21
COMMERCIAL TEMPERATURE RANGE
IDT72V70200 3.3V TIME SLOT INTERCHANGE
DIGITAL SWITCH 512 x 5
12
DS
5711 drw15
ADDRESS
tCSS
tDSH
tASW
tCSH
tDDR
tADS
tADH
AD0-AD7
D8-D15
WR
CS
DTA
DATA
ADDRESS
DATA
tRWS
tDWS
tSWD
tDHW
tAKD
AD0-AD7
D8-D15
RD
R/W
AS
tRWH
tDHR
tAKH
AC ELECTRICAL CHARACTERISTICS - MULTIPLEXED BUS TIMING (MOTOROLA)
Figure 12. Multiplexed Bus Timing (Motorola Mode)
Symbol Parameter Min. Typ. Max. Units Test Conditions
t
ASW ALE Pulse Width 20 ns
t
ADS Address Setup from AS falling 3 ns
t
ADH Address Hold from AS falling 3 ns
t
DDR Data Setup from DTA LOW on Read 5 ns CL = 150pF
t
CSH CS Hold after DS falling 0 ns
t
CSS CS Setup from DS rising 0 ns
t
DHW Data Hold after Write 5 ns
t
DWS Data Setup from DS – Write (Fast Write) 20 ns
t
SWD Valid Data Delay on Write (Slow Write) 122 ns
t
RWS R/W Setup from DS Rising 60 ns
t
RWH R/W Hold from DS Rising 5 ns
t
DHR
(1)
Data Hold after Read 10 20 ns CL = 150pF, RL = 1K
t
DSH DS Delay after AS falling 10 ns
t
AKD Acknowledgment Delay:
Reading/Writing Registers 43/43 ns C
L = 150pF
Reading/Writing Memory 760/750 ns C
L = 150pF
t
AKH
(1)
Acknowledgment Hold Time 22 ns CL = 150pF, RL = 1K
NOTE:
1. High Impedance is measured by pulling to the appropriate rail with R
L
, with timing corrected to cancel time taken to discharge C
L
.
