 ns
t
HA
Address
2
to CLK Hold Time Full IV 3.0 ns
t
ZR
CS to Data Enabled Time Full IV 5.0 ns
t
ZD
CS to Data Disabled Time Full IV 5.0 ns
t
SAM
CS to Address/Data Setup Time Full IV 0.0 ns
MODE0 Read Switching Characteristics:
t
DD
CLK to Data Valid Time Full I 10.0 15.0 30.0 ns
t
RDY
RD to RDY Time Full IV 4.0 19.5 ns
MODE0 Write Timing Requirements:
t
SC
Control
1
to CLK Setup Time Full IV 3.0 ns
t
HC
Control
1
to CLK Hold Time Full IV 5.0 ns
t
HM
Micro Data
3
to CLK Hold Time Full IV 3.0 ns
t
HA
Address
2
to CLK Hold Time Full IV 3.0 ns
t
SAM
Address/Data Setup Time to CS Full IV 0.0 ns
MODE0 Write Switching Characteristics:
t
RDY
RD to RDY Time Full IV 4.0 19.5 ns
MICROPROCESSOR PORT, MODE = 1
MODE1 Input Timing Requirements:
t
SC
Control
1
to CLK Setup Time Full IV 3.0 ns
t
HC
Control
1
to CLK Hold Time Full IV 5.0 ns
t
HA
Address
2
to CLK Hold Time Full IV 3.0 ns
t
ZR
CS to Data Enabled Time Full IV 5.0 ns
t
ZD
CS to Data Disabled Time Full IV 5.0 ns
t
SAM
Address/Data Setup Time to CS Full IV 0.0 ns
MODE1 Read Switching Characteristics:
t
DD
CLK to Data Valid Time Full I 10.0 30.0 ns
t
DTACK
CLK to DTACK Time Full V 5.5 15.5 ns
MODE1 Write Timing Requirements:
t
SC
Control
1
to CLK Setup Time Full IV 0.0 ns
t
HC
Control
1
to CLK Hold Time Full IV 5.0 ns
t
HM
Micro Data
3
to CLK Hold Time Full IV 6.5 ns
t
HA
Address
2
to CLK Hold Time Full IV 3.0 ns
t
SAM
Address/Data Setup Time to CS Full IV 0.0 ns
MODE1 Write Switching Characteristic:
t
DTACK
CLK to DTACK Time Full V 5.5 15.5 ns
NOTES
1
Specification pertains to: R/W (WR), DS (RD), CS.
2
Specification pertains to: A[2:0].
3
Specification pertains to: D[7:0].
Specifications subject to change without notice.
